WO2019169787A1

WO2019169787A1 - Device for producing solid fuel by utilizing sludge

Info

Publication number: WO2019169787A1
Application number: PCT/CN2018/092064
Authority: WO
Inventors: 田鸣; 张晓东; 田果
Original assignee: 四川省德名斯科技有限公司
Priority date: 2018-03-05
Filing date: 2018-06-20
Publication date: 2019-09-12
Also published as: CN108101325A

Abstract

A device for producing solid fuel by utilizing sludge, comprising a raw sludge cabin (1). The lower end of the raw sludge cabin (1) is connected to an intelligent stirring conveyor (2); the upper end of the raw sludge cabin (1) is connected to a raw sludge gas leading-out pipe (101); the upper end of the intelligent stirring conveyor (2) is connected to a parallel cutting machine (4); a bucket type elevator (3) is provided between the parallel cutting machine (4) and the intelligent stirring conveyor (2); a wet flue gas outlet (401) connected to the raw sludge gas leading-out pipe (101) is provided at the upper end of the parallel cutting machine (4); a sludge outlet (402) is formed in the lower end of the parallel cutting machine (4); the upper end of the sludge outlet (402) is connected to a hot air drying device (5); the lower end of the hot air drying device (5) is connected to a waste gas treatment device (7); the lower end of the waste gas treatment device (7) is connected to a wastewater treatment device (8); an air heating furnace (9) is provided at the lower end of the parallel cutting machine (4).

Description

Device for producing solid fuel by using sludge

Technical field

The invention relates to the technical field of sludge treatment, in particular to a device for producing solid fuel by using sludge.

Background technique

With the development of the economy, the progress of society, energy conservation and environmental protection has become an inevitable and social consensus. Sanitary landfills have requirements for landfills and landfill sludge, and the amount of sludge treated is limited. The sludge production is very large and is not conducive to sustainable development in the long run. The sludge is disposed of by incineration, which is highly reduced and harmless, but the investment and operating costs are too high. After composting, agricultural use requires a certain amount of technical capital investment; strict requirements for agricultural use, otherwise it is easy to cause secondary pollution; direct brick making of bricks has problems such as low quality of brick products and difficulty in market sales. My suggestion is to use sludge pyrolysis technology to treat sludge, which has the advantages of lower investment cost, less harmful gas and less energy consumption than incineration treatment; its harmlessness and reduction are also high, although Investing in capital and technology, but because of the recyclable use of pyrolysis gas as a heat source, it has a certain return on efficiency. Therefore, to explore the effective treatment and disposal of China's national conditions, the use of sludge technology and production equipment has important practical significance.

For example, the application number is 201620156827.6, which is a utility model patent for a system that uses sludge to make a regenerative solid fuel:

The system firstly treats the sludge to be dried, and mixes the dried sludge with the coal powder and the rice straw to form a pelletized solid fuel. The system is not only simple in structure. It has a small footprint and high efficiency.

However, the existing sludge production equipment for solid fuel still has the following drawbacks:

(1) The equipment used in the existing sludge solid fuel production device directly passes the solid fuel of the bulk sludge produced by hot air drying or natural air drying, thereby causing a small contact area between the fuel and the external gas to prolong the drying time. Moreover, the produced fuel is also difficult to burn thoroughly, resulting in more energy loss;

(2) Excessive waste water generated by the existing sludge production unit for solid fuel may cause serious environmental pollution.

Summary of the invention

In order to overcome the deficiencies of the prior art solutions, the present invention provides an apparatus for producing solid fuel using sludge, which can effectively solve the problems raised by the background art.

