Gasification slag coupling blending combustion system
Through the gasification slag coupling and burning system, the gasification slag is transported to the coal-fired power plant for mixed and burning, solving the problems of land occupation and environmental pollution caused by the slag yard landfill method, and achieving efficient and harmless treatment and resource utilization.
Patent Information
- Application Number
- CN202422101036.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-08-28
AI Technical Summary
In the prior art, the treatment of gasification slag mainly uses the slag yard landfill method, which leads to land resource occupation and environmental pollution problems.
A gasification slag coupling and burning system is designed, including a slag silo, a pre-pressed screw feeder and a plunger pump. The processed gasification slag is transported to the raw coal belt of a coal-fired power plant for homogenous coupling and burning.
It realizes efficient and harmless treatment of gasified slag, has high resource utilization rate, reduces pollution and reduces treatment costs.
Smart Images
Figure CN223121455U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gasification slag treatment, and particularly relates to a gasification slag coupled co-combustion system. Background Art
[0002] Gasification slag is the residue of pulverized coal that has not been completely burned after passing through high temperature during the coal gasification process. At present, with the development of the coal chemical industry, the treatment of gasification slag generated during the coal gasification process has gradually become a new solid waste treatment problem. The currently commonly used treatment method for gasification slag is still the landfill method in a slag yard. When using the landfill method in a slag yard to treat gasification slag, a large amount of piled-up gasification slag will not only occupy a large amount of land resources, but also cause pollution to the surrounding soil, water, and air after long-term accumulation.
[0003] Therefore, there is an urgent need for a gasification slag coupled co-combustion system to solve the above problems. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the problem that in the prior art, when treating gasification slag, the landfill method in a slag yard is usually adopted, and a large amount of piled-up gasification slag will not only occupy a large amount of land resources, but also cause pollution to the surrounding soil, water, and air after long-term accumulation. A gasification slag coupled co-combustion system is provided to achieve efficient and harmless treatment of gasification slag.
[0005] The technical solution of the utility model is as follows:
[0006] A gasification slag coupled co-combustion system includes a slag bin, a preloading screw feeder, a plunger pump, and a feeding pipeline;
[0007] The feeding port of the preloading screw feeder is connected to the discharging port at the bottom of the slag bin, and the discharging port is connected to the feeding port of the plunger pump. The plunger pump transports the gasification slag processed by the preloading screw feeder to the raw coal belt of a coal-fired power plant through the feeding pipeline.
[0008] Preferably, an electric control valve is arranged at one end of the feeding pipeline away from the plunger pump.
[0009] Preferably, the plunger pump is an S-type swing plunger pump.
[0010] Preferably, an automatic bin cover is arranged at the feeding port at the top of the slag bin, and the automatic bin cover is driven by hydraulic pressure or an electric motor.
[0011] Preferably, a material loosening device is further included. The material loosening device includes a material loosening rotating shaft extending horizontally into the slag bin and a driving motor arranged outside the slag bin for driving the material loosening rotating shaft.
[0012] Preferably, a number of spiral blades are evenly distributed on the loose material rotating shaft.
[0013] Preferably, a gate valve driven by hydraulic pressure is connected between the discharge port of the pre-pressure screw feeder and the feed port of the plunger pump.
[0014] Preferably, a pipeline flushing device is further included. The pipeline flushing device includes a backwashing pump and a backwashing pipeline connected to the output port of the backwashing pump. The flushing end of the backwashing pipeline is communicated with the material conveying pipeline.
[0015] Preferably, a return pipeline is further included. One end of the return pipeline is communicated with the inside of the slag bin, and the other end is communicated with the material conveying pipeline. A second electric gate valve is arranged on the return pipeline.
[0016] Preferably, a first electric gate valve is arranged on the material conveying pipeline.
