Oil sludge treatment waste gas purification device

Abstract

The utility model discloses an oil sludge treatment waste gas purification device, which belongs to the technical field of waste gas treatment, aims at solving the problems of more waste gas treatment equipment, longer treatment time and larger occupied area, and comprises a tower body, a smoke inlet pipe is fixedly communicated with the top end of the tower body, and a smoke outlet pipe is fixedly communicated with the bottom of one side of the outer surface of the tower body. A demister is fixedly communicated with the side, away from the tower body, of the smoke outlet pipe, a catalytic oxidation device is arranged on the side, away from the smoke outlet pipe, of the demister, a quenching assembly is arranged in the tower body, and a spraying assembly is arranged in the tower body; according to the utility model, quenching and spraying are arranged in one tower body, after the quenching assembly rapidly cools waste gas, the spraying device performs alkali spraying and acid removal operation, and the catalytic oxidation device performs catalytic oxidation operation on the gas subjected to acid removal, so that the waste gas treatment process is shortened, the waste gas treatment time is shortened, the occupied area of the equipment is saved, and the production cost is reduced. And the problems of more waste gas treatment equipment, longer treatment time and larger occupied area are effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment, and in particular relates to a waste gas purification device for oil sludge treatment. Background Art

[0002] Oily sludge is one of the main sources of pollution in the oil industry. It is a type of oily solid waste with resource recovery value generated during oil extraction, well repair, gathering, refining, transportation and storage. In the prior art, pyrolysis is usually used to treat oily sludge. Pyrolysis refers to heating oily sludge under oxygen-free and slightly positive pressure conditions to precipitate oil and organic matter therein, and separating oily sludge into pyrolysis residue, pyrolysis liquid and pyrolysis gas to achieve the purpose of resource utilization. After pyrolysis of oily sludge, some non-condensable gases with a boiling point lower than room temperature will be produced. The non-condensable gases contain inorganic pollutants and a small amount of organic pollutants. In order to ensure environmental protection and reduce the pollution of non-condensable gases to the environment, it is necessary to use an exhaust gas purification device to purify the non-condensable gases. These non-condensable gases do not need to undergo complex tail gas treatment, but only need to undergo desulfurization, deacidification and catalytic oxidation treatment to meet emission standards.

[0003] The prior art discloses a petrochemical sludge drying waste gas treatment system with a patent announcement number of CN111888915A, which comprises a water washing spray tower, a cooling tower, an alkali washing oxidation tower, a first centrifugal fan, a centrifugal demister, a first extreme ultraviolet titanium dioxide ozone catalytic oxidation reactor, a second extreme ultraviolet titanium dioxide ozone catalytic oxidation reactor, an ozone manganese-based catalytic oxidation reactor, an ozone generator, and a second centrifugal fan, which are sequentially connected through pipelines; according to the characteristics of the petrochemical sludge drying waste gas itself and the physical and chemical characteristics of the pollutants in the waste gas, the above-mentioned sequentially connected The connected equipment constitutes an advantageous combination waste gas treatment system, which has a wide range of targeting for pollutant components in petrochemical waste gas, has few restrictions on use conditions, low equipment investment cost, low use cost, and low safety risk. It effectively solves the problems of high energy consumption and low treatment efficiency of existing equipment. At the same time, by pre-treating the waste gas in the early stage, the risk of combustion and explosion caused by the waste gas directly entering the catalytic oxidation equipment is avoided. However, in actual use, there are still the following shortcomings: there are many waste gas treatment equipment, the waste gas treatment time is long, and the equipment occupies a large area, which increases the investment cost.

[0004] Therefore, there is a need for an oily sludge treatment waste gas purification device to solve the problems in the prior art of having a large number of waste gas treatment equipment, a long treatment time and a large floor space. Utility Model Content

[0005] The purpose of the utility model is to provide a sludge treatment waste gas purification device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sludge treatment waste gas purification device, comprising a tower body, the top of the tower body is fixedly connected with a smoke inlet pipe, the bottom of one side of the outer surface of the tower body is fixedly connected with a smoke outlet pipe, the bottom end of the tower body is fixedly connected with a discharge pipe, the outer surface of the discharge pipe is provided with a switch valve, the side of the smoke outlet pipe away from the tower body is fixedly connected with a demister, the side of the demister away from the smoke outlet pipe is provided with a catalytic oxidation device, the top of the outer wall of the catalytic oxidation device away from the demister is fixedly connected with an exhaust pipe, the bottom of the outer surface of the tower body is fixedly connected with a liquid injection pipe, the inner surface of the tower body is fixedly connected with two parallel distributed packing layers, the top of the packing layer is provided with a plurality of circumferentially distributed through holes, the packing layer is provided with a plurality of filling balls, the tower body is provided with a quenching component, and the tower body is provided with a spray component.