The technical solution adopted by the present invention to solve the technical problem thereof is:

An apparatus for producing a solid fuel by using a sludge, comprising an original sludge tank, wherein a lower end of the raw sludge tank is connected with a smart agitating conveyor, and an upper end of the raw sludge tank is connected with a raw mud gas outlet pipe, A parallel cutter is connected to the upper end of the intelligent agitating conveyor, and a bucket elevator is disposed between the parallel cutter and the intelligent agitating conveyor, and the upper end of the parallel cutter is provided with the raw mud gas outlet pipe a connected wet flue gas outlet, a lower end of the parallel cutter is provided with a sludge outlet, an upper end of the sludge outlet is connected with a hot air drying device, and a lower end of the hot air drying device is connected with an exhaust gas treatment device. The lower end of the exhaust gas treatment device is connected with a waste water processor, and the lower end of the parallel cutter is provided with an air heating furnace;

The intelligent agitating conveyor includes an AC frequency motor, a right end of the AC motor is connected with a reducer, a right end of the reducer is connected with a coupling, and a right end of the coupling is connected with a central axis, the center A propeller is disposed on the shaft body of the shaft, and an intelligent controller is disposed above the propulsion propeller, and an outer end of the intelligent controller is provided with a protective casing, and the protective casing is provided with a sludge inlet, the sludge inlet The right end of the anthracite inlet is provided with a deodorant addition port, the right end of the deodorant addition port is provided with a desulfurization agent addition port, and the right lower end of the protection case is provided with a discharge port;

The bucket elevator includes a lifting machine cover, a feeding port is arranged at a lower right end of the lifting machine cover, a speed regulating motor is arranged directly above the feeding port, and a left end of the speed regulating motor is connected A driving wheel is disposed below the driving wheel, an auxiliary rotating wheel is disposed, a driving belt is connected between the auxiliary rotating wheel and the driving wheel, and a plurality of conveying hoppers are disposed on an outer surface of the driving belt.

Further, the hot air drying device includes a first drying chamber, a second drying chamber is connected to the right end of the first drying chamber, and a first drying chamber flue gas pipe is connected to the upper end of the first drying chamber. a second drying chamber flue gas pipe is connected to the upper end of the second drying chamber, and the first drying chamber flue gas pipe and the second drying chamber flue gas pipe are connected together on the raw mud gas outlet pipe, the second drying A right side of the chamber is provided with a condensed waste water collecting pipe, a lower end of the second drying chamber is connected with a finished product outlet, a right end of the raw mud gas outlet pipe is connected with a fan, and a right end of the fan is connected with a dry exhaust gas outflow pipe.

Further, the exhaust gas treatment device includes a cyclone dust chamber, and a right side of the cyclone dust chamber is connected with a cooling tower, and a right side of the cooling tower is connected with a biological deodorization chamber, and the right side of the biological deodorization chamber is decomposed In the furnace, a desulfurization tower is connected to the right side of the decomposing furnace, and a right gas outlet is connected to the right end of the desulfurization tower, and a cooling waste water outlet pipe is disposed at the bottom end of the cooling tower and the biological deodorization chamber.

Further, the hopper is placed in a reverse tilt on both sides of the outer surface of the belt.

Compared with the prior art, the beneficial effects of the present invention are:

(1) The invention utilizes an intelligent stirring conveyor and a parallel cutting machine to decompose the sludge into small particles, and increases the contact area between the sludge fuel and the air, thereby not only improving the drying efficiency but also increasing the burning rate;

(2) The invention ensures a good solution to some pollutants generated in the process of fuel production through the subsequent treatment of the relevant exhaust gas treatment device and the wastewater processor, avoids environmental pollution, and conforms to the concept of ecological civilization construction in China.

DRAWINGS

Figure 1 is a schematic view of the overall system of the present invention;

2 is a schematic structural view of an intelligent stirring conveyor of the present invention;

3 is a schematic structural view of a bucket elevator of the present invention.

