JP4860812B2 - Quick lime filling method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a method for filling quick lime, and more particularly, to a method for filling quick lime silo from a lorry vehicle while protecting quick lime with high activity used for the treatment of septic organic substances from the influence of moisture and carbon dioxide in the outside air.
[0002]
[Prior art]
  Quicklime is a chemical substance called calcium oxide, and is industrially manufactured by baking limestone (main component is calcium carbonate) at a high temperature. Usually, what is commonly called lime includes quick lime (calcium oxide) and slaked lime (calcium hydroxide), and the latter is produced by hydrating quick lime. Since quick lime reacts with water to generate reaction heat, there are times when it has been designated as a hazardous material, and when lime is used as a simple alkali raw material, it is often used in the form of slaked lime with little danger. In general, quick lime in circulation is supplied in a lorry vehicle, or is often in a paper bag that exudes a weight that can be handled manually, such as approximately 20 kg or 25 kg, and a 500 g wide mouth for physics and chemistry laboratories. Packed in a container.
[0003]
  Usually, the quick lime which is circulated by being called quick lime often has a hydration reaction partially (particularly on the surface) in a considerable part. However, when water and quicklime are mixed, a severe exothermic phenomenon is observed with a delay of about 20 to 30 minutes, and it can be confirmed sensuously that it is quicklime. Also, neutralization titration with an acidic solution can easily grasp that it is not calcium hydroxide but calcium oxide.
[0004]
  By the way, as proposed in Japanese Patent Publication No. 61-21720 “Waste Treatment Method and Apparatus”, Japanese Patent Application Laid-Open No. 7-2589, or Japanese Patent Application Laid-Open No. 10-137791, etc. It has been proposed that when organic substances are mixed under appropriate conditions, these septic organic substances can be rapidly sterilized and decomposed to prevent rot and to be converted into high-quality soil improvement materials. Highly active quicklime used for such purposes is usually difficult to obtain in the form of quicklime that is usually stored in a paper bag and is commercially available. For this reason, it is properly managed from the factory that produces quicklime, for example, transported in a sealed lorry vehicle, accommodated in a closed quicklime silo in the consumption area, and the process from the first stage of firing to the consumption area is appropriate. It is often used by maintaining the state of quick lime with high activity.
[0005]
  Factors that decrease the activity of quick lime with high activity are water and carbon dioxide in many cases. The former reacts with quicklime to produce slaked lime, and the latter produces calcium carbonate. Since water and carbon dioxide are contained in the air, it can be said that the active activity of quicklime is likely to decrease in a universal environment. From knowledge such as high-vacuum technology, it is pointed out that even materials such as rubber and plastic permeate molecules such as oxygen, carbon dioxide, and water, although they are in very small amounts. It is said that it is extremely difficult to cut off. For example, even if it is a rubber packing used for a connection part of a pipe or a rubber O-ring used for a sliding part of a valve, caution is required for use in a high vacuum facility.
[0006]
  FIG. 3 is a diagram schematically showing a quick lime filling operation from a conventional lorry vehicle that transports quick lime to a quick lime silo installed on the ground. The lorry vehicle 1 is provided with a tank 2 containing quick lime. The tank 2 normally contains about 10 tons of quick lime, and is installed in the lime silo 4 installed on the ground and mounted in the lorry vehicle 1 on an air compressor (not shown). Compressed air from the tank causes quick lime to be pumped from the tank 2 through the filling line 3 by the air and filled into the quick lime silo 4 (arrows indicate the flow of air). In the mixed flow of quicklime and air lifted to the quicklime silo 4 by compressed air, the quicklime particles are gravity-separated in the quicklime silo 4, and the fine quicklime particles scattered in the air are placed on the upper portion of the quicklime silo 4. The air is separated by the provided filter 5 to become clear air, and the clear air is discharged to the outside through the exhaust pipe 6.