[0007] It should be noted in the scheme that the quenching component includes a quenching pump, the outer wall of one end of the quenching pump is fixedly connected to the outer surface of the tower body by two connecting rods, the input end of the quenching pump is fixedly connected to the tower body, the output end of the quenching pump is fixedly connected to a tee, and both ends of the tee away from the quenching pump are fixedly connected to quenching pipelines, and the ends of the two quenching pipelines away from the tee respectively penetrate the two sides of the tower body surface and are fixedly connected to quenching nozzles.

[0008] It is further worth explaining that the spray assembly includes a spray pump, and the outer wall of one side of the spray pump is fixedly connected to one side of the outer surface of the tower body by two connecting rods, the input end of the spray pump is fixedly connected to the tower body, and the output end of the spray pump is fixedly connected to a spray pipe, and the end of the spray pipe away from the spray pump passes through one side of the tower body and is fixedly connected to an annular tube, and the two ends of the outer surface of the annular tube are fixedly connected to the two ends of the inner surface of the tower body by connecting columns, and the inner circle of the annular tube is fixedly connected to a plurality of spray heads distributed in a circle.

[0009] It should be further explained that four supporting legs distributed in a circumference are fixedly connected to the bottom of the outer surface of the tower body, and a supporting frame is fixedly connected to the bottom surface of the catalytic oxidation device.

[0010] As a preferred implementation, the annular tube is located below the quench nozzle, and the annular tube is located above the packing layer.

[0011] As a preferred implementation, the top and bottom ends of the tower body are both configured as flat-topped conical structures, and the bottom surfaces of the support legs and the support frame are located at the same horizontal height.

[0012] Compared with the prior art, the oil sludge treatment waste gas purification device provided by the utility model has at least the following beneficial effects:

[0013] (1) Through the cooperation of the quenching component and the spraying component, the quenching component quickly cools the waste gas, and then the spraying device sprays alkali to remove the acid. By setting a demister, the gas after the acid is removed is demisted. By setting a catalytic oxidation device, the gas after the acid is removed is catalytically oxidized, thereby shortening the waste gas treatment process, improving the waste gas treatment efficiency, and effectively avoiding the problem of more waste gas treatment equipment and longer treatment time.

[0014] (2) By arranging the rapid cooling and spraying in one tower body, the investment cost is saved while the waste gas treatment efficiency is improved. The equipment investment cost is low, the operating cost is low, and the safety risk is low. The problems of high energy consumption and low treatment efficiency of existing equipment are solved. At the same time, the floor space occupied by the equipment is saved, and the problem of a large number of waste gas treatment equipment and a large floor space is effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the tower body of the utility model when viewed from above;

[0017] Figure 3 This is a schematic diagram of the front cross-sectional structure of the tower body of the utility model;

[0018] Figure 4 It is a schematic diagram of the front cross-sectional structure of the packing layer of the utility model.

[0019] In the figure: 1. tower body; 2. smoke inlet pipe; 3. smoke outlet pipe; 4. discharge pipe; 5. demister; 6. catalytic oxidation device; 7. exhaust pipe; 8. quenching assembly; 81. quenching pump; 82. three-way pipe; 83. quenching pipeline; 84. quenching nozzle; 9. spraying assembly; 91. spraying pump; 92. spraying pipe; 93. annular pipe; 94. spraying head; 10. injection pipe; 11. packing layer; 12. through hole; 13. filling ball; 14. switch valve; 15. support leg; 16. support frame. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the embodiments.

