CN106753591B

CN106753591B - Tar separator

Info

Publication number: CN106753591B
Application number: CN201710046620.2A
Authority: CN
Inventors: 李本平; 陈文凯; 李达; 刘齐根; 肖建群
Original assignee: Hunan Yuanyang Coal Machine Manufacturing Co ltd
Current assignee: Hunan Yuanyang Coal Machine Manufacturing Co ltd
Priority date: 2017-01-19
Filing date: 2017-01-19
Publication date: 2020-09-04
Anticipated expiration: 2037-01-19
Also published as: CN106753591A

Abstract

The invention relates to a tar separation device. The tar separation device comprises a support, a pyrolysis gas input pipe, tar collection units, a pyrolysis gas output pipe and a circulating water supply system, wherein the tar collection units are fixed on the support, and the number of the tar collection units is at least two; the pyrolysis gas input pipe is connected with the leftmost tar collecting unit, and the pyrolysis gas output pipe is connected with the rightmost tar collecting unit; the adjacent tar collecting units are connected through a separation pipeline; and a spraying system is arranged at the upper part of the separation pipeline and is connected with a circulating water supply system. The tar separation device has the advantages of quick heat dissipation, good cooling effect, simple structure, low manufacturing cost and use cost, and capability of greatly saving energy.

Description

Tar separator

Technical Field

The invention belongs to the field of biomass gasification furnaces, and particularly relates to a tar separation device.

Background

The environmental pollution of garbage is becoming more serious day by day, in 2016, the national institute of development and improvement, the ministry of housing and construction, the ministry of national resources and environmental protection issue an opinion on further strengthening the incineration treatment of municipal solid waste together, which fully shows that the harmless treatment of garbage is promoted to the national level.

The biomass gasification furnace is one of key equipment for realizing the harmless treatment of garbage, and the tar separation is an indispensable important process in the purification process of the biomass gas. In the process of pyrolysis and gasification of the biomass gasification furnace, garbage can generate a plurality of gases, and the gases can enter the generator set after being purified by a plurality of processes. The tar is black viscous liquid under high temperature, the relative density is more than 1.0, and the asphalt content is more than 50%, so the tar must be separated before the biomass gas enters the power generation set. At present, a tar collecting unit in the market mainly adopts a method of cold spraying in a tower type vertical cylinder and combining centrifugal separation. The greatest disadvantage of the spray inner cooling equipment is that water vapor in the cylinder is difficult to diffuse in time during water cooling, and the cooling effect is poor. The tar enters the water storage tank along with the drain pipe and can be circularly cooled only by water treatment through refrigeration equipment. Therefore, the existing tar separation equipment is complex, a circulating water cooling system and a centrifugal separation system need to be arranged, a water storage tank with large floor area needs to be arranged, in addition, tar in the water storage tank needs to be cleaned frequently, and the complexity of the production process and the equipment investment cost are increased.

Disclosure of Invention

The invention aims to provide a tar separation device which is simple in structure, fast in cooling and good in separation effect, aiming at the defects of the existing tar separation equipment.

The technical scheme of the invention is as follows: a tar separation device comprises a support, a pyrolysis gas input pipe, tar collection units, a pyrolysis gas output pipe and a circulating water supply system, wherein the tar collection units are fixed on the support, and the number of the tar collection units is at least two; the pyrolysis gas input pipe is connected with the leftmost tar collecting unit, and the pyrolysis gas output pipe is connected with the rightmost tar collecting unit; the adjacent tar collecting units are connected through a separation pipeline; and a spraying system is arranged at the upper part of the separation pipeline and is connected with a circulating water supply system.

Furthermore, the separation pipeline is an arc-shaped vertical pipe, two ends of the arc-shaped vertical pipe, which are connected with the tar collecting unit, are vertical pipes, and the middle part of the arc-shaped vertical pipe is a semicircular arc-shaped pipe.

Preferably, the spraying system comprises a water supply pipeline frame matched with the shape and size of the frame at the top of the support, a spraying pipeline is arranged in the water supply pipeline frame, a cooling water spraying hole is formed in the bottom of the spraying pipeline, the water supply pipeline frame is connected with the circulating water supply system, and a water pressure regulating valve is arranged on the water supply pipeline frame to regulate the size of spraying water.

