Gasification furnace deslagging waste gas treatment device
By designing a waste gas treatment device for slag discharge from the gasifier, the problem of excessive levels of dust-containing gases such as CO and H2S in the slag removal machine was solved, realizing the recycling and utilization of waste gas and environmental protection, thereby improving enterprise efficiency and working environment safety.
Patent Information
- Application Number
- CN202423089667.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-13
AI Technical Summary
The slag removed by the existing slag removal machine, as well as the hot air at the top of the slag removal machine and above, contain dust-laden gases such as CO and H2S, causing the on-site GDS alarm to exceed the standard and triggering an alarm, which affects the safety of the environment and working environment.
Design a gasifier slag discharge exhaust gas treatment device, including a slag remover, an exhaust fan, a main pipeline, a pipeline Venturi scrubber, and an exhaust gas scrubbing tower. The dust-laden gas is sent to the main pipeline by the exhaust fan, where it undergoes preliminary washing before entering the exhaust gas scrubbing tower. The scrubbing tower uses washing water for further washing to ensure that the gas meets emission standards and recovers valuable sulfur components.
It enables the recycling and utilization of waste gas, protects the environment, improves the safety of the working environment, ensures that gas emissions meet standards, and enhances corporate efficiency.
Smart Images
Figure CN223570379U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to gasification furnace waste gas treatment equipment, concretely relates to a kind of gasification furnace slagging waste gas treatment device. BACKGROUND
[0002] The molten slag generated by the combustion chamber of the gasification furnace is cooled in the quenching chamber and then settled at the bottom of the quenching chamber. The coarse slag and other solid particles at the bottom of the quenching chamber are pumped into the lock hopper through the slag breaker, the lock hopper safety valve and the slag collecting valve under the action of the lock hopper circulating water pump. Most of the solid particles from the gasification furnace are deposited at the bottom of the lock hopper. The slagging process of the gasification furnace is realized through repeated pressurization and pressure relief of the lock hopper, i.e. the lock hopper circulation. The coarse slag and slag water of the gasification furnace are discharged into the slag extractor, and the overflow valve between the two bins remains closed. The solid ash and slag are settled on the scraper conveyor, and then the solid slag is extracted from the slag pool through the scraper conveyor. After the water content is removed through the vibrating screen, the slag is sent to the slag yard. During the entire slagging process of the gasification furnace, the slag extracted by the slag extractor and the dust-containing gas, such as CO and H2S, in the hot gas at the top and upper part of the slag extractor cause the CO, H2S and GDS probes on site to alarm.
[0003] Therefore, how to realize waste gas recycling and avoid the over-standard alarm of the GDS alarm instrument on site due to the dust-containing gas, such as CO and H2S, in the slag extracted by the existing slag extractor and the hot gas at the top and upper part of the slag extractor is a technical problem to be solved urgently. SUMMARY
[0004] The technical task of the utility model is to provide a kind of gasification furnace slagging waste gas treatment device to solve the problem of how to realize waste gas recycling and avoid the over-standard alarm of the GDS alarm instrument on site due to the dust-containing gas, such as CO and H2S, in the slag extracted by the existing slag extractor and the hot gas at the top and upper part of the slag extractor.
[0005] The technical task of the utility model is realized in the following manner. A kind of gasification furnace slagging waste gas treatment device includes a slag extractor A, a slag extractor B, an induced draft fan A, an induced draft fan B, a main pipeline and a waste gas scrubbing tower. The slag extractor A is connected to the inlet end of the induced draft fan A through an induced draft fan inlet pipeline A, and the outlet end of the induced draft fan A is provided with an induced draft fan outlet pipeline A. The slag extractor B is connected to the inlet end of the induced draft fan B through an induced draft fan inlet pipeline B, and the outlet end of the induced draft fan B is provided with an induced draft fan outlet pipeline B. The induced draft fan outlet pipeline B and the induced draft fan outlet pipeline A are respectively connected to one end of the main pipeline. The other end of the main pipeline is provided with a pipeline type venturi scrubber. One end of the pipeline type venturi scrubber is connected to the main pipeline, and the other end of the pipeline type venturi scrubber is located at a lower position in the middle of the waste gas scrubbing tower. A sulfur-containing liquid discharge pipe is arranged at the bottom of the waste gas scrubbing tower, and a purified gas discharge pipe is arranged at the top of the waste gas scrubbing tower. An online gas analysis instrument is arranged on the purified gas discharge pipe.