Number in the figure:

1-original sludge bin; 2-intelligent agitating conveyor; 3-bucket hoist; 4-parallel cutting machine; 5-hot air drying device; 6-fan; 7-exhaust gas treatment device; 8--waste water processor; 9-air heating furnace

101-original mud gas outlet pipe;

201-frequency frequency motor; 202-reducer; 203-coupling; 204-protective shell; 205-intelligent controller; 206-propulsion propeller; 207-central shaft; 208-sludge inlet; 209-anthracite inlet; - deodorant addition port; 211 - desulfurizer addition port; 212 - discharge port;

301-extension hood; 302-feed port; 303-speed motor; 304-drive wheel; 305-auxiliary wheel; 306-drive belt; 307-load hopper;

401-wet flue gas outlet; 402-sludge outlet;

501-first drying chamber; 502-second drying chamber; 503-first drying chamber flue gas duct; 504-second drying chamber flue gas duct; 505-condensed wastewater collecting tube; 506-finished product outlet; 507-dry exhaust gas Outflow tube

701 - cyclone dust chamber; 702 - cooling tower; 703 - biological deodorization chamber; 704 - decomposition furnace; 705 - desulfurization tower; 706 - standard gas outlet; 707 - cooling waste water outlet pipe.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

As shown in FIG. 1 , the present invention provides an apparatus for producing solid fuel by using sludge, comprising an original sludge tank 1 , and a lower end of the raw sludge tank 1 is connected with an intelligent stirring conveyor 2, the raw sludge tank The upper end of the 1 is connected with a raw mud gas outlet pipe 101, and the upper end of the intelligent agitating conveyor 2 is connected with a parallel cutter 4, and a bucket elevator is arranged between the parallel cutter 4 and the intelligent agitation conveyor 2. 3. The upper end of the parallel cutter 4 is provided with a wet flue gas outlet 401 connected to the raw mud gas outlet pipe 101, and the lower end of the parallel cutter 4 is provided with a sludge outlet 402, the sludge outlet A hot air drying device 5 is connected to the upper end of the hot air drying device 5, and an exhaust gas treatment device 7 is connected to the lower end of the hot air drying device 5, and a waste water processor 8 is connected to the lower end of the exhaust gas treatment device 7, and the lower end of the parallel cutting machine 4 is connected. An air heating furnace 9 is provided.

In the embodiment of the present invention, the raw sludge is first placed in the original sludge bin 1, and then the sludge of the original sludge bin 1 is sent to the intelligent mixing conveyor 2 for related stirring, and the original sludge bin 1 The gas inside is collected in the raw mud gas outlet pipe 101, and the material from the intelligent agitating conveyor 2 is transported by the bucket elevator 3 to the parallel cutter 4 to be cut into pellets, and the fuel produced in the parallel cutter 4 is again It is transported to the hot air drying device 5 by the bucket elevator 3 for drying. The parallel cutter 4 is connected to the raw mud gas discharge pipe 101 together with the gas generated in the hot air drying device 5, and is uniformly transported by the fan 6 to the exhaust gas treatment device 7. The relevant waste water is discharged from the hot air drying device 5, and is introduced into the wastewater processor 8 for related wastewater treatment. The dry raw material of the entire hot air drying device 5 is supplied from the air heating furnace 9.

As shown in FIG. 1, the hot air drying device 5 includes a first drying chamber 501, and a right drying chamber 501 is connected to a second drying chamber 502, and an upper end of the first drying chamber 501 is connected to the first end. a drying chamber flue gas duct 503, the second drying chamber flue gas duct 504 is connected to the upper end of the second drying chamber 502, and the first drying chamber flue gas duct 503 is shared with the second drying chamber flue gas duct 504. Connected to the raw mud gas outlet pipe 101, the right side of the second drying chamber 502 is provided with a condensed waste water collection pipe 505, and the lower right end of the second drying chamber 502 is connected with a finished product outlet 506, the raw mud gas outlet pipe A fan 6 is connected to the right end of the 101, and a dry exhaust gas outflow pipe 507 is connected to the right end of the fan 6.

The hot air drying device 5 specifically processes the sludge fuel particles by drying the sludge fuel to the first drying chamber 501 for hot air drying to generate corresponding particulate gas and sewage, and the initially processed fuel particles are transported to the second drying chamber 502. In the deep processing, the two hot air treatments ensure thorough drying, and the exhaust gases generated by the two drying chambers are led out by the first drying chamber flue gas duct 503 and the second drying chamber flue gas duct 504. The wastewater is sent out from the condensate collection pipe 505.

