Oily sludge integrated pyrolysis treatment system

Abstract

The utility model discloses an oily sludge integrated pyrolysis treatment system which comprises a pyrolysis outer furnace and a pyrolysis inner furnace fixedly arranged in the pyrolysis outer furnace, a bottom bracket is fixedly arranged at the bottom of the inner wall of the pyrolysis outer furnace, and a heating mechanism is fixedly mounted on the bottom bracket; the top end of the pyrolysis outer furnace is fixedly provided with a stirring mechanism for fully heating the oily sludge, one side of the top end of the pyrolysis inner furnace is fixedly communicated with a pyrolysis gas guide pipe, and one end of the pyrolysis gas guide pipe is fixedly provided with a purifier. According to the integrated pyrolysis treatment system for the oily sludge, the improved heating mechanism is adopted, pyrolysis gas generated by pyrolysis is directly guided into the spray combustion assembly to be directly combusted together with liquefied gas, on one hand, the use amount of the liquefied gas in the pyrolysis process can be reduced, more energy is saved, on the other hand, the pyrolysis gas does not need to be condensed and recycled, and the cost is reduced. And the complexity and difficulty of the pyrolysis process are reduced, the safety is higher, and more energy-saving and environment-friendly effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of oily sludge treatment, in particular to an integrated pyrolysis treatment system for oily sludge. Background Art

[0002] The generation of oily sludge is an inevitable pollution problem in the petroleum industry. Oily sludge is the oil sludge and oil tank sludge formed by the mixing of oil, water and ground soil during the production and refining of oil and gas fields. Its composition is very complex and contains a large amount of aged crude oil, suspended solids, bacterial waste and other solid wastes, of which crude oil is the main component. At present, the integrated pyrolysis treatment method of oily sludge is mainly to pyrolyze the sludge in a pyrolysis furnace, and the pyrolysis gas produced by the pyrolysis is condensed and recovered. The pyrolysis furnace is heated by liquefied gas or electricity. The above common types of integrated pyrolysis treatment equipment for oily sludge still have the following shortcomings in actual applications:

[0003] The main components of the pyrolysis gas produced during the pyrolysis process are H2, CO2, CO, CH4, C2H6, C2H4, C3H8 and C3H6. The pyrolysis gas is recovered after condensation. The recovery process is difficult and the processing system is complex. The energy consumption during the pyrolysis process is high, which is not energy-saving and environmentally friendly. Utility Model Content

[0004] The utility model aims to provide an integrated pyrolysis treatment system for oily sludge, so as to solve the problems of high energy consumption and poor energy conservation and environmental protection in the pyrolysis treatment process of the traditional pyrolysis treatment system proposed in the above background technology.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: an integrated pyrolysis treatment system for oily sludge, comprising a pyrolysis outer furnace and a pyrolysis inner furnace fixedly arranged inside the pyrolysis outer furnace, a bottom support frame fixedly arranged at the bottom of the inner wall of the pyrolysis outer furnace, a heating mechanism fixedly installed on the bottom support frame, a stirring mechanism for fully heating the oily sludge fixedly installed at the top of the pyrolysis outer furnace, a pyrolysis gas duct fixedly connected to one side of the top of the pyrolysis inner furnace, a purifier fixedly installed at one end of the pyrolysis gas duct, a tail gas exhaust pipe fixedly connected to one side of the top of the pyrolysis outer furnace, a tail gas purification mechanism for combustion tail gas treatment fixedly installed at one end of the tail gas exhaust pipe, a spray mechanism fixedly installed on one side of the tail gas purification mechanism, and a sludge addition port extending to the pyrolysis inner furnace fixedly arranged on the other side of the top of the pyrolysis outer furnace.

[0006] Preferably, a controller is fixedly mounted on the outside of the purifier, a control panel is fixedly mounted on the surface of the controller, a power switch is fixedly mounted on the surface of the control panel, and the controller is electrically connected to an external power supply via the power switch.

