Recycling, burning and reusing device for semi-coke dry distillation waste gas

Abstract

The utility model relates to the field of semi-coke dry distillation, and discloses a semi-coke dry distillation waste gas recycling, burning and reusing device which comprises a gas collecting pipe, one end of the gas collecting pipe is communicated with one end of a gas collecting hood, the other end of the gas collecting pipe is communicated with one end of a cleaning assembly, and the other end of the cleaning assembly is communicated with one end of a gas pump through a conveying pipe. According to the semi-coke dry distillation waste gas recycling and reusing device, the semi-coke dry distillation waste gas can be conveniently recycled and reutilized, and the semi-coke dry distillation waste gas recycling and reusing device is energy-saving and environment-friendly.

Description

Technical Field

[0001] The utility model relates to the field of semi-coke dry distillation, in particular to a device for recovering, burning and reusing semi-coke dry distillation waste gas. Background Art

[0002] Semi-coke is a product of coal conversion. It is a low-volatile solid carbon product obtained by dry distillation and pyrolysis of non-viscous or weakly viscous high-volatile bituminous coal under medium and low temperature conditions. During the dry distillation process of coal, most of the volatile matter (mainly including NOx and SOx), sulfur, phosphorus and other heteroatoms and water are released. As an environmentally friendly fuel, semi-coke is superior to bituminous coal and anthracite in all indicators. Semi-coke produced has many high-quality characteristics and has unique properties as a carbonaceous reducing agent. It is widely used in ferroalloys, fertilizers, calcium carbide, blast furnace injection and other industries. It can also be used as a raw material for coal-to-methanol, coal-to-oil, water-coal slurry, activated carbon, ultra-pure coal, etc. It can also be directly used for civil and industrial combustion and gasification, and has good market competitiveness.

[0003] Low-temperature dry distillation internal combustion and internal heating continuous vertical square furnace process technology. The raw coal is sent to the carbonization furnace after screening, and the carbonization furnace produces raw coal gas and blue coke. The raw coal gas enters the horizontal tube cooler from the top of the furnace for cooling, and is separated into gas and liquid by equipment such as electric tar collector. Part of the coal gas is sent back to the furnace for combustion, and the remaining coal gas is exported to comprehensive utilization for power generation. The separated liquid flows into the tar ammonia separation tank and is separated into oil and water after standing. The coal tar is sent to the tar storage tank, and the remaining ammonia water after separation is sent to the park sewage treatment plant for treatment except for recycling. The blue coke after dry distillation is discharged into the scraper conveyor through the coke pusher at the bottom of the carbonization furnace, and is sent to the coke shed for storage through the belt conveyor.

[0004] During the production of lignite, a large amount of waste gas is generated during the low-temperature dry distillation of coal, mainly including raw coal gas, ammonia, hydrogen sulfide, coal tar and particulate matter. If it is directly discharged into the atmosphere without treatment, it will cause pollution. At the same time, most of the waste gas is combustible gas, and it is very wasteful to treat it directly as waste gas. The treatment of the above-mentioned waste gas generally uses a water scrubber for treatment. The existing water scrubber treatment process does not have sufficient contact with the waste gas. For this reason, the present application proposes a recovery, combustion and reuse device for lignite dry distillation waste gas to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to provide a device for recovering, burning and reusing the waste gas from the dry distillation of blue charcoal, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for recovering, burning and reusing lignite distillation waste gas, comprising an air collecting pipe whose one end is connected to one end of an air collecting hood, the other end of the air collecting pipe is connected to one end of a cleaning component, and the other end of the cleaning component is connected to one end of an air pump through a delivery pipe, the other end of the air pump is connected to one end of a demister through a delivery pipe, and the other end of the demister is connected to the inside of the boiler through an air supply pipe.

[0007] Preferably, the cleaning assembly comprises a water washing box with an open chamber, and one end of the water washing box is connected to one end of the gas collecting pipe.

[0008] Preferably: a water storage tank is fixedly installed on the top of the water washing box, and a first water distribution pipe and a second water distribution pipe are arranged in parallel in the vertical direction in the water washing box chamber.