Further, the support comprises a support upright post, and the support upright post is a hollow pipeline.

Furthermore, the circulating water supply system comprises a water storage tank, a circulating water supply pipeline and a water containing tray, the water containing tray is arranged at the upper part of the tar collecting unit, an overflow gap is arranged at the junction of the side part of the water containing tray and the stand column of the bracket, and the bottom of the stand column of the bracket is connected with the water storage tank; and a water pump is arranged on the circulating water supply pipeline, one end of the circulating water supply pipeline is connected with the water storage tank, and the other end of the circulating water supply pipeline is connected with a water supply pipeline frame of the spraying system.

The support upright post adopts a hollow pipeline, so that on one hand, materials can be saved, on the other hand, the bottom of the support upright post is connected with the water storage tank, and under the matching action of the overflow gap, circulating water in the water containing disc can directly flow back to the water storage tank, so that the quantity of pipelines is reduced; the circulating water collected in the water containing tray is exposed in the air, is rapidly cooled and then flows into the water storage tank through the overflow port.

Furthermore, the periphery of the water containing disc is provided with the windshields which are fixed on the support through the glass fixing plates, the arrangement of the windshields can well prevent the splashing loss of circulating water, and the probability that pollutants fall into the water containing disc is greatly reduced, so that accidents such as pipeline blockage are prevented.

Further, tar separator still includes the oil storage system, the oil storage system includes oil reservoir and recovery tube, oil reservoir and recovery tube pass through the intercommunication articulate, the oil storage system passes through the recovery tube and is connected with tar collection unit.

Further, the tar collecting unit comprises a tar cone hopper, the bottom of the tar cone hopper is connected with a valve, the bottom of the valve is provided with an oil return hopper, and the oil return hopper is connected with a recovery pipe; therefore, when the oil storage amount in the tar cone exceeds the preset capacity, the valve is opened, and the tar flows into the tar storage system.

Furthermore, the number of the pyrolysis gas input pipes and the number of the pyrolysis gas output pipes are three; the number of the separation pipelines between two adjacent tar collecting units is three.

Preferably, the number of the tar collecting units is four, the tar separation process is divided into four separation processes, and the four separation processes are performed step by step, so that a more complete tar separation effect can be obtained.

The design of the arc-shaped vertical pipe can increase the walking distance of the gas in the separation device and slow down the flow velocity of the gas in the pipeline so as to improve the retention time of the gas in the separation device and enable tar to be more fully separated; the number of the pyrolysis gas input pipes, the pyrolysis gas output pipes and the number of the separation pipelines between the adjacent tar collecting units are all set to be multiple, so that the gas pressure in each pipeline can be reduced, the flowing speed of gas in a separation system is reduced, the retention time of the gas in a separation device is delayed, the contact area of the separation pipeline and cooling water is increased, the cooling is more sufficient, the heat exchange area is increased, and the tar separation rate is increased.

By adopting the structure design, each tar collecting unit and the pipeline at the upper part of the tar collecting unit form a tar separating unit; the spraying system is arranged at the upper parts of the separation pipeline and the tar cone hopper, after pyrolysis gas enters the tar separation device, circulating water in the spraying pipeline is sprayed on the separation pipeline through cooling water spraying holes, the pyrolysis gas in the tar separation device is rapidly and gradually cooled under the cooling effect of the circulating water, the tar in the pyrolysis gas is changed into liquid or mud under the influence of temperature reduction, the tar which is changed into liquid in the separation pipeline enters the tar cone hopper along the separation pipeline, and the pyrolysis gas after tar separation enters the next application procedure through a pyrolysis gas output pipe; after the circulating water is sprayed on the separation pipeline, the circulating water falls down along the separation pipeline, and meanwhile, the circulating water dissipates heat into the air, falls into a circulating water supply system and enters the next circulation.

Compared with the prior art, the invention has the beneficial effects that: the tar separation device has fast heat dissipation and good cooling effect; the structure is simple, relevant parts such as circulating water recooling, a tar mechanical centrifugal separation system and the like are omitted, energy is saved, and the manufacturing cost and the use cost of the tar separation device are greatly reduced.