[0007]
  Furthermore, the sampling port 7 provided in the middle of the quicklime silo 4 is for extracting quicklime provided to check the quality of the supplied quicklime, and is normally closed with a lid. The quicklime 18 filled in the quicklime silo 4 is taken out by opening and closing the discharge valve 9 provided in the lower part in use. In FIG. 3, 8 is a support of quicklime silo 4,2 isThese are shut-off valves that open and close the filling line 3 and the exhaust line 6, respectively. During the storage of quicklime, the shutoff valves 21 and 22 and the discharge valve 9 are closed to maintain the airtightness of the quicklime silo 4. However, since this type of quicklime silo is large, various types such as a filling line 3, an exhaust line 6, a shutoff valve 21, a shutoff valve 22, a discharge valve 9, a sampling port 7, a filter 5, or an inspection port inside the silo, etc. There are a large number of connecting parts, and there is an inflow of moisture and carbon dioxide contained in the outside air from the rubber packing and sealing surfaces provided at the connecting parts, and the activity of quick lime in the quick lime silo 4 gradually decreases. Inevitable.
[0008]
  However, the moisture accompanying the outside air (air) used in large quantities when the quicklime is pumped from the lorry wheel 1 to the quicklime silo 4 by air is extremely large. For example, pressure feeding of quick lime from the lorry wheel 1 by air is usually related to the length of the filling pipe line 3 (total extension) and the height of the quick lime silo 4 (pressure feed height). Air of 1/60 to 1/300 weight of quicklime is required. That is, in order to transfer 10 tons of quick lime from the lorry 1 to the quick lime silo 4, 33 to 166 kg (about 25 to 130 cubic meters) of air for pumping is required. In particular, as shown in FIG. 3, a cylindrical silo tends to increase the amount of air because of its high height.
[0009]
  This amount of water depends on the conditions of the outside air, but in the rainy season in summer, which is a relatively bad condition in Japan's climate, the outside air temperature is 30 ° C and the relative humidity is 80% (about the water vapor pressure partial pressure of 25.5 mmHg). In order to transfer 10 tons of quick lime, about 670 to 3400 g of water is contained in the pressure air and supplied to quick lime, which is considerably higher than the moisture permeation from valves and connections. It turns out that it is a thing. The weight of quicklime hydrated by this amount of water is about 2 to 10 kg, which is only 0.02 to 0.1% of the total quicklime transport amount of 10 tons, Since the surface portion is hydrated intensively, it appears as a decrease in the activity of the whole quicklime particles, and the influence is spread to the whole.
[0010]
  Further, when transferring from the lorry vehicle 1 to the quicklime silo 4 by pneumatic feeding, not only is the moisture accompanying the outside air meteorological conditions, but generally, the pressurized air of the lorry vehicle 1 is mounted on the lorry vehicle 1. The air compressor (not shown) is used after boosting the outside air. As a result, the motive power for driving the air compressor results in an internal combustion engine (generally, the main power source of the lorry vehicle 1). Is a diesel engine or gasoline engine), and an exhaust gas containing a large amount of water and carbon dioxide gas is scattered around the lorry 1 from a power source using hydrocarbon compounds as fuel. Depending on the wind direction, this exhaust gas may be It will drift to the air inlet of the air compressor, and there may be a situation where a large amount of outside air containing a large amount of moisture and carbon dioxide gas is sucked in and used to pump quicklime. That.
[0011]
[Problems to be solved by the invention]
  The quicklime which is the object of the present invention is used for the purpose of decomposing organic matter in a short time by mixing with septic organic matter as described in the above publication, and in a short time of about 10 to 20 seconds when mixed with water. Most of the hydration reaction is completed, and heat of hydration is released in a short time. Applications requiring such highly active quicklime are extremely limited, such as the treatment of septic organic matter such as livestock manure, surplus sludge from the activated sludge process, and septic residues from food factories. However, it is extremely limited when viewed from the whole types of quicklime use, but the occurrence of spoilage organic matter such as livestock manure, wastewater treatment sludge, and septic residues in food factories is extremely universal. Since the area is not limited, a method capable of stably supplying quick lime with high activity has been demanded.