[0007] Preferably, the heating mechanism includes an outer ring tube and an inner ring tube arranged on the inner side of the outer ring tube, the bottom of the outer ring tube is fixedly connected to a liquefied gas input pipe extending to the outside of the pyrolysis outer furnace, the middle of the liquefied gas input pipe is fixedly installed with an electromagnetic flow regulating valve, the bottom of the inner ring tube is fixedly connected to a flow pipe, the middle of the flow pipe is fixedly installed with a flow monitoring meter, the top end of the flow pipe passes through the pyrolysis outer furnace and is fixedly installed at the gas outlet of the purifier, and a plurality of spraying components are fixedly installed between the outer ring tube and the inner ring tube.

[0008] Preferably, the spraying assembly includes a tee and an electromagnetic ignition burner fixedly mounted on the top of the tee, and both ends of the tee are fixedly mounted with reverse pipe joints, one of the reverse pipe joints is fixedly mounted on the inner ring pipe, and the other reverse pipe joint is fixedly mounted on the outer ring pipe, and the electromagnetic ignition burner, flow monitor and electromagnetic flow regulating valve are all electrically connected to the controller.

[0009] Preferably, the stirring mechanism includes a reduction motor and a mixing paddle fixedly mounted on an output end of the reduction motor, the mixing paddle is arranged inside the pyrolysis inner furnace, and the reduction motor is electrically connected to a controller.

[0010] Preferably, the exhaust gas purification mechanism includes a sewage pool and an exhaust gas treatment tower fixedly installed on the top of the sewage pool, the top of the exhaust gas treatment tower is fixedly connected to an exhaust channel, the bottom end of the exhaust gas exhaust pipe is fixedly connected to the bottom of the exhaust gas treatment tower, a check valve is fixedly installed on the exhaust gas exhaust pipe, and multiple baffles are fixedly installed on both sides of the inner wall of the exhaust gas treatment tower.

[0011] Preferably, the spray mechanism includes an alkali solution storage tank and a lifting pump fixedly installed on the top of the alkali solution storage tank, the top of the lifting pump is fixedly connected to a lifting pipe, the top of the lifting pipe is fixedly provided with an annular spray pipe, and the bottom of the annular spray pipe is fixedly installed with multiple atomizing nozzles.

[0012] Preferably, a slag cleaning passage extending to the pyrolysis inner furnace is fixedly provided on the front side of the pyrolysis outer furnace, and a sealed furnace door is fixedly installed on the slag cleaning passage.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The integrated pyrolysis treatment system for oily sludge adopts an improved heating mechanism, which directly introduces the pyrolysis gas generated by pyrolysis into the spray-burning component for direct combustion together with the liquefied gas. On the one hand, it can reduce the use of liquefied gas in the pyrolysis process and save energy. On the other hand, there is no need to condense and recover the pyrolysis gas, which reduces the complexity and difficulty of the pyrolysis process, is safer, and is more energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic diagram of the structure of the integrated pyrolysis treatment system of the utility model;

[0016] Figure 2 It is a front cross-sectional view of the integrated pyrolysis treatment system of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the heating mechanism of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the spray burning assembly of the utility model.