[0009] Preferably: one end of the first water distribution pipe and the second water distribution pipe are respectively connected to one end of the water storage tank through a hose, and a plurality of sprinkler heads are linearly installed at the bottom ends of the first water distribution pipe and the second water distribution pipe.

[0010] Preferably: a guide plate fixedly connected to the inner wall of the washing box is provided between the first water distribution pipe and the second water distribution pipe, and the top end of the guide plate is provided as an inclined structure.

[0011] Preferably: a filter screen is fixedly installed at the bottom end of the water washing box chamber, and a sewage pipe connected to the inside of the water washing box chamber is fixedly installed at the bottom end of the water washing box chamber on one side of the filter screen.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model collects the waste gas generated in the distillation process at one end of the gas collecting pipe through the gas collecting hood, and then sends the waste gas into the cleaning component through the gas collecting pipe for water washing. The waste gas after water washing is driven by an air pump and transmitted to the demister through a delivery pipe for defogger, and then the residual combustible gas is sent into the furnace for combustion through the air delivery pipe, so as to recycle the waste gas. In order to make the water-soluble components in the waste gas more in contact with water, a first water distribution pipe and a second water distribution pipe are arranged in the water washing box, and the waste gas is sprayed by multiple spray heads. The first water distribution pipe and the second water distribution pipe are separated by the arranged guide plate, so that the waste gas can be more fully in contact with water. The particulate matter in the waste gas is dissolved in water and filtered by a filter, so that the solid particles in the waste gas and the waste gas dissolved in water are separated, and the sewage is discharged from the sewage pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the cleaning component of the utility model.

[0016] In the figure: 1. air collecting pipe; 2. cleaning assembly; 3. delivery pipe; 4. air pump; 5. demister; 6. air delivery pipe; 21. water washing box; 22. water storage tank; 23. first water distribution pipe; 24. second water distribution pipe; 25. sprinkler head; 26. filter; 27. guide plate; 28. sewage pipe. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Embodiment 1

[0019] See also Figure 1-Figure 2 The figure shows a device for recovering, burning and reusing waste gas from the dry distillation of semi-coke, comprising a gas collecting pipe 1 whose one end is connected to one end of a gas collecting hood, and the other end of the gas collecting pipe 1 is connected to one end of a cleaning component 2, and the other end of the cleaning component 2 is connected to one end of an air pump 4 through a delivery pipe 3, the other end of the air pump 4 is connected to one end of a demister 5 through the delivery pipe 3, and the other end of the demister 5 is connected to the inside of the boiler through an air supply pipe 6.

[0020] In this embodiment, the cleaning component 2 includes a water washing box 21 with an open chamber, and one end of the water washing box 21 is connected to one end of the air collecting pipe 1, a water storage tank 22 is fixedly installed on the top of the water washing box 21, and a first water distribution pipe 23 and a second water distribution pipe 24 are arranged in parallel in the vertical direction in the chamber of the water washing box 21, one end of the first water distribution pipe 23 and the second water distribution pipe 24 are respectively connected to one end of the water storage tank 22 through a hose, and a plurality of spray heads 25 are linearly installed at the bottom ends of the first water distribution pipe 23 and the second water distribution pipe 24, a guide plate 27 fixedly connected to the inner wall of the water washing box 21 is arranged between the first water distribution pipe 23 and the second water distribution pipe 24, and the top end of the guide plate 27 is arranged as an inclined structure, a filter screen 26 is fixedly installed at the bottom end of the chamber of the water washing box 21, and a sewage pipe 28 connected to the inside of the chamber of the water washing box 21 is fixedly installed at the bottom end of the chamber of the water washing box 21 on one side of the filter screen 26.

[0021] Furthermore, the waste gas generated in the distillation process is collected at one end of the gas collecting pipe 1 through a gas collecting hood and then sent to the cleaning component 2 through the gas collecting pipe 1 for water washing. The waste gas after water washing is driven by the air pump 4 and transmitted to the demister 5 through the delivery pipe 3 for defogger. The residual combustible gas is then sent into the furnace through the air delivery pipe 6 for combustion, thereby recycling the waste gas.