[0012]
  To describe the nature of quick lime with high activity used for this kind of application, if quick calcined lime that has just been baked and water are mixed, the hydration reaction proceeds rapidly and takes about 10 to 20 seconds. The amount of heat corresponding to the heat of hydration reaction of the quicklime is released in a short time. On the other hand, if this quicklime is left in the room only for about 1 to 2 hours, the activity for hydration reaction is lost, and it takes 15 to 30 minutes to completely release the heat of hydration even when mixed with water. Requires a long time and is not suitable as a reactant for the treatment of septic waste. However, even if quick lime with reduced activity to the hydration reaction is analyzed chemically, 99% or more of calcium maintains the form of calcium oxide.
[0013]
  This is because the calcium hydroxide layer is formed on the surface of quicklime particles by a hydration reaction, and this calcium hydroxide layer acts as a barrier even when it comes into contact with water, hindering the hydration reaction of quicklime inside the particles. It is believed that In JP-A-10-137791, the calcium hydroxide layer is removed with an acid to increase the activity of quick lime to promote the decomposition reaction of the decaying organic matter, but the amount is small. It has been pointed out that the thin hydration layer (calcium hydroxide layer) formed on the surface of the quicklime particles has a very bad influence on the hydration reaction of quicklime used for the treatment of the spoilage organic matter.
[0014]
  Carbon dioxide contained in the air also produces calcium carbonate in the same way as moisture, causing a reduction in the activity of quick lime hydration. However, in natural air, the concentration of carbon dioxide is about 0.04%. It is thought that the effect is smaller than moisture. However, in the case of special ones such as engine combustion exhaust gas, the carbon dioxide concentration is extremely high, and the water vapor pressure is regulated by the temperature of the outside air, whereas the carbon dioxide concentration can be extremely high. In places where engine exhaust gas affects, it can be said that it is a substance that needs attention as well as moisture.
[0015]
  For this reason, the present invention can stably supply quick lime with high activity to be used for the treatment of septic organic matter.When transferring from a lorry car to a silo, quick lime is compressed by air, such as moisture and carbon dioxide. It is a filling method of quicklime for suppressing the absorption of ingredients and maintaining a high activity state. The present invention proposes a highly reliable quick lime filling method that does not depend on the weather so as to decrease the activity of quick lime, for example, in the rainy season or rainy summer, depending on the conditions of the outside air as in the past.
[0016]
[Means for Solving the Problems]
  The present invention achieves the above-mentioned problem, and the present invention is to transfer the quick lime from a lorry vehicle containing quick lime to a quick lime silo placed on the ground by pneumatic feeding. Introduced into the air inlet of an air compressor that generates compressed air through a circulation lineIn addition, the circulation pipe is made of a deformable material, and includes an air chamber that is blocked from outside air, and the air chamber expands or contracts in accordance with pressure fluctuations of the circulation pipe, and takes air in and out.Circulating and using air pumped quick lime from the lorryThen, the quicklime silo is filled into the quicklime silo.This is a method of filling quicklime.
[0017]
  According to the present invention, the circulation pipe is made of a deformable material, is provided with an air chamber that is blocked from outside air, and the air chamber expands or contracts in response to pressure fluctuations in the circulation pipe so that air can be taken in and out. BecauseWhen transferring quicklime from a lorry car to a quicklime silo, B-The amount of air equivalent to the increase in the internal pressure of the tank or quicklime silo that holds quicklime in the truck is temporarily compensated by the contraction of this air chamber, and the pressure air released after the quicklime is pumped is again expanded by the expansion of the air chamber. By absorbing, quick lime filling work can be performed with air that is almost completely cut off from the outside air.