[0017] According to the above technical solution, based on the gasification slag coupling co-firing system, the storage and discharging of gasification slag can be realized by setting up a slag bin. Further treatment of the gasification slag can be achieved by setting up a pre-pressure screw feeder, and the treated gasification slag can be transported to the raw coal belt of a coal-fired power plant through a material conveying pipeline by setting up a plunger pump to realize uniform mixing and coupling co-firing, so as to realize the efficient and harmless treatment of gasification slag. Description of the Drawings
[0018] Figure 1 is a schematic structural diagram of the gasification slag coupling co-firing system.
[0019] Description of the Reference Numerals
[0020] 1. Automatic bin cover; 2. Slag bin; 3. Pre-pressure screw feeder; 4. Gate valve; 5. Hydraulic station; 6. Plunger pump; 7. First electric gate valve; 8. Second electric gate valve; 9. Return pipeline; 10. Material conveying pipeline; 11. Backwashing pump; 12. Backwashing pipeline; 13. Electric control valve. Detailed Description of the Embodiment
[0021] The following will detail the specific implementation manners of the embodiments of the present invention. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention.
[0022] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating relative importance or implicitly specifying the quantity of the indicated technical features. Thus, unless otherwise stated, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; the meaning of "a plurality" is two or more. The term "comprising" and any variation thereof mean an inclusive inclusion, and it is possible to have or add one or more other features, units, components, and / or combinations thereof without exclusion.
[0023] In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, or it may be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0024] The present utility model provides a gasification slag coupled co-combustion system, as Figure 1 shown. The gasification slag coupled co-combustion system includes a slag bin 2, a pre-pressure screw feeder 3, a plunger pump 6, and a feeding pipeline 10;
[0025] The feeding port of the pre-pressure screw feeder 3 is connected to the discharging port at the bottom of the slag bin 2, and the discharging port is connected to the feeding port of the plunger pump 6. The plunger pump 6 transports the gasification slag processed by the pre-pressure screw feeder 3 to the raw coal belt of a coal-fired power plant through the feeding pipeline 10.
[0026] According to the above technical solution, based on the gasification slag coupled co-combustion system, the storage and discharging of gasification slag can be realized by setting up a slag bin, and the gasification slag can be further processed by setting up a pre-pressure screw feeder. By setting up a plunger pump, the processed gasification slag can be transported to the raw coal belt of a coal-fired power plant through a feeding pipeline to achieve the uniform mixing and coupling co-combustion of the processed gasification slag and raw coal, thereby realizing the efficient and harmless treatment of gasification slag, and having the advantages of high resource utilization rate, less pollution, and cost savings for treatment.
[0027] In the gasification slag coupled co-combustion system of the present utility model, preferably, an electric control valve 13 is provided at one end of the feeding pipeline 10 far from the plunger pump. Thus, in actual application, the electric control valve 13 can be used in cooperation with the plunger pump 6 by adjusting the valve opening degree to adjust the output amount of the processed gasification slag, so as to better realize the uniform mixing and coupling co-combustion of gasification slag and raw coal, and avoid the output amount of the processed gasification slag being too much or too little, which affects the effect of coupling co-combustion.
[0028] In the gasification slag coupled co-firing system of the present utility model, preferably, the plunger pump 6 is an S-type swing plunger pump, so as to better convey the gasification slag after being processed by the pre-pressure screw feeder 3 to the raw coal belt of the coal-fired power plant. In a specific embodiment, the plunger pump 6 is powered by a hydraulic station 5.