[0019] In the figure: 1. pyrolysis outer furnace; 2. purifier; 3. sewage pool; 4. liquefied gas input pipe; 5. sealed furnace door; 6. slag cleaning channel; 7. sludge addition port; 8. reduction motor; 9. pyrolysis gas duct; 10. controller; 11. control panel; 12. circulation pipe; 13. flow monitoring meter; 14. tail gas exhaust pipe; 15. tail gas treatment tower; 16. exhaust channel; 17. lifting pipe; 18. check valve; 19. lifting pump; 20. alkali liquid storage tank; 21. electromagnetic flow regulating valve; 22. atomizing nozzle; 23. pyrolysis inner furnace; 24. mixing paddle; 25. bottom support frame; 26. inner ring pipe; 27. outer ring pipe; 28. spraying assembly; 281. three-way pipe; 282. electromagnetic ignition burner; 283. reverse pipe joint; 29. ​​annular spray pipe; 30. baffle frame. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] See also Figure 1-4 The utility model provides an integrated pyrolysis treatment system for oily sludge, comprising a pyrolysis outer furnace 1 and a pyrolysis inner furnace 23 fixedly arranged inside the pyrolysis outer furnace 1, a bottom support frame 25 is fixedly arranged at the bottom of the inner wall of the pyrolysis outer furnace 1, a heating mechanism is fixedly installed on the bottom support frame 25, a stirring mechanism for fully heating the oily sludge is fixedly installed at the top of the pyrolysis outer furnace 1, a pyrolysis gas conduit 9 is fixedly connected to one side of the top of the pyrolysis inner furnace 23, a purifier 2 is fixedly installed at one end of the pyrolysis gas conduit 9, and a heating mechanism is fixedly installed at the top of the pyrolysis outer furnace 1. The side of the purifier 2 is fixedly connected with an exhaust pipe 14, one end of the exhaust pipe 14 is fixedly installed with an exhaust purification mechanism for treating combustion exhaust gas, one side of the exhaust purification mechanism is fixedly installed with a spray mechanism, the other side of the top of the pyrolysis outer furnace 1 is fixedly provided with a sludge addition port 7 extending to the pyrolysis inner furnace 23, the outside of the purifier 2 is fixedly installed with a controller 10, the surface of the controller 10 is fixedly installed with a control panel 11, the surface of the control panel 11 is fixedly installed with a power switch, and the controller 10 is electrically connected to the external power supply through the power switch;

[0022] When in use, the oily sludge is added into the pyrolysis inner furnace 23 through the sludge adding port 7, the sludge adding port 7 is closed, and the heating mechanism is operated to heat the oily sludge in the pyrolysis inner furnace 23 to achieve pyrolysis of the oily sludge. The pyrolysis gas generated by the pyrolysis enters the purifier 2 through the pyrolysis gas duct 9, and then enters the heating mechanism to be ignited. The exhaust gas generated by the combustion will enter the exhaust gas purification mechanism through the exhaust gas exhaust pipe 14 for spray purification.

[0023] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 Further, the heating mechanism includes an outer ring tube 27 and an inner ring tube 26 arranged inside the outer ring tube 27, the bottom of the outer ring tube 27 is fixedly connected with a liquefied gas input pipe 4 extending to the outside of the pyrolysis outer furnace 1, and the middle of the liquefied gas input pipe 4 is fixedly installed with an electromagnetic flow regulating valve 21, the bottom of the inner ring tube 26 is fixedly connected with a flow pipe 12, and the middle of the flow pipe 12 is fixedly installed with a flow monitoring meter 13, and the top of the flow pipe 12 passes through the pyrolysis outer furnace 1 and is fixedly installed at the gas outlet of the purifier 2, and the outer ring tube 27 and the inner ring tube are fixedly connected. A plurality of spraying assemblies 28 are fixedly installed between the tubes 26, and the spraying assemblies 28 include a three-way tube 281 and an electromagnetic ignition burner 282 fixedly installed at the top of the three-way tube 281. Both ends of the three-way tube 281 are fixedly installed with reverse pipe joints 283, one of which is fixedly installed on the inner ring tube 26, and the other is fixedly installed on the outer ring tube 27. The electromagnetic ignition burner 282, the flow monitoring meter 13 and the electromagnetic flow regulating valve 21 are all electrically connected to the controller 10;

[0024] When in use, the liquefied gas enters the outer ring pipe 27 through the liquefied gas input pipe 4, and then enters the three-way pipe 281, and is ignited by the electromagnetic ignition burner 282 to heat the oily sludge in the pyrolysis inner furnace 23. The pyrolysis gas generated by the oily sludge will enter the purifier 2 through the pyrolysis gas duct 9, intercept and filter impurities, and then enter the inner ring pipe 26 through the circulation pipe 12, and finally enter the three-way pipe 281, and is ignited by the electromagnetic ignition burner 282. During the circulation of the pyrolysis gas, the flow monitoring meter 13 will monitor the flow of the pyrolysis gas in real time, and the controller 10 will control the flow of the electromagnetic flow regulating valve 21 according to the flow of the pyrolysis gas, thereby adjusting the intake amount of the liquefied gas, which is more energy-efficient.