[0018]
  And a space connected to the air chamber connected to this circulation pipeAlsoAlternatively, filling the air chamber with a small amount of quicklime as an absorbent removes the moisture and carbon dioxide from the air in the air chamber in advance, and reduces the activity of quicklime when filling quicklime from a lorry vehicle to a silo. The filling operation can be performed with suppression.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, an embodiment of a quicklime filling method according to the present invention will be described with reference to the drawings. First, a filling method that circulates and uses air used for quicklime pumping when quicklime is filled from a lorry vehicle into a quicklime silo, which is a premise of the present invention, will be described with reference to FIG.
[0020]
Figure1 isOne aspect of the method of filling quicklime in a quicklime silo using circulating air that is pumped with quicklime from a lorry vehicleIt is a schematic diagram which shows. FIG. 1 schematically shows a state in which quick lime accommodated in a tank 2 of a lorry vehicle 1 is pumped by air into a quick lime silo 4 installed on the ground, and is filled in FIG. Portions common to those shown as conventional examples are given the same reference numerals.
[0021]
  In FIG. 1, the exhaust pipe 6 of the quicklime silo 4 is extended by an extension pipe 10 to the vicinity of the position where the lorry vehicle 1 stops when quicklime is transferred, and the quicklime silo exhaust is mounted on the lorry vehicle 1 on the vehicle. The hose connection to the air suction port of an air compressor (not shown) for pressure feeding is facilitated. Here, the exhaust line 6 and the extension line 10 form a part of the exhaust circulation line of the quicklime silo 4, but in FIG. 1, the outside air and the air in the circulation line are placed at positions that are easy to operate from the ground. A pressure equalizing valve 23 that communicates is provided.
[0022]
  Here, when the quicklime stored in the tank 2 of the lorry vehicle 1 is transferred to the quicklime silo 4 installed on the ground, the filling pipe line 3 is connected to a predetermined pipe of the lorry vehicle 1 and the exhaust of the silo is circulated. Is connected to an air suction port of an air compressor (not shown) of the tank car 1, and the pressure equalizing valve 23 is opened to communicate the circulation line with outside air, and then the air compressor is operated. Then, the quick lime in the tank 2 is pneumatically fed by this compressed air. In the mixed flow of quicklime and air guided to the quicklime silo 4, quicklime particles fall and settle at the bottom of the quicklime silo, and the airflow containing fine powder quicklime particles is further clarified by removing the quicklime particles by the filter 5. The air reaches the exhaust pipe 6, and is further circulated by the extension pipe 10 to the air suction port of the air compressor of the lorry vehicle 1.
[0023]
  Here, since the pressure equalizing valve 23 is opened, when the circulation line has a large negative pressure with respect to the outside air, the outside air flows into the circulation line, but the air passing through the filter 5 circulates. Because it is used again for quicklime pumping, the inflow of outside air is small. That is, when the quick lime is pumped, the amount of air held by the space formed by the tank 2, the quick lime silo 4, the filling pipe 3 and the circulation pipe is stopped due to the pumping pressure and the filtration resistance of the filter. A pressure equalizing valve whose outside air corresponding to the increase is an opening.23It will be taken in from. However, when the filling operation is completed, air corresponding to the temporarily increased amount of air is released to the outside from the pressure equalizing valve 23 opened to the outside air, and the internal pressure of the tank 2 and the quicklime silo 4 is the same as the outside air. It becomes even. And after filling operation is complete | finished, the cutoff valves 21 and 22 and the pressure equalizing valve 23 are interrupted | blocked, and the quicklime in the quicklime silo 4 will be in the sealed state.
[0024]
  Here, even if the pressure equalizing valve 23 is not provided or the pressure equalizing valve 23 is not opened, quick lime pneumatic feeding is possible, but the pressure of the air flowing into the suction port of the air compressor decreases, and the degree thereof is large. Since the performance of the air compressor cannot be sufficiently exhibited, it may be necessary to provide an air compressor having a higher compression ratio. Furthermore, the downstream part of the filter 5 is greatly decompressed, and there may be a negative pressure larger than that of the outside air. Normally, this type of air compressor is often designed with the suction pressure set to atmospheric pressure, so it is more desirable to make the suction pressure as close to atmospheric pressure as possible, and silos and piping must be sealed. It is not preferable that a large force in the opposite direction acts on the member that must be operated, that is, an excessive negative pressure (external pressure) and an internal pressure after completion of the filling operation.
