Gas recycling device
By designing a gas recovery and reuse device, using technical means of buffer pipe storage and torch combustion and venting, the problem of gas waste in fixed bed pressurized gasifiers is solved, and the reuse of effective gas is achieved, reducing costs and increasing product volume.
Patent Information
- Application Number
- CN202421797944.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-29
AI Technical Summary
During the coal addition process of a fixed-bed pressurized gasifier, the effective gases (such as carbon monoxide, hydrogen, methane, etc.) that are suppressed by the coal lock are directly discharged into the torch to burn, resulting in gas waste.
A gas recovery and reuse device is designed. Through the cylinder valve and upper valve arranged outside the coal lock, the coal lock gas leaks into the buffer pipe for storage, and the gas leaks to the torch combustion and vents through the second pressure valve. The gas from the buffer pipe is used to charge and pressure the coal lock to reduce the waste of effective gas exhaust combustion.
It effectively reduces the waste of exhaust combustion of effective gases, reduces material costs, and increases product volume.
Smart Images
Figure CN222877879U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas recovery, in particular to a gas recovery and reuse device. Background Art
[0002] At present, the coal adding process of the domestic fixed-bed pressurized gasifier is an intermittent operation, that is, the crushed coal is first added to the normal pressure coal lock, and then the coal lock is pressurized to the same pressure as the gasifier, and the coal in the coal lock is added to the gasifier. After the coal adding is completed, the coal lock is vented to normal pressure and then coal is added to the coal lock.
[0003] Now the coal lock pressure relief gas (carbon monoxide, hydrogen, carbon dioxide, methane, etc., among which carbon monoxide, hydrogen and methane are effective gases) is directly discharged into the flare and burns wastefully; the annual effective gas combustion is 24.114-34.45 million Nm3; resulting in waste of effective gases such as carbon monoxide, hydrogen and methane. Utility Model Content
[0004] The purpose of the utility model is to provide a gas recovery and reuse device to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas recovery and reuse device, including a coal lock, and also including: a cylindrical valve and an upper valve arranged on the outside of the coal lock, a feeding hopper is arranged on the outside of the coal lock; an exhaust pipe is arranged on the outside of the coal lock, a buffer part and a pressure relief part for pressure relief are arranged on the outside of the exhaust pipe, a torch is arranged on the outside of the pressure relief part, and a support part is arranged on the outside of the buffer part.
[0006] Preferably, the buffer member includes a first air pipe fixedly connected to the outside of the exhaust pipe, a first pressure valve is arranged on the outside of the first air pipe, and a buffer pipe is arranged on the outside of the first air pipe.
[0007] Preferably, the pressure relief component comprises a second gas pipe fixedly connected to the outside of the exhaust pipe, a second pressure valve is arranged on the outside of the second gas pipe, and a torch is arranged on the outside of the second gas pipe.
[0008] Preferably, the support member includes a support frame arranged at the bottom of the buffer tube, the top of the support frame is fixedly connected to a bottom clamping ring, the top of the support frame is fixedly connected to a fixing frame, a suspension rope is arranged inside the fixing frame, and the outer side of the suspension rope is fixedly connected to a top clamping ring.
[0009] Preferably, a pulley is provided on the outer side of the fixing frame, and the suspension rope is provided on the outer side of the pulley.
[0010] Preferably, a connecting pipe is fixedly connected to the outer side of the buffer pipe, and two ends of the connecting pipe are respectively fixedly connected to a water inlet pipe and a spray pipe.
[0011] Preferably, a sewage pipe is fixedly connected to the bottom of the buffer tube.
[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0013] The utility model starts to release pressure through the first pressure valve, and the coal lock gas is released into the buffer tube for storage. Through the second pressure valve, the coal lock gas is released to the torch for combustion and venting. The pressure is released to normal pressure, and the coal lock is pressurized with the gas in the buffer tube through the first pressure valve. By adding the buffer tube, the waste of effective gas exhaust combustion is effectively reduced, the material cost is reduced, and the product volume is increased. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the utility model;
[0015] Figure 2 This is a schematic diagram of the structure of the support member of the utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the spray pipe of the utility model;
[0017] Figure 4 It is a schematic diagram of the structure of the first gas pipeline and the second gas pipeline of the utility model.