As shown in FIG. 1, the exhaust gas treatment device 7 includes a cyclone chamber 701, a cooling tower 702 is connected to the right end of the cyclone chamber 701, and a biological deodorization chamber 703 is connected to the right end of the cooling tower 702. A decomposing furnace 704 is connected to the right side of the deodorizing chamber 703, and a desulfurization tower 705 is connected to the right side of the decomposing furnace 704, and a right gas outlet 706 is connected to the right end of the desulfurization tower 705, and the cooling tower 702 and the living body The bottom end of the deodorizing chamber 703 is provided with a cooling waste water outlet pipe 707.

The process of exhaust gas treatment is to first process the relevant dust through the cyclone dust chamber 701, and the gas enters the cooling tower 702 for cooling (the cooling process can appropriately collect the heat in the gas for secondary use) and then enters the biological deodorization chamber 703 to disperse the gas. The odor, the deodorized gas is decomposed by the decomposition furnace 704 to extract the relevant gas components, and then the desulfurization tower 705 is filtered to remove toxic gases such as sulfur oxides.

As shown in FIG. 2, the intelligent agitation conveyor 2 includes an AC motor 201, a speed reducer 202 is connected to the right end of the AC motor 201, and a coupling 203 is connected to the right end of the reducer 202. The right end of the coupling 203 is connected with a central shaft 207. The shaft of the central shaft 207 is provided with a propeller propeller 206. Above the propulsion propeller 206, an intelligent controller 205 is disposed. The outer end of the intelligent controller 205 is provided with The protective casing 204 is provided with a sludge inlet 208. The right end of the sludge inlet 208 is provided with an anthracite inlet 209, and the right end of the anthracite inlet 209 is provided with a deodorant adding port 210. A desulfurizing agent addition port 211 is disposed at a right end of the odorant addition port 210, and a discharge port 212 is disposed at a lower right end of the protective casing 204.

The operation of the intelligent agitating conveyor 2 is that first, the AC motor 201 rotates with the coupling 203 to rotate the central shaft 207, and the central shaft 207 rotates to rotate the propeller 206, propels the propeller 206 to agitate and pushes the sludge forward. The agitation process adds anthracite from the anthracite inlet 209, the deodorant addition port 210 adds a deodorant, the desulfurizer addition port 211 adds the relevant desulfurization reagent, and finally the preliminary solid fuel product is obtained from the discharge port 212.

As shown in FIG. 3, the bucket elevator 3 includes a lifting machine cover 301. The lower right end of the lifting machine cover 301 is provided with a feeding port 302, and a speed adjustment is arranged directly above the feeding port 302. a motor 303, a driving wheel 304 is connected to the left end of the speed regulating motor 303, an auxiliary rotating wheel 305 is disposed below the driving wheel 304, and a transmission belt 306 is connected between the auxiliary rotating wheel 305 and the driving wheel 304. A plurality of hoppers 307 are disposed on an outer surface of the belt 306.

The working process of the bucket elevator 3 is that the speed regulating motor 303 rotates with the driving wheel 304 to rotate, the driving wheel 304 rotates with the auxiliary rotating wheel 305 through the belt 306, and the conveying hopper 307 on the belt 306 carries the relevant solid fuel for upward extension. transport.

As shown in FIG. 3, the hopper 307 is placed in a reverse tilt on both sides of the outer surface of the belt 306.

In this way, the hopper 307 on the right side smoothly transports the material to the upper end, and the hopper 307 on the left side reverses the material to be unloaded in the storage position, thereby realizing the recycling of the hopper 307, which is convenient and orderly.

It is apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the invention is defined by the appended claims instead All changes in the meaning and scope of equivalent elements are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim.