Drawings

FIG. 1 is a front view of a tar separator according to a first embodiment of the present invention.

FIG. 2 is a left side view of a tar separator according to a first embodiment of the present invention.

FIG. 3 is a plan view of a tar separation device according to a first embodiment of the present invention (wherein the spray pipes are not shown).

Fig. 4 is a schematic bottom view of a spray system according to a first embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

FIG. 1 is a front view of a tar separator according to a first embodiment of the present invention. The tar separation device comprises 1 support 6, 3 pyrolysis gas input pipes 20, a tar collection unit 21, a tar collection unit 22, a tar collection unit 23, a

tar collection unit

24, 3 pyrolysis gas output pipes 16, 1 oil storage system and 1 circulating water supply system, wherein the tar collection unit 21, the tar collection unit 22, the tar collection unit 23 and the tar collection unit 24 are sequentially fixed at the same height on the support 10 from left to right, the tar collection unit comprises a tar cone hopper 11, the bottom of the tar cone hopper 11 is connected with a valve 9, the bottom of the valve 9 is provided with an oil return hopper 8, and the oil return hopper 8 is connected with the oil storage system; the pyrolysis gas input pipe 20 is connected with the tar cone hopper 11 of the leftmost tar collection unit 21, and the pyrolysis gas output pipe 16 is connected with the tar cone hopper 11 of the rightmost tar collection unit 24; the tar cone hoppers 11 of the tar collecting unit 21, the tar collecting unit 22, the tar collecting unit 23 and the tar collecting unit 24 are respectively connected through 3 separating

pipelines

17, 3 separating

pipelines

18 and 3 separating pipelines 19; separating duct 17, separating duct 18 and separating duct 19's upper portion is equipped with spraying system, spraying system include with 6 top frame's of support shape, size assorted square water supply pipe frame 1, be equipped with water pressure regulating valve 3 on the water supply pipe frame 1, be equipped with three spray pipe 2 along its length direction in the water supply pipe frame 1, spray pipe 2's bottom is equipped with cooling water spray hole 27, water supply pipe frame 1 is connected with circulation water supply system.

The support 6 comprises a support upright post 10, and the support upright post 10 is a hollow pipeline; the circulating water supply system comprises a water storage tank 4, a circulating water supply pipeline 15 and a water containing disc 13, the water containing disc 13 is arranged on the tar cone bucket 11, an overflow gap 12 is arranged at the junction of the side part of the water containing disc 13 and the support upright post 10, and the bottom of the support upright post 10 is connected with the water storage tank 4; a water pump 5 is arranged on the circulating water supply pipeline 15, one end of the circulating water supply pipeline 15 is connected with the water storage tank 4, and the other end of the circulating water supply pipeline 15 is connected with a water supply pipeline frame 1 of the spraying system; the periphery of the water containing disc 13 is provided with a windshield 14, and the windshield 14 is fixed on the bracket 6 through a glass fixing plate 31; the oil storage system comprises an oil storage device 26 and a recovery pipe 7, wherein the oil storage device 26 and the recovery pipe 7 are connected through a communication joint 25, the communication joint 25 is a three-way joint, and the oil storage system is respectively connected with oil return hoppers 8 of four tar collecting units through two recovery pipes 7.

The separation pipeline 17, the separation pipeline 18 and the separation pipeline 19 are all arc-shaped vertical pipes, two ends of each arc-shaped vertical pipe, which are connected with the four tar collecting units, are vertical pipes, and the middle parts of the arc-shaped vertical pipes are semicircular arc-shaped pipes.

When the device is used, the valve 9 on the tar collecting unit is closed, the pyrolysis gas is introduced, the pyrolysis gas starts to flow in the tar separating device, the water pump 5 is started, cooling water enters the spraying system through the circulating water supply pipeline 15, the cooling water spraying flow rate is adjusted by the water pressure adjusting valve 3, the cooling water is sprinkled on the separating pipeline 17, the separating pipeline 18 and the separating pipeline 19 through the cooling water spraying holes 27, the temperature of the pyrolysis gas in the separating pipeline 17, the separating pipeline 18 and the separating pipeline 19 is reduced under the action of the cooling water, the tar is separated out in a liquid or mud shape and is enriched in the tar cone 11, and the pyrolysis gas enters the next step of application after passing through the four-stage tar collecting unit; when the tar amount stored in the tar cone 11 exceeds the preset capacity, the input of pyrolysis gas is stopped, the valve 9 is opened, and tar flows into the oil reservoir 26 through the oil return hopper 8, the tar recovery pipe 7 and the communication joint 25 in sequence.