[0025]
  Thus, when transferring quicklime from the lorry vehicle 1 to the quicklime silo 4 installed on the ground by air pressure, the outside air introduced into the quicklime being pumped by circulating the exhaust of the quicklime silo 4 as pressurized air is drastically reduced. And the fall of the activity of quicklime by the water | moisture content contained in external air or a carbon dioxide gas can also be suppressed. further,If an opening is provided so that the outside air can communicate with the outside air in the circulation line leading the quicklime silo exhaust to the suction port of the air compressor and the outside air can come and go into the circulation line according to the pressure state in the circulation line, Excessive negative pressure at the suction port of the air compressor can be prevented, and the excessive negative pressure does not act on the space from the downstream of the quicklime silo filter to the intake port, so that quicklime pressure feeding operation (filling operation) Can be selected in the same amount of time as before, and the air compressor has the advantage that the model can be selected in the same way as in the past. Although there is an inflow of outside air corresponding to fluctuations in the amount of air, the amount of inflow is reduced compared to the conventional case where the entire amount of compressed air is taken from outside air and quicklime is transferred. Can do this Because, it is possible to suppress a decrease in the activity of quicklime by the outside air moisture and carbon dioxide. Since this opening part may be provided in piping by the quick lime silo side, and may be provided in the suction inlet part of the air compressor by the side of a lorry vehicle, it can respond easily.
[0026]
Figure2 is a method for filling quicklime according to the present invention.oneShow embodimentSUMIIt is a schematic diagram, and proposes a method of almost suppressing the intrusion of outside air during a quick lime filling operation, and aims to suppress an excessive negative pressure from acting on the air compressor.
[0027]
  In FIG. 2, an air chamber 13 in which outside air is blocked by a deformable material such as vinyl or rubber is formed in a circulation pipe, and connected to the tank 2, quicklime silo 4, and filling pipe 3 by a series of quicklime filling operations. In addition, the amount of air that is contained in a closed space consisting of a circulation line, etc. increases at the time of pumping, and increases when it returns to the original state after increasing and decreasing when it returns to the state before starting pumping again. The air chamber 13 is supplemented by deformation (shrinkage) of the air chamber 13, and after the filling operation is completed, the air chamber 13 is returned to its original volume, so that the filling operation of quick lime is performed substantially without using any outside air. .
[0028]
  In FIG. 2, an air chamber 13 made of a vinyl sheet is provided in a circulation pipe line by a pipe 12 through a communication valve 24. The air chamber 13 is one that can seal off the outside air as a bag by fusing agricultural vinyl with a heat sealer, and has an opening at one end of the pipe 12 to communicate with the circulation line. If the shape of the air chamber 13 at the start of the filling operation is indicated by a solid line 13, the air chamber 13 gradually deforms and contracts as shown by the broken line 14 during the filling operation, and the tank 2, the quicklime silo 4, and the filling pipe 3 In addition, the air amount corresponding to the increased amount of air in the total space in the circulation pipe is supplemented by the air from the air chamber 13 (14) that is blocked from the outside air.
[0029]
  The air chamber 13 is a film of agricultural vinyl or thin rubber and can be easily deformed according to the pressure state of the circulation pipe. However, it is easily damaged by wind or dust when exposed to the outside air. In No. 2, an external force such as strong wind or rain is prevented from acting directly by an outer covering 11 such as an agricultural greenhouse. Here, the outer cover 11 does not need to be airtight with respect to the surrounding air, but only to prevent the action from directly affecting the film of the air chamber 13 in the case of a typhoon or snowfall. Good.