Claims

An apparatus for producing solid fuel by using sludge, comprising: an original sludge tank (1), and a lower end of the raw sludge tank (1) is connected with an intelligent stirring conveyor (2), the raw sludge The upper end of the silo (1) is connected with a raw mud gas outlet pipe (101), and the upper end of the intelligent agitating conveyor (2) is connected with a parallel cutting machine (4), and the parallel cutting machine (4) and the intelligent stirring A bucket elevator (3) is disposed between the conveyors (2), and an upper end of the parallel cutter (4) is provided with a wet flue gas outlet (401) connected to the raw mud gas outlet pipe (101). The lower end of the parallel cutting machine (4) is provided with a sludge outlet (402), and the upper end of the sludge outlet (402) is connected with a hot air drying device (5), and the hot air drying device (5) The lower end is connected with an exhaust gas treatment device (7), the lower end of the exhaust gas treatment device (7) is connected with a waste water processor (8), and the lower end of the parallel cutting machine (4) is provided with an air heating furnace (9);

The intelligent agitating conveyor (2) includes an AC motor (201), a right end of the AC motor (201) is connected with a speed reducer (202), and a right end of the speed reducer (202) is connected with a coupling (203), a right shaft (207) is connected to the right end of the coupling (203), and a propeller (206) is disposed on the shaft body of the central shaft (207), and the propeller (206) is disposed above the propeller (206) An intelligent controller (205), the outer end of the intelligent controller (205) is provided with a protective casing (204), and the protective casing (204) is provided with a sludge inlet (208), and the sludge inlet (208) An anthracite inlet (209) is disposed at a right end of the anthracite inlet (209), and a deodorant addition port (210) is disposed at a right end of the anthracite inlet (209), and a desulfurizing agent addition port is disposed at a right end of the deodorant addition port (210) 211), the lower right end of the protective casing (204) is provided with a discharge port (212);

The bucket elevator (3) includes a drafting machine cover (301), and a lower right end of the drafting machine cover (301) is provided with a feeding port (302), directly above the feeding port (302) A speed regulating motor (303) is disposed, a left end of the speed regulating motor (303) is connected with a driving wheel (304), and an auxiliary rotating wheel (305) is disposed below the driving wheel (304), the auxiliary rotating wheel A transmission belt (306) is connected between the driving wheel (304) and the driving belt (306), and a plurality of conveying hoppers (307) are disposed on the outer surface of the driving belt (306).
The apparatus for producing solid fuel by using sludge according to claim 1, wherein the hot air drying device (5) comprises a first drying chamber (501), and the first drying chamber (501) A second drying chamber (502) is connected to the right end of the first drying chamber (501), and a first drying chamber flue gas duct (503) is connected to the upper end of the first drying chamber (501), and the upper end of the second drying chamber (502) is connected to the first end. a second drying chamber flue gas duct (504), the first drying chamber flue gas duct (503) and the second drying chamber flue gas duct (504) are connected together on a raw mud gas outlet pipe (101), The right side of the second drying chamber (502) is provided with a condensed wastewater collecting pipe (505), and the lower right end of the second drying chamber (502) is connected with a finished product outlet (506), and the raw mud gas outlet pipe (101) A fan (6) is connected to the right end, and a dry exhaust gas outflow pipe (507) is connected to the right end of the fan (6).
The apparatus for producing solid fuel by using sludge according to claim 1, wherein the exhaust gas treatment device (7) comprises a cyclone dust chamber (701), and a right end of the cyclone dust chamber (701) is connected a cooling tower (702) having a biological deodorization chamber (703) connected to a right end of the cooling tower (702), and a decomposition furnace (704) connected to a right side of the biological deodorization chamber (703), the decomposition furnace ( a desulfurization tower (705) is connected to the right side of the 704), and a right gas outlet (706) is connected to the right end of the desulfurization tower (705), and the cooling tower (702) and the bottom of the biological deodorization chamber (703) The ends are provided with a cooling waste water outlet pipe (707).
A device for producing solid fuel using sludge according to claim 1, characterized in that the hopper (307) is placed in a reverse inclination on both sides of the outer surface of the belt (306).