[0021] See also Figure 1-Figure 4The utility model provides an oil sludge treatment waste gas purification device, including a tower body 1, a smoke inlet pipe 2 is fixedly connected to the top of the tower body 1, a smoke outlet pipe 3 is fixedly connected to the bottom of one side of the outer surface of the tower body 1, a discharge pipe 4 is fixedly connected to the bottom of the tower body 1, a switch valve 14 is arranged on the outer surface of the discharge pipe 4, a demister 5 is fixedly connected to the side of the smoke outlet pipe 3 away from the tower body 1, a catalytic oxidation device 6 is arranged on the side of the demister 5 away from the smoke outlet pipe 3, an exhaust pipe 7 is fixedly connected to the top of the outer wall of the catalytic oxidation device 6 away from the demister 5, an injection pipe 10 is fixedly connected to the bottom of the outer surface of the tower body 1, two parallel distributed packing layers 11 are fixedly connected to the inner surface of the tower body 1, a plurality of circumferentially distributed through holes 12 are opened at the top of the packing layer 11, a plurality of filling balls 13 are arranged inside the packing layer 11, a quenching component 8 is arranged inside the tower body 1, and a spray component 9 is arranged inside the tower body 1.

[0022] Further Figure 1 and Figure 2 As shown, it is worth specifically explaining that the quenching component 8 includes a quenching pump 81, and the outer wall of one end of the quenching pump 81 is fixedly connected to the outer surface of the tower body 1 by two connecting rods. The input end of the quenching pump 81 is fixedly connected to the tower body 1, and the output end of the quenching pump 81 is fixedly connected to a three-way pipe 82. Both ends of the three-way pipe 82 away from the quenching pump 81 are fixedly connected to quenching pipelines 83, and the ends of the two quenching pipelines 83 away from the three-way pipe 82 respectively penetrate the two sides of the outer surface of the tower body 1 and are fixedly connected to quenching nozzles 84.

[0023] Further Figure 1 and Figure 3 As shown, it is worth explaining in detail that the spray assembly 9 includes a spray pump 91, and the outer wall of one side of the spray pump 91 is fixedly connected to one side of the outer surface of the tower body 1 by two connecting rods, the input end of the spray pump 91 is fixedly connected to the tower body 1, and the output end of the spray pump 91 is fixedly connected to a spray pipe 92, and the end of the spray pipe 92 away from the spray pump 91 passes through one side of the outer surface of the tower body 1 and is fixedly connected to an annular tube 93, and the two ends of the outer surface of the annular tube 93 are fixedly connected to the two ends of the inner surface of the tower body 1 by connecting columns, and the inner circle of the annular tube 93 is fixedly connected to a plurality of spray heads 94 distributed in a circle.

[0024] Further Figure 1 As shown, it is worth explaining in detail that four supporting legs 15 distributed in a circumference are fixedly connected to the bottom of the outer surface of the tower body 1, and a supporting frame 16 is fixedly connected to the bottom surface of the catalytic oxidation device 6.

[0025] Further Figure 1As shown, it is worth explaining in detail that the annular tube 93 is located below the quench nozzle 84, ensuring that the temperature of the flue gas is reduced before spray washing, thereby improving the spray efficiency of the flue gas. The annular tube 93 is located above the packing layer 11, and the flue gas after spraying is dispersed under the action of the packing layer 11, thereby increasing the residence time of the gas and enhancing the spraying effect of the alkali solution on the flue gas.

[0026] Further Figure 1 As shown, it is worth explaining in detail that the top and bottom ends of the tower body 1 are both configured as flat-topped conical structures to facilitate the introduction of flue gas and the discharge of waste materials. The bottom surfaces of the support legs 15 and the support frame 16 are located at the same horizontal height to ensure the overall stability of the device.

[0027] In summary: when the exhaust gas purification device is in use, the alkaline liquid is first injected into the tower body 1 through the injection pipe 10, and the flue gas is sent into the tower body 1 from the smoke inlet pipe 2. At the same time, the quenching pump 81 and the spray pump 91 are turned on. The quenching pump 81 extracts and cools the alkaline liquid from the inside of the tower body 1, and transports it to the inside of the quenching pipeline 83 through the three-way pipe 82, and then sprays it through the quenching nozzle 84. The atomized alkaline liquid rapidly cools the high-temperature flue gas, and the cooled flue gas flows downward. At this time, the spray pump 91 pumps out the alkaline liquid, transports it to the inside of the annular pipe 93 through the spray pipe 92, and sprays it through the spray head 94 The flue gas is sprayed and washed, and the flue gas after spraying is dispersed under the action of the packing layer 11. Several filling balls 13 increase the gas-liquid contact area, increase the residence time of the gas, and enhance the spraying effect of the alkali solution on the flue gas. The flue gas after spraying alkali to remove acid is sent out from the smoke outlet pipe 3, and then the flue gas is defogged by the demister 5, and then enters the catalytic oxidation device 6 for catalytic oxidation treatment, and finally the treated gas is discharged through the exhaust pipe 7. The exhaust gas purification effect is better and the treatment time is shorter, which effectively avoids the problems of more exhaust gas treatment equipment, longer treatment time and larger floor space.

