JPH0550649B2 - - Google Patents

Description

Detailed Description of the Invention "Field of Industrial Application" The present invention is applicable to heavy oil, edible oil soapstock, shochu lees, soybean dregs,
This relates to a pipe-opening co-combustion burner for cleaning waste oil, waste mud from fish or animal processing plants, waste, etc.

"Prior Art" Conventionally, an incinerator has been used to burn waste combustible materials, low quality oil (C heavy oil), etc., and the materials have been fed into the incinerator. However, factories use a high percentage of burner-fired boilers, and there is a strong desire to save energy by burning the high-calorie waste they generate. In order to implement this intention, various types of crushers have appeared (for example, the applicant's U.S. Pat.
No. 20244, etc.). However, since the particle size of the crushed material is large, feeding the crushed material to the nozzle causes clogging of the burner nozzle and poor combustion. In these mixed combustion experiments, there was a strong tendency for the diameter of the fuel particles injected from the injection nozzle to become large, and the color of the flame and combustion condition deteriorated, making it impossible to obtain a stable combustion condition.

``Problems to be Solved by the Invention'' The present invention provides a crushed co-combustion burner that can maintain a stable combustion state by crushing fuel containing crushed materials with relatively large particle sizes into fine particles at the nozzle part and spraying the mixture. That's what you're trying to get.

"Means for Solving the Problems" The present invention has a rotating shaft fixed in the sliding direction inside the nozzle, a rotary crushing blade at the tip of the rotating shaft, and a rotary crushing blade at the rear of the blade. A brush is provided, and the rear end of the nozzle is closed with a partition wall, a fuel pressure pipe and a compressed air pipe are opened in the partition wall, an outer cylinder is provided on the outer periphery of the nozzle with an air supply gap, and the tip of the nozzle is It is constituted by a crushing co-combustion burner in which the tip of the outer cylinder is opened at the outer periphery of the opening, and the nozzle is formed so as to be adjustable in the sliding direction.

``Action'' Therefore, the rotating shaft 2 is rotated at high speed and the above-mentioned crushing blade 3
The rotating brush 4 is rotated at high speed inside the nozzle 1, and air is supplied from the gap 8 on the outer periphery of the nozzle 1 toward the tip opening 8'. In this state, when fuel containing crushed material is forced into the partition wall 5 through the combustion pressure feed pipe 6 and compressed air is sent into the partition wall 5 through the compressed air pipe 7, the air pressure inside the nozzle 1 increases and the tip of the nozzle 1 The fuel injection pressure from the opening 1' is increased. Further, when the fuel containing crushed substances passes between the high speed rotating brush 4 and the inner surface of the nozzle 1, it is cut by the high speed rotating needles of the same brush 4 and further crushed into fine particles. And rotary crushing blade 3 and nozzle 1
The fine particles are crushed again by the same blade 3 as they pass through the inner surface of the nozzle 1, and in this state, the fine particles are evenly jetted out in the form of mist from the tip opening 1' of the nozzle 1 due to the jetting pressure of the compressed air. Moreover, it mixes with the air supplied from the gap 8 and can be ignited and combusted in that state. The gap t between the inner surface of the nozzle 1 and the rotary crushing blade 3 is adjusted by sliding the nozzle 1 back and forth, thereby preventing clogging due to the fine particles.

“Example” Inner cylinder 1 is inserted into outer cylinder 9 through air supply gap 8.
0 from the rear end plate 11 of the outer tube 9 to the inner tube 10.
protrudes rearward and closes the protruding end with a closing plate 12.
An air motor 13 is provided on the closing plate 12 , and the output rotating shaft 2 of the motor 13 is extended into the inner cylinder 10 and supported by a bearing 15 at the center of the end closing partition 5 of the inner cylinder 10 . It extends from to the front of the tip opening 1' of the nozzle 1 and is fixed in the sliding direction.
The nozzle 1 is screwed into an inner conical male screw base 1'' provided on the partition wall 5, and its position in the sliding direction can be adjusted slightly by rotating it forward and backward. The inner diameter is gradually reduced at the tip as shown in FIG. 1, and a rotary crushing blade 3 is provided on the rotary shaft 2 through a nozzle gap t at the tip, and a rotary brush 4 in contact with the conical inner surface is provided at the rear of the rotary crushing blade 3. 4,4
A nozzle 1 is formed which is extendable and retractable in the sliding direction together with the male threaded base 1''.The outer cylinder 9 extends from the partition wall 5 to the outer periphery of the tip opening 1' of the nozzle 1, and has a The air supply gap 8 is opened 8'.In the inner cylinder 10, the output rotating shaft 2 is covered with a sleeve tube 14.
The space between the inner cylinder 10 and the inner cylinder 10 is filled with cooling water. A fuel pressure feeding pipe 6 and a compressed air pipe 7 are installed in the inner cylinder 10, and their tips are opened 6', 7' on the inner surface of the partition wall 5 on the nozzle 1 side. In the figure, numeral 16 indicates a pressure air supply pipe of the air motor 13, and numeral 17 indicates an exhaust pipe of the motor 13, which discharges the air from the mirror plate 11 into the gap 8. 18 is an air supply cylinder to the gap 8;
9 is a rotational speed regulator of the air motor 13, 20 is a bolt for fixing the bulkhead 5, 21 is a threaded nozzle set screw, 22 is a mixed combustion fuel pump containing crushed materials, and 23 is a fuel tank containing crushed materials, low quality oil, water, etc. A mixture of fuels is used. Further, 24 is a cooling water inlet, and 25 is its outlet.

``Effects'' Since the present invention is constructed as described above, fuel containing crushed materials with relatively large particle sizes can be re-crushed in the nozzle portion and made sufficiently fine, thereby preventing clogging and reducing the compressed air pressure inside the nozzle. Therefore, a stable combustion state can be maintained by powerfully ejecting the fuel in the form of a mist.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view showing the crushing co-combustion burner of the present invention, FIG. 2 is a front view taken along line A-A in FIG. 1,
Figure 3 is a front view taken along line B-B in Figure 1, Figure 4 is a front view of the rotating brush taken along line C-C in Figure 1, and Figure 5 is a front view taken along line D-D in Figure 1. be. 1... Nozzle, 2... Rotating shaft, 3... Rotating crushing blade, 4... Rotating brush, 5... Partition wall, 6... Fuel pressure pipe, 7... Compressed air pipe, 6', 7', 8'...
Opening, 8...Air supply gap, 9...Outer cylinder, 1'
...Nozzle tip opening.

Claims (1)

[Claims] 1 A rotating shaft fixed in the sliding direction is provided inside the nozzle, and a rotating crushing blade is provided at the tip of the rotating shaft,
A rotating brush is installed at the rear of the blade, the rear end of the nozzle is closed with a partition, a fuel pressure pipe and a compressed air pipe are opened in the partition, and an outer cylinder is installed around the outer periphery of the nozzle through an air supply gap. A pipe-opening co-firing burner is provided, wherein the tip of the outer cylinder is opened on the outer periphery of the tip opening of the nozzle, and the nozzle is formed so as to be freely adjustable in a sliding direction.