[0018] In the figure: 1. coal lock; 2. cylinder valve; 3. upper valve; 4. hopper; 5. exhaust pipe; 6. buffer; 601. first gas pipeline; 602. first pressure valve; 603. buffer pipe; 7. pressure relief part; 701. second gas pipeline; 702. second pressure valve; 8. torch; 9. support; 901. support frame; 902. fixing frame; 903. bottom clamp; 904. top clamp; 905. lifting rope; 906. pulley; 10. connecting pipe; 11. spray pipe; 12. water inlet pipe; 13. sewage pipe. DETAILED DESCRIPTION
[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.
[0020] See also Figure 1-4 As shown, a gas recovery and reuse device includes a coal lock 1, and also includes: a cylindrical valve 2 and an upper valve 3 arranged on the outside of the coal lock 1, a charging hopper 4 is arranged on the outside of the coal lock 1; an exhaust pipe 5 is arranged on the outside of the coal lock 1, a buffer member 6 and a pressure relief member 7 for pressure relief are arranged on the outside of the exhaust pipe 5, a torch 8 is arranged on the outside of the pressure relief member 7, and a support member 9 is arranged on the outside of the buffer member 6.
[0021] like Figure 1and Figure 4 As shown, the buffer 6 includes a first gas pipe 601 fixedly connected to the outside of the exhaust pipe 5, a first pressure valve 602 is arranged on the outside of the first gas pipe 601, and a buffer pipe 603 is arranged on the outside of the first gas pipe 601. When the coal lock 1 is empty or the material level is low, the coal lock 1 opens the first pressure valve 602 to start pressure relief, and the gas is released into the buffer pipe 603 through the first gas pipe 601 for storage.
[0022] like Figure 1 and Figure 4 As shown, the pressure relief member 7 includes a second gas pipe 701 fixedly connected to the outside of the exhaust pipe 5, a second pressure valve 702 is arranged outside the second gas pipe 701, and a flare 8 is arranged outside the second gas pipe 701. The pressure of the coal lock 1 is released to about 2.5MPa, and the pressure difference between the coal lock 1 and the buffer pipe 603 is 200-300KPa. The first pressure valve 602 is closed, and the second pressure valve 702 is opened to release the gas to the flare 8 through the second gas pipe 701 for combustion and venting.
[0023] like Figure 1 and Figure 2 As shown, the support member 9 includes a support frame 901 arranged at the bottom of the buffer tube 603, the top of the support frame 901 is fixedly connected with a bottom clamping ring 903, the top of the support frame 901 is fixedly connected with a fixing frame 902, the interior of the fixing frame 902 is provided with a suspension rope 905, the outer side of the suspension rope 905 is fixedly connected with a top clamping ring 904; the outer side of the fixing frame 902 is provided with a pulley 906, and the suspension rope 905 is provided on the outer side of the pulley 906. The buffer tube 603 is placed on the upper part of the bottom clamping ring 903, and then the top clamping ring 904 is clamped onto the bottom clamping ring 903, and the top clamping ring 904 and the bottom clamping ring 903 are connected and fixed together by fixing bolts, so that the buffer tube 603 is installed and fixed on the support frame 901. When removing the buffer tube 603, the connecting bolts between the top clamping ring 904 and the bottom clamping ring 903 are removed, and the lifting rope 905 is pulled to move on the outside of the pulley 906 to drive the top clamping ring 904 to move upward and separate from the bottom clamping ring 903, thereby loosening the buffer tube 603 for easy removal.
