JPS5910253B2 - gas treatment equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for performing various physical and chemical operations, and more particularly, it involves bringing gas into contact with granules to cause the granules to adsorb a certain component in the gas; Or, it relates to an apparatus for causing a chemical reaction by contact, and in particular, it relates to an apparatus structure that is effective for carrying out a continuous contact action.

Devices that adsorb certain components in gas to particles or react with particles include desulfurization devices that adsorb SO2 in flue gas to activated carbon, devices that adsorb hydrocarbons in tank vent gas, or devices that absorb NOx gas in flue gas. There are denitrification equipment, etc.

However, the function of the treated granules used is limited, and in order to prevent deterioration and to achieve stable and effective operation of the target equipment and this equipment itself, it is necessary to maintain a certain efficiency without stopping the contact action. Continuous operation is desirable and the material to be treated must be replaced continuously.

Conventional methods for discharging granular materials include electromagnetic vibration feeders, rotary feeders, dampers, table feeders, etc., and each has its advantages and disadvantages, but all of them are satisfactory in terms of the degree of granule destruction and quantitative discharge performance. There were many things I couldn't do.

In order to overcome the above-mentioned drawbacks, the present invention is equipped with a discharge mechanism that can uniformly take out the filling in the contact tank quantitatively and without damage, and even in a large contact tank without drifting and falling of the filling. The purpose is to provide a gas processing device.

That is, the present invention provides a gas treatment device that incorporates one or more gas treatment layers containing a gas treatment substance, including a container into which a gas to be treated is introduced and a gas to be treated is discharged, and a granular gas treatment layer in the container. providing one or more contact tanks each having a pair of gap plates and a bottom plate containing the gas treatment layer made of a substance;
A cutout is formed between the lower end of one of the pair of gap plates and the bottom plate, and the bottom plate has a slit extending in the depth direction and an opening extending in the width direction. A scraper capable of reciprocating in the depth direction is provided, a hopper-shaped lower chute is attached to the lower part of the bottom plate, and a discharge valve is provided at the lower end of the lower chute, so that the scraper overflows from the notch to the bottom plate. The treated material formed within the upper stabilization angle is scraped out by the scraper through the slit and the opening, received in the lower chute, and then discharged from the discharge valve to form a quantitative scraping section and discharge. This is a gas treatment device characterized by having separate parts.

The present invention will be explained below with reference to the accompanying drawings.

1 to 3 are front, side and plan views of an embodiment of a continuous moving bed contact device equipped with the processing device of the present invention,
FIG. 4 is a sectional view showing one embodiment of the granule scraping device according to the present invention, and FIGS. 5a and 5b are sectional views taken along line A-A in FIG. The figures are each equipped with scrapers of different shapes.

Inside the processing container 1, there are two parallel plates facing each other with a predetermined distance therebetween.
One or more rows of contact tanks 3 divided by a number of gap plates 2 are arranged vertically in parallel within the processing container.

In the embodiment, an example of a four-row contact tank was shown, but the number of rows is not particularly limited.

Gas enters the processing container 1 parallel to the gas passage cross section of the contact tank 3 as shown by the arrow in the figure, is divided uniformly according to the number of rows of the contact tank 3, and enters each contact tank 3 at right angles. The gases that have passed through merge and exit the processing container 1.

Now, in the processing container 1 of this type, the number of rows of contact tanks 3 and the height, depth, thickness, etc. of each contact tank are determined by the capacity and conditions of the processing container, that is, the superficial velocity and linear velocity of gas, or the pressure due to the processing material. It can be arbitrarily selected depending on various factors such as loss.

Further, as the gap plate 2, any material such as a wire mesh, a punching plate, or a louver can be used, and the opening of the wire mesh, the shape and size of the hole in the punching plate, or the length, pitch, and inclination of the louver can be adjusted. etc. can be arbitrarily selected depending on the type and size of the processing substance, the properties of the processing gas, the gas linear velocity, etc.

The upper part of the contact tank 3 communicates with the regenerator 7 via the charging valve 8, the lower part of the contact tank 3 is provided with a hopper-shaped lower chute 10, and the lower end of the lower chute 10 is equipped with a discharge valve 5 (e.g. (rotary valve, etc.) is installed.

The discharge valve 5 and the regeneration device 7 are connected by a transport device 6 to circulate the substance in the contact tank 3.

Next, the structure of the lower part of the contact tank 3 will be explained in detail with reference to FIGS. 4, 5a and 5b.

Two rows of contact tanks 3 and 3' are arranged in a set, and a bottom plate 9 is arranged to cover the bottoms of each tank.

The lower ends of the outer gap plates 2a and 2a' of the contact tanks 3 and 3' are in close contact with the bottom plate 9, and a gap is provided between the lower ends of the inner gap plates 2bt2b' and the bottom plate 9, and a notch 12 is formed in each of the contact tanks 3 and 3'. It is formed.

A slit 10a extending in the depth direction is formed in the bottom plate 9.

Further, a scraper 4 is arranged on the upper surface of the bottom plate 9 so as to be able to reciprocate in the depth direction.

It is smaller than the width S2 of the slit 10a.

An opening 11 is formed at the end of the bottom plate 9 in the depth direction.

A hopper-shaped lower chute 10 is attached to the lower part of the bottom plate 9, and the slot NOa and the opening 11 are connected to the lower chute 10.
Open to.

Next, the extraction of the processed material will be described.