[0025] See also Figure 1 and Figure 2 Further, the stirring mechanism includes a reduction motor 8 and a mixing paddle 24 fixedly mounted at the output end of the reduction motor 8, the mixing paddle 24 is arranged inside the pyrolysis inner furnace 23, and the reduction motor 8 is electrically connected to the controller 10;

[0026] When in use, during the pyrolysis process, the reduction motor 8 will drive the mixing paddle 24 to continuously stir in the pyrolysis inner furnace 23, so that the oily sludge can be evenly and fully heated, thereby improving the efficiency of pyrolysis.

[0027] See also Figure 1 and Figure 2 Further, the tail gas purification mechanism includes a sewage pool 3 and a tail gas treatment tower 15 fixedly installed at the top of the sewage pool 3, the top of the tail gas treatment tower 15 is fixedly connected with an exhaust channel 16, the bottom end of the tail gas exhaust pipe 14 is fixedly connected to the bottom of the tail gas treatment tower 15, and a check valve 18 is fixedly installed on the tail gas exhaust pipe 14. Both sides of the inner wall of the tail gas treatment tower 15 are fixedly provided with a plurality of baffle frames 30, and the spray mechanism includes an alkali liquid storage tank 20 and a lifting pump 19 fixedly installed at the top of the alkali liquid storage tank 20, the top of the lifting pump 19 is fixedly connected with a lifting pipe 17, the top of the lifting pipe 17 is fixedly provided with an annular spray pipe 29, and the bottom of the annular spray pipe 29 is fixedly provided with a plurality of atomizing nozzles 22;

[0028] When in use, the exhaust gas generated by combustion enters the exhaust gas treatment tower 15 through the exhaust gas exhaust pipe 14, and the lifting pump 19 will continuously suck the alkali solution in the alkali solution storage tank 20. The alkali solution can be a diluted sodium hydroxide solution, clarified lime water, etc. The alkali solution is filled into the annular spray pipe 29 through the lifting pipe 17 and sprayed out by the atomizing nozzle 22. After the exhaust gas enters the exhaust gas treatment tower 15, it will rise in the exhaust gas treatment tower 15 along the baffle frame 30, and react with the falling atomized alkali solution to reduce the emission of acidic gases in the exhaust gas.

[0029] See also Figure 1 Furthermore, a slag cleaning channel 6 extending to the pyrolysis inner furnace 23 is fixedly provided on the front of the pyrolysis outer furnace 1, and a sealed furnace door 5 is fixedly installed on the slag cleaning channel 6;

[0030] When in use, after the pyrolysis is completed, the sealed furnace door 5 is opened, and the slag in the pyrolysis inner furnace 23 is cleaned through the slag cleaning channel 6 .

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An integrated pyrolysis treatment system for oily sludge, comprising a pyrolysis outer furnace (1) and a pyrolysis inner furnace (23) fixedly arranged inside the pyrolysis outer furnace (1), characterized in that: A bottom support frame (25) is fixedly provided at the bottom of the inner wall of the pyrolysis outer furnace (1), and a heating mechanism is fixedly installed on the bottom support frame (25). A stirring mechanism for fully heating the oil-containing sludge is fixedly installed at the top of the pyrolysis outer furnace (1). A pyrolysis gas conduit (9) is fixedly connected to one side of the top of the pyrolysis inner furnace (23), and a purifier (2) is fixedly installed at one end of the pyrolysis gas conduit (9). A tail gas exhaust pipe (14) is fixedly connected to one side of the top of the pyrolysis outer furnace (1), and a tail gas purification mechanism for treating combustion tail gas is fixedly installed at one end of the tail gas exhaust pipe (14). A spray mechanism is fixedly installed on one side of the tail gas purification mechanism. A sludge addition port (7) extending to the pyrolysis inner furnace (23) is fixedly provided on the other side of the top of the pyrolysis outer furnace (1).