[0006] As preferred, the total pipeline is provided with a total pipeline suction fan.
[0007] As preferred, a lower middle part of the waste gas scrubbing tower is provided with a scrubbing water pump inlet pipeline, one end of the scrubbing water pump inlet pipeline is communicated with the waste gas scrubbing tower, the other end of the scrubbing water pump inlet pipeline is provided with a scrubbing water pump, and an outlet end of the scrubbing water pump is provided with a scrubbing water pump outlet pipeline.
[0008] More preferably, one end of the scrubbing water pump outlet pipeline is communicated with the outlet end of the scrubbing water pump, and the other end of the scrubbing water pump outlet pipeline is divided into two ways, one way is a venturi inlet pipeline, and the other way is a waste gas scrubbing tower inlet pipeline.
[0009] More preferably, one end of the venturi inlet pipeline is communicated with the scrubbing water pump outlet pipeline, the other end of the venturi inlet pipeline is communicated with a pipeline type venturi scrubber, and the venturi inlet pipeline is provided with a venturi flow regulating valve.
[0010] More preferably, one end of the waste gas scrubbing tower inlet pipeline is communicated with the scrubbing water pump outlet pipeline, the other end of the waste gas scrubbing tower inlet pipeline is communicated with the waste gas scrubbing tower, and the waste gas scrubbing tower inlet pipeline is communicated with the waste gas scrubbing tower at a position of an upper middle part of the waste gas scrubbing tower.
[0011] More preferably, the waste gas scrubbing tower inlet pipeline is provided with a tower tray flow regulating valve.
[0012] As preferred, a middle part of the waste gas scrubbing tower is provided with a waste gas scrubbing tower water supplement pipeline, and the waste gas scrubbing tower water supplement pipeline is provided with a waste gas scrubbing tower liquid level regulating valve.
[0013] As preferred, one end of the sulfur-containing liquid discharge pipeline is communicated with a bottom part of the waste gas scrubbing tower, the other end of the sulfur-containing liquid discharge pipeline is provided with a sulfur recovery device, and the sulfur-containing liquid discharge pipeline is provided with a sulfur-containing liquid discharge flow regulating valve and a liquid sulfur content on-line analyzer.
[0014] The gasification furnace slag exhaust gas treatment device has the following advantages:
[0015] (1) The utility model solves the problem that CO, H2S and other dust-containing gases exist in the slag fished out by the existing slag conveyor, the top and upper hot gas of the slag conveyor, and causes the on-site GDS alarm instrument to exceed the standard alarm, realizes waste gas recycling, is beneficial to environmental protection, and increases enterprise benefits of product sulfuric acid;
[0016] (ii) The utility model discloses set venturi flow regulating valve, tray flow regulating valve, waste gas scrubbing tower liquid level regulating valve, liquid sulfur content on -line analyzer, ensure that the degree of automation is high, set up emission gas on -line analyzer simultaneously, can real -time monitoring whether the emission gas reaches the standard, benefit from fundamentally protecting the atmospheric environment, and then improve the on -the -spot working environment, make various harmful material not exceed the professional health contact limit value, protect the health of staff member;
[0017] (iii) The utility model discloses in the slagging process of gasification furnace, the slag of slag machine, the CO of top and upper hot gas of slag machine, H2S and other over standard gas, through corresponding pipeline after the suction fan is sent to the main pipeline, then after the suction fan of main pipeline is sent to the pipeline type venturi scrubber, carries out the preliminary washing with the water of pipeline type venturi scrubber spray, and the small particle in wet dust exhaust gas becomes big particle, and it is favorable to the settlement, and the dust exhaust gas of going up after the dust exhaust gas of washing tower further washes after the water bath of washing tower lower part, and the waste gas is contacted with the counterflow of tray washing water again, and is washed further, and the gas of washing is completed, and the purified gas after the discharge gas on -line analyzer is analyzed and reaches the standard, and the purified gas is discharged through the purified gas discharge pipe, and the liquid after washing is analyzed through the sulfur content on -line analyzer, and when the concentration is too high and is not conducive to recycling, the liquid is sent to sulfur recovery equipment through sulfur liquid discharge pipe, and sulfuric acid is prepared, and for maintaining the washing effect of waste gas scrubbing tower, and the fresh water is supplemented through the washing tower water supplement pipeline, and the waste gas recycling is completed, and the atmospheric environment is protected.