[0029] In the gasification slag coupled co-firing system of the present utility model, preferably, an automatic bin cover 1 is provided at the feed inlet on the top of the slag bin 2, and the automatic bin cover 1 is driven by hydraulic pressure or an electric motor. By providing the automatic bin cover 1 at the top of the slag bin 2, the automation degree of feeding can be effectively improved, so that the automatic bin cover 1 can be quickly opened or closed at any time as needed during actual application. The automatic bin cover 1 is preferably driven by hydraulic pressure, so that while the hydraulic station 5 provides power for the plunger pump 6, it can also provide power for the opening or closing of the automatic bin cover 1. In a specific embodiment, the volume of the slag bin 2 is usually the gasification slag load of 4-5 trucks. More specifically, the volume of the slag bin 2 is 80m 3 , where the bulk density of the gasification slag is 1.1t / m 3 -1.3t / m 3 . In another specific embodiment, the slag bin 2 is arranged below the horizontal ground, so as to facilitate storing the gasification slag on the transfer truck into the slag bin 2.
[0030] In the gasification slag coupled co-firing system of the present utility model, preferably, a material loosening device is further included. The material loosening device includes a material loosening rotating shaft extending horizontally into the slag bin 2 and a driving motor arranged outside the slag bin 2 for driving the material loosening rotating shaft, so as to facilitate unloading the gasification slag in the slag bin 2 into the pre-pressure screw feeder 3 for processing. Further preferably, a plurality of spiral blades are evenly arranged on the material loosening rotating shaft, so as to enable the gasification slag in the slag bin 2 to be unloaded into the pre-pressure screw feeder 3 faster. In a specific embodiment, the discharge port at the bottom of the slag bin 2 and the feed port of the pre-pressure screw feeder 3 are arranged vertically opposite to each other and are connected by a pipeline.
[0031] In the gasification slag coupled co-firing system of the present utility model, preferably, the discharge port of the pre-pressure screw feeder 3 and the feed port of the plunger pump 6 are connected by a gate valve 4 driven by hydraulic pressure. By providing the gate valve 4, the sealing performance between the discharge port of the pre-pressure screw feeder 3 and the feed port of the plunger pump 6 can be effectively improved, and it is convenient for the overhaul and maintenance of the plunger pump 6. Preferably, the gate valve 4 is provided with power for opening or closing by the hydraulic station 5.
[0032] In the gasification slag coupling co - firing system of the present utility model, preferably, it further includes a pipeline flushing device. The pipeline flushing device includes a back - flushing pump 11 and a back - flushing pipeline 12 connected to the output port of the back - flushing pump 11. The flushing end of the back - flushing pipeline 12 is communicated with the feeding pipeline 10. Preferably, the flushing end of the back - flushing pipeline 12 is communicated with the feeding pipeline 10 through a third electric gate valve, so that when the pipeline does not need to be flushed, the valve can be closed to prevent the gasification slag output by the plunger pump 6 from entering the back - flushing pipeline 12 and causing blockage.
[0033] Further preferably, a first electric gate valve 7 is arranged on the feeding pipeline 10.
[0034] Further preferably, it further includes a return pipeline 9. One end of the return pipeline 9 is communicated with the inside of the slag bin 2, and the other end is communicated with the feeding pipeline 10. A second electric gate valve 8 is arranged on the return pipeline 9.
[0035] In actual application, when it is necessary to transport the gasification slag to the raw coal belt of a coal - fired power plant for uniform mixing and coupling co - firing, the first electric gate valve 7 and the electric control valve 13 are opened, and the second electric gate valve 8 and the third electric gate valve are closed, so that the gasification slag in the slag bin 2 enters the pre - pressing screw feeder 3. Then, the gasification slag processed by the pre - pressing screw feeder 3 enters the plunger pump 6. Then, the plunger pump 6 transports the gasification slag processed by the pre - pressing screw feeder 3 to the raw coal belt of the coal - fired power plant through the feeding pipeline 10 for uniform mixing and coupling co - firing. When it is not necessary to transport the gasification slag to the raw coal belt of the coal - fired power plant for uniform mixing and coupling co - firing for a long time, the first electric gate valve 7 and the electric control valve 13 are closed, the second electric gate valve 8 and the third electric gate valve are opened, and the back - flushing pump 11 is started to clean the feeding pipeline 10 with flushing water, and the residual material in the feeding pipeline 10 enters the slag bin 2 through the return pipeline 9 to wait for secondary treatment.