[0022] Furthermore, in order to allow the water-soluble components in the exhaust gas to come into contact with water more, a first water distribution pipe 23 and a second water distribution pipe 24 are provided in the water washing box 21, and the exhaust gas is sprayed by multiple spray heads 25. The first water distribution pipe 23 and the second water distribution pipe 24 are separated by the guide plate 27, so that the exhaust gas can come into contact with water more fully, and the particulate matter in the exhaust gas is dissolved in water and filtered through the filter 26, so that the solid particles in the exhaust gas are separated from the exhaust gas soluble in water, and the sewage is discharged from the sewage pipe 28.

[0023] The working principle of the utility model is as follows: the exhaust gas generated by the distillation process is collected at one end of the gas collecting pipe 1 through the gas collecting hood and then sent to the cleaning component 2 through the gas collecting pipe 1 for water washing. The exhaust gas after water washing is driven by the air pump 4 and transmitted to the demister 5 through the conveying pipe 3 for defogger, and then the residual combustible gas is sent to the furnace for combustion through the air delivery pipe 6, so as to recycle the exhaust gas. In order to make the water-soluble components in the exhaust gas more in contact with water, a first water distribution pipe 23 and a second water distribution pipe 24 are arranged in the water washing box 21, and the exhaust gas is sprayed by multiple spray heads 25. The first water distribution pipe 23 and the second water distribution pipe 24 are separated by the guide plate 27, so that the exhaust gas can be more fully in contact with water. The particulate matter in the exhaust gas is dissolved in water and filtered by the filter screen 26, so that the solid particles in the exhaust gas are separated from the exhaust gas soluble in water, and the sewage is discharged from the sewage pipe 28.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for recovering, burning and reusing waste gas from carbonization of blue charcoal, comprising a gas collecting pipe (1) having one end connected to one end of a gas collecting hood, characterized in that: The other end of the gas collecting pipe (1) is connected to one end of the cleaning component (2), and the other end of the cleaning component (2) is connected to one end of the air pump (4) through the delivery pipe (3), the other end of the air pump (4) is connected to one end of the demister (5) through the delivery pipe (3), and the other end of the demister (5) is connected to the inside of the boiler through the air supply pipe (6).

2. The device for recycling, burning and reusing blue charcoal dry distillation waste gas according to claim 1, characterized in that: The cleaning assembly (2) comprises a water washing box (21) having a chamber, and one end of the water washing box (21) is connected to one end of the gas collecting pipe (1).

3. The device for recycling, burning and reusing blue charcoal dry distillation waste gas according to claim 2, characterized in that: A water storage tank (22) is fixedly mounted on the top of the water washing box (21), and a first water distribution pipe (23) and a second water distribution pipe (24) are arranged in parallel in the vertical direction in the chamber of the water washing box (21).

4. The device for recycling, burning and reusing blue charcoal dry distillation waste gas according to claim 3, characterized in that: One end of the first water distribution pipe (23) and one end of the second water distribution pipe (24) are respectively connected to one end of the water storage tank (22) through a hose, and a plurality of spray heads (25) are linearly installed at the bottom ends of the first water distribution pipe (23) and the second water distribution pipe (24).

5. The device for recovering, burning and reusing the waste gas from carbonization of blue charcoal according to claim 4, characterized in that: A guide plate (27) fixedly connected to the inner wall of the washing box (21) is arranged between the first water distribution pipe (23) and the second water distribution pipe (24), and the top end of the guide plate (27) is arranged as an inclined structure.

6. The device for recycling, burning and reusing blue charcoal dry distillation waste gas according to claim 5, characterized in that: A filter screen (26) is fixedly installed at the bottom end of the water washing box (21) chamber, and a sewage pipe (28) connected to the inside of the water washing box (21) chamber is fixedly installed at the bottom end of the water washing box (21) chamber on one side of the filter screen (26).

Images