[0030]
  Further, in FIG. 2, a quick lime bag 16 made of a material such as vinyl or rubber capable of shutting off from the outside air is connected to the pipe 12 connecting the air chamber 13 and the circulation pipe through the valve 25 in the same manner as the air chamber 13. The quicklime bag 16 contains quicklime 17. For this reason, the water | moisture content of the air in the air chamber 13 and a carbon dioxide gas are quick lime in the quicklime bag 16 by opening the valve 25 at the time before filling operation.17When the quick lime is transferred from the lorry vehicle 1 to the quick lime silo 4, the moisture and carbon dioxide in the air chamber 13 are removed in advance, so that the air used for pumping the quick lime is extremely clean. Thus, a decrease in the activity of quicklime can be greatly suppressed by moisture and carbon dioxide in the filling operation.
[0031]
  In FIG. 2, the fan 15 is connected to the pipe 12 via the valve 26 so that the air volume of the air chamber 13 can be added when the volume of air in the air chamber 13 is significantly reduced due to temperature fluctuations due to the season. It is. In addition, with respect to the expansion of the air chamber 13 due to this seasonal variation, the excessive expansion of the air chamber 13 can be suppressed in a short time by opening the shutoff valve 22 and the communication valve 24 at the end of the extension pipe 10. it can. Since the expansion and contraction of the air in the air chamber 13 is not so large, a small fan or a foot-operated basket is sufficient as the fan 15. It is not necessary to install a large electric motor due to the installation of the chamber 13, and even an electric type may have a very small power capacity.
[0032]
  Thus, when the air in the air chamber 13 is previously purified with quick lime, the quick lime filling amount of the quick lime bag 16 is a change in the amount of air held in the silo or tank depending on the capacity of the quick lime silo 4 or the distance of pneumatic feeding. (The difference in volume between expansion and contraction of the air chamber) is different, but it may be accommodated in the quicklime bag 16 at a ratio of about 70 g to 1 cubic m of air in the air chamber 13. In addition, since the air once stored in the air chamber 13 does not exchange with the outside air in a large amount in this way, the inflow of moisture and carbon dioxide gas is permeated through a film of vinyl or rubber, or from the connection portion or This is when the outside air is taken in by the fan 15, and once the moisture and carbon dioxide in the air in the air chamber 13 are removed with quicklime, a large amount of moisture and carbon dioxide does not enter thereafter.
[0033]
  Usually, when quicklime is filled into the quicklime silo from the lorry vehicle, sampling is performed for the quicklime inspection. Therefore, the remaining quicklime can be rationally used by supplementing the quicklime bag 16 with the remaining amount. Moreover, even if quick lime which the hydration reaction of the particle | grain surface currently accommodated in a wide-mouthed bottle is marketed as quick lime can be utilized as this absorber. And the valve 25 which connects the quicklime bag 16 and the communicating pipe 12 is normally opened, and the lorry vehicle 1 is filled with quicklime by always absorbing the moisture and carbon dioxide of the air in the air chamber 13. When the product is delivered, the air in the air chamber 13 is purified and the quality of the quicklime is not lowered even if it is used as the pressure-feeding air through the circulation line.
[0034]
  Air chamber13Quick lime bags to purify the air16Quicklime stored in17This contributes to the removal of moisture and carbon dioxide in the air chamber 13 by utilizing not only the surface of the quicklime particles but also the whole. That is, the quick lime filling operation from the lorry vehicle to the quick lime silo is about once every two days to half a month depending on the consumption of quick lime. With the air in chamber 13Of quicklime bag 16If the quick lime 17 is communicated, moisture and carbon dioxide in the air will act on the quick lime for a long time, diffuse to the inside of the quick lime particles, react with the quick lime (calcium oxide) inside, and as an absorbent The stored quicklime can be used as an absorbent not only on the surface but also on the inside.