As shown in FIG. 4, the generally granular treated material 13 in the contact tanks 3, 3' overflows from the notch 12 and maintains an angle of repose over the entire length in the depth direction on the bottom plate 9 disposed at the bottom of each contact tank 3. Form and stay.

The treated material 13 formed at the angle of repose is scraped off by reciprocating the scraper 4.

Note that after scraping off the treated material 13 corresponding to the angle of repose, a new angle of repose is immediately formed in the same shape as before due to the weight of the treated material itself.

The scraped processing material slides down the hopper-shaped part of the lower chute 10 at the bottom of the processing container, and passes through the discharge valve 5 (
For example, a rotary valve or a double tamper) is used to transport the treated material to a regeneration device 7 using a machine such as a combination of a conveyor and a packet elevator or a pneumatic transport device 6, where the treated material is steamed, sieved, etc. After performing a regeneration operation such as firing or chemical treatment, it is circulated and replenished into the processing vessel 1 via a charging valve 8 (for example, a rotary valve or a double damper).

Now, the reciprocating sliding movement of the scraper 4 can be carried out by a conventional method such as an electric type or a pneumatic type.

There is no particular problem with the installation position of the scraper 4 on either the gas inlet side or the outlet side of the contact tank; The gas outlet side of the contact tank is more advantageous in order to prevent overflow from the contact tank, that is, to enable smooth extraction and recirculation of the overflowing filler.

In addition, although there is no problem with the number of scrapers 4 being one per row of contact tanks, the contact tank 2 has advantages such as improving the balance of the scraping section and simplifying the discharge and charging equipment for the treated material.
A one per column approach is advantageous.

One embodiment of the scraper device according to the present invention will be described with reference to FIG. 4, and FIGS. 5a and 5b showing the A-A cross section of the figure. 1) Grains forming an angle of repose on the bottom plate 9. The scraper 4 reciprocates the physical substance 13 by sliding it on the bottom plate.
Scrape off a portion of width S2.

2) The scraped particles fall into the lower chute 10 through a slit 10a cut in the depth direction in the bottom plate.

3) At both ends of the bottom plate, openings 11 are formed relative to the chute 10 at the bottom as shown in FIG. It does not hinder the movement of 4.

4) 4 scrapers Any suitable shape can be used, such as the plate shape shown in FIG. 5a. For example, a triangular shape as shown in FIG. Furthermore, by providing a guide plate at the bottom of the scraper and sliding it using the slit 10a of the bottom plate as a guide, stable reciprocating movement is possible.

The apparatus of the present invention has been described in detail with reference to the drawings showing the embodiments thereof, and the following excellent effects can be expected.

1. This method scrapes the angle of repose of the grains formed over the entire length of the bottom of the contact tank in the depth direction, and the angle of repose of the new grains formed after scraping is instantaneous and the same regardless of the length in the depth direction. In other words, since the material to be treated falls uniformly from the contact tank in the entire depth direction, it is easy to increase the size of the device.

2. Since the above-described angle of repose formation has good repeatability, the amount of extraction can be quantitatively stabilized.

3. Since the scraper can be moved and stopped easily and arbitrarily, the scraper can be operated either intermittently or continuously by changing only the timer for extracting the particles.

4. The quantitative scraping part and the discharge part for the grains are separated, and the grains scraped from the quantitative scraping part are dropped into the hopper-shaped receiving means through a slit provided there. The granules do not adhere to the wall surface of the hopper-shaped part without a layer, and therefore the granules are uniformly discharged from the discharge part (without some of the granules remaining for a long time), and the granules are catalyzed by Facilitate playback of features.

In addition, since the discharge means is provided at the lower end of the hopper-shaped storage means, the quantitative scraping section is located inside the device, and when the granules are cut with this quantitative scraping section, the gas processed from this section is will not leak from the device to the outside world.

[Brief explanation of the drawing]

FIG. 1 is a front view of a continuous moving bed contact device equipped with the processing device of the present invention, FIG. 2 is a side view of the device shown in FIG. 1, FIG. 3 is a plan view of the device, and FIG. FIG.
Figures 5a and 5b are cross-sectional views taken along line A, each equipped with a scraper of a different shape. 1... Processing container, 2... Gap plate, 3.
...Contact tank, 4...Scraper, 5...
...Discharge valve, 6...Transport device, 7...
...Regeneration device, 8...Charging valve, 9...
Bottom plate, 10...Lower chute, 10a...
...Slit, 11...Opening, 12...
...notch, 13...substance.

Claims (1)

[Claims] 1. A gas treatment device that incorporates one or more gas treatment layers containing a gas treatment substance, including a container into which a gas to be treated is introduced and a gas to be treated is discharged, and a gas treatment layer containing a particulate gas treatment substance in the container. One or more contact tanks each having a pair of gap plates containing a gas treatment layer and a bottom plate are provided, and a notch is formed between the lower end of one of the pair of gap plates and the bottom plate,
A slit extending in the depth direction and an opening extending in the width direction are formed in the bottom plate, a scraper capable of reciprocating in the depth direction is disposed on the bottom plate, and a hopper-shaped lower chute is provided at the bottom of the bottom plate. is installed, and a discharge valve is provided at the lower end of the lower chute, so that the treated material overflowing from the cut arrow part and formed on the bottom plate within a safe angle is passed through the slit and the opening by the scraper. A gas processing device characterized in that the quantitative scraping part and the discharge part are separated so that the scraped gas is stored in the lower chute and then discharged from the discharge valve.