[0018] Therefore, the utility model has the characteristics of reasonable design, simple structure, easy processing, small size, convenient use, one thing multiple uses and the like, and thus has good popularization and use value. BRIEF DESCRIPTION OF DRAWINGS
[0019] The utility model will be further explained below in connection with the drawings.
[0020] ATTACH Figure 1 It is a kind of gasification furnace slag exhaust gas treatment device's structural schematic diagram.
[0021] Figure: 1, the slag machine A, 2, the slag machine B, 3, the suction fan A, 4, the suction fan B, 5, the suction fan inlet pipe A, 6, the suction fan inlet pipe B, 7, the main pipe, 8, the suction fan outlet pipe A, 9, the suction fan outlet pipe B, 10, the main pipe suction fan, 11, the pipe type venturi scrubber, 12, the scrubbing water pump inlet pipe, 13, the waste gas scrubbing tower, 14, the scrubbing water pump, 15, the venturi inlet pipe, 16, the waste gas scrubbing tower inlet pipe, 17, the venturi flow regulating valve, 18, the tower tray flow regulating valve, 19, the purified gas discharge pipe, 20, the discharge gas on-line analyzer, 21, the sulfur-containing liquid discharge pipe, 22, the liquid sulfur content on-line analyzer, 23, the sulfur recovery device, 24, the waste gas scrubbing tower water supply pipe, 25, the waste gas scrubbing tower liquid level regulating valve, 26, the sulfur-containing liquid discharge flow regulating valve, 27, the scrubbing water pump outlet pipe. DETAILED DESCRIPTION
[0022] The gasification furnace slag exhaust gas treatment device of the present application will be described in detail below with reference to the accompanying drawings and specific examples.
[0023] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0024] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0025] Embodiment:
[0026] As shown in the accompanying drawings Figure 1The utility model provides a kind of gasification furnace slag exhaust gas treatment device, its structure includes drag-out machine A1, drag-out machine B 2, suction fan A 3, suction fan B 4, main pipeline 7 and exhaust gas washing tower 13, drag-out machine A1 is connected with the inlet end of suction fan A 3 by suction fan inlet pipe A 5, and suction fan A 3 is equipped with suction fan outlet pipe A 8 at outlet end;Drag-out machine B 2 is connected with the inlet end of suction fan B 4 by suction fan inlet pipe B 6, and suction fan B 4 is equipped with suction fan outlet pipe B 9 at outlet end, and suction fan outlet pipe B 9 and suction fan outlet pipe A8 are connected with one end of main pipeline 7 respectively, and the other end of main pipeline 7 is equipped with pipeline type venturi scrubber 11, and one end of pipeline type venturi scrubber 11 is connected with main pipeline 7, and the other end of pipeline type venturi scrubber 11 is located in the lower position of the middle of exhaust gas washing tower 13;Exhaust gas washing tower 13 bottom is equipped with sulfur-containing liquid discharge pipe 21, and exhaust gas washing tower 13 top is equipped with purified gas discharge pipe 19, and discharge gas on-line analyzer 20 is installed on purified gas discharge pipe 19.