[0036] The present utility model will be described in detail below through embodiments, but the protection scope of the present utility model is not limited thereto.
[0037] Embodiment 1
[0038] Adopt the gasification slag coupling co - firing system as Figure 1 shown for the treatment of gasification slag. Specifically, the gasification slag coupling co - firing system includes a slag bin 2, a pre - pressing screw feeder 3, a plunger pump 6 and a feeding pipeline 10;
[0039] The feed inlet of the preloading screw feeder 3 is connected to the discharge outlet at the bottom of the slag bin 2, and the discharge outlet is connected to the feed inlet of the plunger pump 6. The plunger pump 6 transports the gasified slag processed by the preloading screw feeder 3 to the raw coal belt of a coal-fired power plant through the material conveying pipeline 10;
[0040] An electric control valve 13 is provided at one end of the material conveying pipeline 10 away from the plunger pump; the plunger pump 6 is an S-type swing plunger pump; an automatic bin cover 1 is provided at the feed inlet at the top of the slag bin 2, and the automatic bin cover 1 is hydraulically driven; a gate valve 4 driven by hydraulic pressure is connected between the discharge outlet of the preloading screw feeder 3 and the feed inlet of the plunger pump 6.
[0041] In actual application, when it is necessary to transport the gasified slag to the raw coal belt of a coal-fired power plant for uniform mixing and coupling co-firing, the electric control valve 13 is opened to enable the gasified slag in the slag bin 2 to enter the preloading screw feeder 3. Then, the gasified slag processed by the preloading screw feeder 3 enters the S-type swing plunger pump. Then, the S-type swing plunger pump transports the gasified slag processed by the preloading screw feeder 3 to the raw coal belt of the coal-fired power plant through the material conveying pipeline 10 for uniform mixing and coupling co-firing.
[0042] After testing, by using the gasified slag coupling co-firing system of the present utility model, compared with the existing technology of landfill in a slag yard, it can achieve efficient and harmless treatment of gasified slag, and has the advantages of high resource utilization rate, less pollution and cost savings in treatment.
[0043] Embodiment 2
[0044] Implemented with reference to Embodiment 1, the difference is that it further includes a pipeline flushing device. The pipeline flushing device includes a backwashing pump 11 and a backwashing pipeline 12 connected to the output port of the backwashing pump 11. The flushing end of the backwashing pipeline 12 is communicated with the material conveying pipeline 10 through a third electric gate valve; a first electric gate valve 7 is provided on the material conveying pipeline 10; it further includes a return pipeline 9. One end of the return pipeline 9 is communicated with the inside of the slag bin 2, and the other end is communicated with the material conveying pipeline 10. A second electric gate valve 8 is provided on the return pipeline 9.
[0045] In actual application, when it is necessary to transport the gasified slag to the raw coal conveyor belt of a coal-fired power plant for uniform mixing and coupling co-firing, the first electric gate valve 7 and the electric regulating valve 13 are opened, and the second electric gate valve 8 and the third electric gate valve are closed, so that the gasified slag in the slag bin 2 enters the pre-pressure screw feeder 3. Then, the gasified slag processed by the pre-pressure screw feeder 3 enters the S-swing plunger pump. Then, the S-swing plunger pump transports the gasified slag processed by the pre-pressure screw feeder 3 to the raw coal conveyor belt of the coal-fired power plant through the material conveying pipeline 10 for uniform mixing and coupling co-firing. When it is not necessary to transport the gasified slag to the raw coal conveyor belt of the coal-fired power plant for uniform mixing and coupling co-firing for a long time, the first electric gate valve 7 and the electric regulating valve 13 are closed, the second electric gate valve 8 and the third electric gate valve are opened, and the backwashing pump 11 is started to clean the material conveying pipeline 10 with washing water, and the residual material in the material conveying pipeline 10 enters the slag bin 2 through the return pipeline 9 to wait for secondary treatment.