[0028] The quenching pump 81 and the spraying pump 91 can be purchased on the market. The quenching pump 81 and the spraying pump 91 are equipped with a power supply, which is a mature technology in this field and has been fully disclosed, so they are not repeated in the specification.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sludge treatment waste gas purification device, comprising a tower body (1), characterized in that: The top of the tower body (1) is fixedly connected to a smoke inlet pipe (2), the bottom of one side of the outer surface of the tower body (1) is fixedly connected to a smoke outlet pipe (3), the bottom of the tower body (1) is fixedly connected to a discharge pipe (4), the outer surface of the discharge pipe (4) is provided with a switch valve (14), the side of the smoke outlet pipe (3) away from the tower body (1) is fixedly connected to a demister (5), the side of the demister (5) away from the smoke outlet pipe (3) is provided with a catalytic oxidation device (6), and the catalytic oxidation device (6) away from the demister ( 5), an exhaust pipe (7) is fixedly connected to the top of the outer wall of one side of the tower body (1), an injection pipe (10) is fixedly connected to the bottom of the outer surface of the tower body (1), two parallel-distributed packing layers (11) are fixedly connected to the inner surface of the tower body (1), a plurality of circumferentially distributed through holes (12) are opened at the top of the packing layer (11), a plurality of filling balls (13) are arranged inside the packing layer (11), a quenching component (8) is arranged inside the tower body (1), and a spray component (9) is arranged inside the tower body (1).

2. The oil sludge treatment waste gas purification device according to claim 1, characterized in that: The quenching assembly (8) comprises a quenching pump (81); the outer wall of one end of the quenching pump (81) is fixedly connected to the outer surface of the tower body (1) via two connecting rods; the input end of the quenching pump (81) is fixedly connected to the tower body (1); the output end of the quenching pump (81) is fixedly connected to a three-way pipe (82); both ends of the three-way pipe (82) away from the quenching pump (81) are fixedly connected to quenching pipelines (83); and the ends of the two quenching pipelines (83) away from the three-way pipe (82) respectively penetrate the two sides of the outer surface of the tower body (1) and are fixedly connected to quenching nozzles (84).

3. The sludge treatment waste gas purification device according to claim 2, characterized in that: The spray assembly (9) comprises a spray pump (91); an outer wall of one side of the spray pump (91) is fixedly connected to one side of the outer surface of the tower body (1) via two connecting rods; an input end of the spray pump (91) is fixedly connected to the tower body (1); an output end of the spray pump (91) is fixedly connected to a spray pipe (92); an end of the spray pipe (92) away from the spray pump (91) passes through one side of the outer surface of the tower body (1) and is fixedly connected to an annular pipe (93); two ends of the outer surface of the annular pipe (93) are fixedly connected to two ends of the inner surface of the tower body (1) via connecting columns; and the inner ring of the annular pipe (93) is fixedly connected to a plurality of circumferentially distributed spray heads (94).

4. The oil sludge treatment waste gas purification device according to claim 3, characterized in that: Four support legs (15) distributed in a circumference are fixedly connected to the bottom of the outer surface of the tower body (1), and a support frame (16) is fixedly connected to the bottom surface of the catalytic oxidation device (6).

5. The oil sludge treatment waste gas purification device according to claim 4, characterized in that: The annular tube (93) is located below the quench nozzle (84), and the annular tube (93) is located above the packing layer (11).

6. The oil sludge treatment waste gas purification device according to claim 5, characterized in that: The top and bottom ends of the tower body (1) are both configured as flat-topped conical structures, and the bottom surfaces of the support legs (15) and the support frame (16) are located at the same horizontal height.

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