2. The integrated pyrolysis treatment system for oily sludge according to claim 1 is characterized by: A controller (10) is fixedly mounted on the outside of the purifier (2), a control panel (11) is fixedly mounted on the surface of the controller (10), a power switch is fixedly mounted on the surface of the control panel (11), and the controller (10) is electrically connected to an external power supply via the power switch.

3. The integrated pyrolysis treatment system for oily sludge according to claim 2 is characterized by: The heating mechanism comprises an outer ring tube (27) and an inner ring tube (26) arranged on the inner side of the outer ring tube (27); the bottom of the outer ring tube (27) is fixedly connected to a liquefied gas input pipe (4) extending to the outside of the pyrolysis outer furnace (1); an electromagnetic flow regulating valve (21) is fixedly installed in the middle of the liquefied gas input pipe (4); the bottom of the inner ring tube (26) is fixedly connected to a flow pipe (12); a flow monitoring meter (13) is fixedly installed in the middle of the flow pipe (12); the top end of the flow pipe (12) passes through the pyrolysis outer furnace (1) and is fixedly installed at the gas outlet of the purifier (2); and a plurality of spraying components (28) are fixedly installed between the outer ring tube (27) and the inner ring tube (26).

4. The integrated pyrolysis treatment system for oily sludge according to claim 3 is characterized by: The spraying assembly (28) comprises a three-way pipe (281) and an electromagnetic ignition burner (282) fixedly mounted on the top of the three-way pipe (281); both ends of the three-way pipe (281) are fixedly mounted with reverse pipe joints (283); one of the reverse pipe joints (283) is fixedly mounted on the inner ring pipe (26); and the other reverse pipe joint (283) is fixedly mounted on the outer ring pipe (27); the electromagnetic ignition burner (282), the flow monitor (13) and the electromagnetic flow regulating valve (21) are all electrically connected to the controller (10).

5. The integrated pyrolysis treatment system for oily sludge according to claim 2 is characterized by: The stirring mechanism comprises a reduction motor (8) and a mixing paddle (24) fixedly mounted on the output end of the reduction motor (8); the mixing paddle (24) is arranged inside the pyrolysis inner furnace (23); and the reduction motor (8) is electrically connected to a controller (10).

6. The integrated pyrolysis treatment system for oily sludge according to claim 1 is characterized by: The tail gas purification mechanism comprises a sewage pool (3) and a tail gas treatment tower (15) fixedly arranged at the top of the sewage pool (3); the top of the tail gas treatment tower (15) is fixedly connected to an exhaust passage (16); the bottom end of the tail gas exhaust pipe (14) is fixedly connected to the bottom of the tail gas treatment tower (15); a check valve (18) is fixedly installed on the tail gas exhaust pipe (14); and a plurality of baffle frames (30) are fixedly arranged on both sides of the inner wall of the tail gas treatment tower (15).

7. The integrated pyrolysis treatment system for oily sludge according to claim 6 is characterized by: The spray mechanism comprises an alkali liquid storage tank (20) and a lifting pump (19) fixedly mounted on the top of the alkali liquid storage tank (20); the top of the lifting pump (19) is fixedly connected to a lifting pipe (17); the top of the lifting pipe (17) is fixedly provided with an annular spray pipe (29); and the bottom of the annular spray pipe (29) is fixedly mounted with a plurality of atomizing nozzles (22).

8. The integrated pyrolysis treatment system for oily sludge according to claim 1 is characterized by: A slag cleaning channel (6) extending to the pyrolysis inner furnace (23) is fixedly provided on the front side of the pyrolysis outer furnace (1), and a sealed furnace door (5) is fixedly installed on the slag cleaning channel (6).

Images