[0024] like Figure 1 and Figure 3 As shown, the outer side of the buffer tube 603 is fixedly connected with a connecting tube 10, and the two ends of the connecting tube 10 are respectively fixedly connected with a water inlet pipe 12 and a spray pipe 11; the bottom of the buffer tube 603 is fixedly connected with a sewage pipe 13. When the buffer tube 603 needs to be cleaned after use, water is transported to the spray pipe 11 through the water inlet pipe 12, and the spray pipe 11 is provided with spray holes around it, so as to flush the inner wall of the buffer tube 603, and the waste water after flushing is discharged through the sewage pipe 13, and the sewage pipe 13 is closed when not in use.
[0025] Working principle: When coal lock 1 is empty or low material level comes out, open the first pressure valve 602 to start pressure relief, coal lock gas is released to buffer pipe 603 for storage, coal lock 1 pressure is released to about 2.5MPa, the pressure difference between coal lock 1 and buffer pipe 603 is 200-300KPa, close the first pressure valve 602, open the second pressure valve 702, coal lock gas is released to flare 8 for combustion and venting, pressure relief to normal pressure, open coal lock 1 upper valve 3 and cylinder valve 2 to add coal, when coal lock 1 is full or high material level comes out, close coal lock 1 cylinder valve 2 and upper valve 3 ; Coal lock 1 opens the first pressure valve 602 (charging and pressure relief share a valve) and uses the gas in the buffer pipe 603 to pressurize the coal lock 1 to about 2.5MPa. The pressure difference between the coal lock 1 pressure and the buffer section is 200-300KPa. The first pressure valve 602 is opened for pressurization. The pressure is charged to 50Kpa higher than the gasifier pressure. The first pressure valve 602 is closed, and the second pressure valve 702 is opened for pressure equalization. When the pressure of coal lock 1 is the same as that of the gasifier, the second pressure valve 702 is closed, and the lower valve of coal lock 1 is opened to add coal into the gasifier.
[0026] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A gas recovery and recycling device, comprising a coal lock (1), characterized in that: Also includes: A cylindrical valve (2) and an upper valve (3) are arranged on the outside of a coal lock (1), and a charging hopper (4) is arranged on the outside of the coal lock (1); An exhaust pipe (5) is arranged outside the coal lock (1), and a buffer member (6) and a pressure relief member (7) for pressure relief are arranged outside the exhaust pipe (5), a torch (8) is arranged outside the pressure relief member (7), and a support member (9) is arranged outside the buffer member (6).
2. A gas recovery and recycling device according to claim 1, characterized in that: The buffer component (6) comprises a first air supply pipe (601) fixedly connected to the outside of the exhaust pipe (5), a first pressure valve (602) is arranged on the outside of the first air supply pipe (601), and a buffer pipe (603) is arranged on the outside of the first air supply pipe (601).
3. A gas recovery and recycling device according to claim 1, characterized in that: The pressure relief component (7) comprises a second gas pipe (701) fixedly connected to the outside of the exhaust pipe (5), a second pressure valve (702) is arranged on the outside of the second gas pipe (701), and a torch (8) is arranged on the outside of the second gas pipe (701).
4. A gas recovery and recycling device according to claim 2, characterized in that: The support member (9) comprises a support frame (901) arranged at the bottom of the buffer tube (603), the top of the support frame (901) is fixedly connected to a bottom clamping ring (903), the top of the support frame (901) is fixedly connected to a fixing frame (902), a suspension rope (905) is arranged inside the fixing frame (902), and the outer side of the suspension rope (905) is fixedly connected to a top clamping ring (904).
5. A gas recovery and recycling device according to claim 4, characterized in that: A pulley (906) is arranged on the outer side of the fixing frame (902), and the suspension rope (905) is arranged on the outer side of the pulley (906).
6. A gas recovery and recycling device according to claim 2, characterized in that: The outer side of the buffer tube (603) is fixedly connected to a connecting tube (10), and the two ends of the connecting tube (10) are respectively fixedly connected to a water inlet pipe (12) and a spray pipe (11).
7. A gas recovery and recycling device according to claim 2, characterized in that: The bottom of the buffer tube (603) is fixedly connected to a sewage discharge pipe (13).