[0046] It is detected that by using the gasified slag coupling co-firing system described in the present invention, compared with the scheme in Embodiment 1, the treatment efficiency of the gasified slag can be further improved, and the blockage of the material conveying pipeline can be avoided.
[0047] Embodiment 3
[0048] Implemented with reference to Embodiment 2, the difference is that it further includes a material loosening device. The material loosening device includes a material loosening rotating shaft extending horizontally into the slag bin 2 and a driving motor arranged outside the slag bin 2 for driving the material loosening rotating shaft; a plurality of spiral blades are uniformly arranged on the material loosening rotating shaft.
[0049] It is detected that by using the gasified slag coupling co-firing system described in the present invention, compared with the scheme in Embodiment 2, the treatment efficiency of the gasified slag can be further improved.
[0050] The gasified slag coupling co-firing system provided by the present invention can realize the storage and discharging of the gasified slag by setting the slag bin, and can further process the gasified slag by setting the pre-pressure screw feeder, and can transport the processed gasified slag to the raw coal conveyor belt of the coal-fired power plant through the plunger pump through the material conveying pipeline to realize uniform mixing and coupling co-firing, so as to realize the efficient and harmless treatment of the gasified slag.
[0051] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention. To avoid unnecessary repetition, the present invention will not separately describe various possible combinations. But these simple modifications and combinations should also be regarded as the content disclosed by the present invention and all fall within the protection scope of the present invention.
Claims
1. A gasification slag coupled co-firing system, characterized in that, The gasification slag coupled co-firing system includes a slag bin (2), a preloading screw feeder (3), a piston pump (6) and a feeding pipeline (10); The feeding port of the preloading screw feeder (3) is connected to the discharging port at the bottom of the slag bin (2), and the discharging port is connected to the feeding port of the piston pump (6). The piston pump (6) transports the gasification slag processed by the preloading screw feeder (3) to the raw coal belt of a coal-fired power plant through the feeding pipeline (10).
2. The gasification slag coupled co-firing system according to claim 1, wherein An electric control valve (13) is provided at one end of the feeding pipeline (10) away from the piston pump.
3. The gasification slag coupled co-firing system according to claim 1, characterized in that, The piston pump (6) is an S-type piston pump.
4. The gasification slag coupling co-firing system according to claim 1, wherein An automatic bin cover (1) is provided at the feeding port at the top of the slag bin (2), and the automatic bin cover (1) is hydraulically driven or motor-driven.
5. The gasification slag coupling co-firing system according to claim 1, wherein It further includes a material loosening device, which includes a material loosening rotating shaft extending horizontally into the slag bin (2) and a driving motor provided outside the slag bin (2) for driving the material loosening rotating shaft.
6. The gasification slag coupled co-firing system according to claim 5, wherein, A plurality of spiral blades are evenly arranged on the material loosening rotating shaft.
7. The gasification slag coupled co-firing system according to claim 1, characterized in that, The discharging port of the preloading screw feeder (3) and the feeding port of the piston pump (6) are connected through a gate valve (4) driven by hydraulic pressure.
8. The gasification slag coupled co-combustion system according to claim 1, wherein It further includes a pipeline flushing device, which includes a backwashing pump (11) and a backwashing pipeline (12) connected to the output port of the backwashing pump (11). The flushing end of the backwashing pipeline (12) is communicated with the feeding pipeline (10).
9. The gasification slag coupling co-firing system according to claim 8, wherein It further includes a return pipeline (9). One end of the return pipeline (9) is communicated with the inside of the slag bin (2), and the other end is communicated with the feeding pipeline (10). A second electric gate valve (8) is provided on the return pipeline (9).
10. The gasification slag coupled co-combustion system according to claim 8 or 9, characterized in that A first electric gate valve (7) is provided on the feeding pipeline (10).