[0027] The main pipeline 7 in the embodiment is equipped with main pipeline suction fan 10.
[0028] The lower position of the middle of exhaust gas washing tower 13 in the embodiment is equipped with washing water pump inlet pipe 12, and one end of washing water pump inlet pipe 12 is connected with exhaust gas washing tower 13, and the other end of washing water pump inlet pipe 12 is equipped with washing water pump 14, and the outlet end of washing water pump 14 is equipped with washing water pump outlet pipe 27.
[0029] One end of washing water pump outlet pipe 27 in the embodiment is connected with the outlet end of washing water pump 14, and the other end of washing water pump outlet pipe 27 is divided into two ways, one way is venturi inlet pipe 15, and the other way is exhaust gas washing tower inlet pipe 16.
[0030] One end of venturi inlet pipe 15 in the embodiment is connected with washing water pump outlet pipe 27, and the other end of venturi inlet pipe 15 is connected with pipeline type venturi scrubber 11, and venturi flow regulating valve 17 is installed on venturi inlet pipe 15.
[0031] One end of exhaust gas washing tower inlet pipe 16 in the embodiment is connected with washing water pump outlet pipe 27, and the other end of exhaust gas washing tower inlet pipe 16 is connected with exhaust gas washing tower 13, and exhaust gas washing tower inlet pipe 16 is connected with the upper position of the middle of exhaust gas washing tower 13 at exhaust gas washing tower 13, and tower tray flow regulating valve 18 is installed on exhaust gas washing tower inlet pipe 16.
[0032] The waste gas washing tower 13 in the embodiment is provided with a waste gas washing tower water supplement pipeline 24 at a middle position, and the waste gas washing tower water supplement pipeline 24 is provided with a waste gas washing tower liquid level adjusting valve 25.
[0033] The sulfur-containing liquid discharge pipeline 21 in the embodiment is connected to the bottom of the waste gas washing tower 13 at one end, and is provided with a sulfur recovery device 23 at the other end, and is provided with a sulfur-containing liquid discharge flow adjusting valve 26 and a liquid sulfur content on-line analyzer 22.
[0034] The working process of the embodiment is as follows: first, the waste gas washing tower water supplement pipeline 24 is used to establish the liquid level of the waste gas washing tower 13 by the waste gas washing tower liquid level adjusting valve 25; when the liquid level is normally established, the waste gas washing tower liquid level adjusting valve 25 is automatically put into operation, the washing water pump 14 is started, and the washing water is sent to the pipeline type venturi scrubber 11 through the venturi inlet pipeline 15 and the venturi flow adjusting valve 17; when the flow of the pipeline type venturi scrubber 11 is stable, the venturi flow adjusting valve 17 is automatically put into operation; the washing water is sent to the upper tray of the waste gas washing tower 13 through the waste gas washing tower inlet pipeline 16 and the tray flow adjusting valve 18; when the flow is stable, the tray flow adjusting valve 18 is automatically put into operation; and the washing water system is established.
[0035] When the two sets of gasifiers A and B are normally operated, the slag of the gasifier A is discharged into the slag extractor A1 through the lock hopper; the slag of the gasifier B is discharged into the slag extractor B2; the dust-containing hot gas generated by the slag discharge is sent to the total pipeline 7 through the induced draft fan inlet pipeline 5 and the induced draft fan inlet pipeline 6, the induced draft fan A3 and the induced draft fan B4, the induced draft fan outlet pipeline A8 and the induced draft fan outlet pipeline B9, and the total pipeline induced draft fan 10; the waste gas is preliminarily washed by the water sprayed by the pipeline type venturi scrubber 11 and the venturi flow adjusting valve 17 through the washing water pump inlet pipeline 12, and then enters the waste gas washing tower 13 to be washed, dusted and cooled in countercurrent contact with the water falling from the upper part of the tray; after the analysis of the CO / H2S / nitrogen oxides / dust content by the exhaust gas on-line analyzer 20, the purified gas is discharged into the atmosphere through the purified gas discharge pipeline 19. The washing water after the circulation is analyzed by the liquid sulfur content on-line analyzer 22, and when the sulfur content is high, the washing water is sent to the sulfur recovery device 23 through the sulfur-containing liquid discharge pipeline 21 and the sulfur-containing liquid discharge flow adjusting valve 26 to prepare sulfuric acid.