[0035]
【The invention's effect】
  As described above, the present invention has the following effects. In the quick lime filling method of the present invention, when transferring quick lime from a lorry vehicle to quick lime silos installed on the ground by compressed air, the air after pumped quick lime is circulated to the air inlet of the air compressor through a circulation line. Then, it is used again as quick-feeding air for quicklime, and it is circulated to make it difficult for outside air to flow into the pressure-feeding air, and the degree to which the activity of quicklime is reduced by moisture or carbon dioxide in the outside air is greatly reduced. In this way, since it can be transferred without reducing the activity of quicklime, for example, quicklime and waste such as livestock manure, raw garbage, surplus sludge from activated sludge treatment are mixed and spoilage in waste Highly reliable waste treatment when constructing a recycling-oriented social structure that is expected in the future, such as decomposing or sterilizing organic matter in a short period of time and converting it to soil improvement materials and returning it to fields and green spaces This method can be provided.
[0036]
  And the filling method of quicklime of this invention was comprised with the material which can deform | transform into a circulation pipe line.It is equipped with an air chamber that is shut off from outside air, and circulates and uses the air that is cut off from outside air to fill the quicklime of the lorry vehicle.BecauseThere is an advantage that quick lime of a lorry vehicle can be filled into quick lime silo without applying excessive negative pressure to the air compressor and without external air flowing into the compressed air.
[0037]
  AlsoIf a small amount of quicklime is stored directly in the air chamber or at a position communicating with the air in the air chamber, moisture and carbon dioxide in the air chamber can be removed by quicklime in advance. Even if indoor air is used for compressed air through a circulation line, quick lime can be transferred from a lorry vehicle to a quick lime silo without being affected by moisture or carbon dioxide gas.
[0038]
  According to the quick lime filling method of the present invention, there is no need to load a heavy compressed air heavy air dehumidifier on a quick lime lorry vehicle, and excessive power is required for the quick lime transfer operation to be completed in a short time. Is effective, and it can suppress the fall of the activity of quicklime by an inexpensive method.
[0039]
  Furthermore, according to the quick lime filling method of the present invention, since the air used for pumping is circulated and used, it is hardly affected even when the humidity of the outside air is high, and the exhaust gas of the engine of the lorry vehicle is surrounded by the surroundings. Even if it drifts, it is hard to be affected by it, and it can be transferred from a lorry car to a quicklime silo installed on the ground by suppressing the decrease in the activity of quicklime, so it can be filled with livestock manure and excess sludge. It is an excellent handling of quick lime used for the treatment of septic organic matter, and can be used greatly in order to realize a solid treatment method.
[Brief description of the drawings]
[Figure 1]Circulating air used for quicklime pumpingOf quicklime filling methodoneIt is a schematic diagram which shows an aspect.
FIG. 2 shows a method for filling quicklime according to the present invention.One embodimentIt is a schematic diagram which shows.
FIG. 3 is a schematic view showing an embodiment of a conventional quick lime filling method.
[Explanation of symbols]
  1 Raleigh car
  2 tanks
  3 Filling pipeline
  4 Quicklime silo
  5 Filter
  6 Exhaust pipe
  7 Inspection port
  8 props
  9 Discharge valve
  10 Extension pipeline
  11 greenhouse
  12 Piping
  13 Air chamber
  14 Air chamber (when contracted)
  15 fans
  16 Quicklime bag
  17 Quicklime
  18 Quicklime
  21 Shut-off valve
  22 Shut-off valve
  23 Pressure equalizing valve
  24 communication valve
  25 valves
  26 Valve

Claims (2)

When transferring the quick lime from a lorry vehicle containing quick lime to a quick lime silo placed on the ground by pneumatic feeding, the exhaust of the quick lime silo is introduced into an air intake port of an air compressor that generates compressed air by a circulation line. In addition, the circulation pipe is made of a deformable material, and includes an air chamber that is blocked from outside air. The air chamber expands or contracts in response to pressure fluctuations in the circulation pipe, and air is taken in and out. A method for filling quick lime, in which quick lime from a lorry vehicle is circulated and used to fill the quick lime silo with the quick lime of the lorry vehicle. The air chamber may properly the quicklime method of filling according to claim 1, wherein accommodating the quicklime in the space leading to the air chamber.

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