Although the present invention has been described with reference to the above embodiments, it should be understood that the present invention is not limited to the above embodiments, and other embodiments and equivalents thereof may be substituted for those skilled in the art without departing from the scope of the present invention.

Claims

1. A tar separation device comprises a bracket (6), a pyrolysis gas input pipe (20), tar collection units (21; 22; 23; 24), a pyrolysis gas output pipe (16) and a circulating water supply system, wherein the tar collection units (21; 22; 23; 24) are fixed on the bracket (6), and the tar separation device is characterized in that the number of the tar collection units (21; 22; 23; 24) is at least two in turn from left to right; the pyrolysis gas input pipe (20) is connected with the leftmost tar collecting unit (21), and the pyrolysis gas output pipe (16) is connected with the rightmost tar collecting unit (24); the adjacent tar collecting units (21; 22; 23; 24) are connected through a separation pipeline (17; 18; 19); the upper part of the separation pipeline (17; 18; 19) is provided with a spraying system which is connected with a circulating water supply system; the separation pipeline (17; 18; 19) is an arc-shaped vertical pipe, the two ends of the arc-shaped vertical pipe, which are connected with the tar collecting unit (21; 22; 23; 24), are vertical pipes, and the middle part of the arc-shaped vertical pipe is a semicircular arc-shaped pipe; the spraying system comprises a water supply pipeline frame (1) matched with the shape and size of a frame at the top of the support (6), a spraying pipeline (2) is arranged in the water supply pipeline frame (1), cooling water spraying holes (27) are formed in the bottom of the spraying pipeline (2), the water supply pipeline frame (1) is connected with a circulating water supply system, and a water pressure regulating valve (3) is arranged on the water supply pipeline frame (1); the circulating water supply system comprises a water storage pool (4), a circulating water supply pipeline (15) and a water containing disc (13), wherein the water containing disc (13) is arranged at the upper part of a tar collecting unit (21; 22; 23; 24), an overflow gap (12) is arranged at the junction of the side part of the water containing disc (13) and the support upright post (10), and the bottom of the support upright post (10) is connected with the water storage pool (4); and a water pump (5) is arranged on the circulating water supply pipeline (15), one end of the circulating water supply pipeline (15) is connected with the water storage tank (4), and the other end of the circulating water supply pipeline (15) is connected with a water supply pipeline frame (1) of the spraying system.

2. The tar separation device according to claim 1, wherein the support (6) comprises a support pillar (10), the support pillar (10) being a hollow pipe.

3. The tar separation device according to claim 1, wherein a windshield (14) is disposed around the water tray (13), and the windshield (14) is fixed on the bracket (6) through a glass fixing plate (31).

4. The tar separation device according to any one of claims 1 to 3, further comprising an oil storage system, wherein the oil storage system comprises an oil reservoir (26) and a recovery pipe (7), the oil reservoir (26) and the recovery pipe (7) are connected by a communication joint (25), and the oil storage system is connected with the tar collection unit (21; 22; 23; 24) by the recovery pipe (7).

5. The tar separation device according to claim 4, wherein the tar collection unit (21; 22; 23; 24) comprises a tar cone (11), a valve (9) is connected to the bottom of the tar cone (11), an oil return hopper (8) is arranged at the bottom of the valve (9), and the oil return hopper (8) is connected to the recovery pipe (7).

6. The tar separation device according to claim 5, characterized in that the pyrolysis gas inlet pipe (20) and the pyrolysis gas outlet pipe (16) are three in number; the number of the separation pipelines (17; 18; 19) between two adjacent tar collecting units (21; 22; 23; 24) is three.

7. Tar separation device according to any of the claim 6, characterized in that the number of tar collection units (21; 22; 23; 24) is four.