[0036] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A gasifier slag discharge waste gas treatment device, characterized in that, The system includes a slag remover A, a slag remover B, an induced draft fan A, an induced draft fan B, a main pipeline, and an exhaust gas scrubbing tower. Slag remover A is connected to the inlet end of the induced draft fan A via an inlet pipe A, and an outlet pipe A is provided at the outlet end of the induced draft fan A. Slag remover B is connected to the inlet end of the induced draft fan B via an inlet pipe B, and an outlet pipe B is provided at the outlet end of the induced draft fan B. Both the outlet pipe B and the outlet pipe A are connected to one end of the main pipeline. A pipeline-type Venturi scrubber is installed at the other end of the main pipeline, with one end connected to the main pipeline and the other end located in the lower middle part of the exhaust gas scrubbing tower. A sulfur-containing liquid discharge pipe is installed at the bottom of the exhaust gas scrubbing tower, and a purified gas discharge pipe is installed at the top of the exhaust gas scrubbing tower. An online gas analyzer is installed on the purified gas discharge pipe.
2. The gasifier slag discharge waste gas treatment device according to claim 1, characterized in that, A main duct exhaust fan is installed on the main duct.
3. The gasifier slag discharge waste gas treatment device according to claim 1, characterized in that, A washing water pump inlet pipe is located in the lower middle part of the exhaust gas scrubbing tower. One end of the washing water pump inlet pipe is connected to the exhaust gas scrubbing tower, and the other end of the washing water pump inlet pipe is equipped with a washing water pump. A washing water pump outlet pipe is located at the outlet end of the washing water pump.
4. The gasifier slag discharge waste gas treatment device according to claim 3, characterized in that, One end of the washing water pump outlet pipe is connected to the outlet end of the washing water pump, and the other end of the washing water pump outlet pipe is divided into two paths: one is the Venturi inlet pipe, and the other is the exhaust gas scrubbing tower inlet pipe.
5. The gasifier slag discharge waste gas treatment device according to claim 4, characterized in that, One end of the Venturi inlet pipe is connected to the outlet pipe of the washing water pump, and the other end of the Venturi inlet pipe is connected to the pipeline Venturi washer. A Venturi flow regulating valve is installed on the Venturi inlet pipe.
6. The gasifier slag discharge waste gas treatment device according to claim 4, characterized in that, One end of the inlet pipe of the exhaust gas scrubbing tower is connected to the outlet pipe of the scrubbing water pump, and the other end of the inlet pipe of the exhaust gas scrubbing tower is connected to the exhaust gas scrubbing tower. The connection between the inlet pipe of the exhaust gas scrubbing tower and the exhaust gas scrubbing tower is located in the upper middle part of the exhaust gas scrubbing tower.
7. The gasifier slag discharge waste gas treatment device according to claim 6, characterized in that, The inlet pipe of the exhaust gas scrubbing tower is equipped with a tray flow regulating valve.
8. The gasifier slag discharge waste gas treatment device according to claim 1, characterized in that, A water supply pipe for the waste gas scrubbing tower is installed in the middle of the waste gas scrubbing tower, and a liquid level regulating valve for the waste gas scrubbing tower is installed on the water supply pipe.
9. The gasifier slag discharge waste gas treatment device according to claim 1, characterized in that, One end of the sulfur-containing liquid discharge pipe is connected to the bottom of the waste gas scrubbing tower, and the other end of the sulfur-containing liquid discharge pipe is equipped with a sulfur recovery device. The sulfur-containing liquid discharge flow regulating valve and the online liquid sulfur content analyzer are installed on the sulfur-containing liquid discharge pipe.