Efficient torch condensate recovery device

Abstract

The utility model discloses an efficient torch condensate recovery device, which relates to the technical field of torch condensate recovery and comprises a low-pressure flash steam stripping tower, a separation tank is arranged on one side of the low-pressure flash steam stripping tower, and a low-flash gas pipeline is arranged at the top of the low-pressure flash steam stripping tower. The other end of the low-flash gas pipeline is connected with a condenser; and the condenser is connected with the middle part of the separation tank. According to the high-efficiency torch condensate recovery device, under the mutual cooperation of the condenser, the separation tank and the desulfurization recovery pipeline, the problem of environmental pollution caused by hydrogen sulfide escape is solved, the safety problem of personnel poisoning caused by gathering of hydrogen sulfide at a low point of a biochemical pool of a sewage system is solved, the hydrogen sulfide is conveniently recovered, and the recovery efficiency of the torch condensate is improved. Furthermore, the sewage system is not influenced by hydrogen sulfide substances, so that the operation cycle and the working efficiency of the sewage system are conveniently improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flare condensate recovery, and specifically relates to an efficient flare condensate recovery device. Background Art

[0002] Flare condensate recovery has always been a difficult problem in the chemical recovery field for the following reasons: 1. The flare condensate contains hydrogen sulfide substances. In the existing treatment process, hydrogen sulfide in the fire condensate will accumulate inside the sewage tank in the sewage treatment system, which is likely to cause safety accidents for the staff; 2. It is impossible to efficiently recover hydrogen sulfide substances, which will cause serious air pollution and water pollution; 3. The aqueous solution of hydrogen sulfide is called hydrosulfuric acid, which is a weak acid. When it is heated, hydrogen sulfide will escape from the liquid, making it inconvenient for the sewage treatment system to carry out treatment operations; 4. Hydrogen sulfide is highly toxic and will produce anaerobic bacteria, aerobic bacteria, etc. in the biochemical tank of sewage treatment, reducing the work efficiency. In severe cases, it will paralyze the sewage treatment system. To sum up, an efficient flare condensate recovery device is needed to solve the problems of environmental pollution caused by hydrogen sulfide escape, safety problems of staff poisoning caused by hydrogen sulfide accumulation, and the problem of improving the operation cycle of the sewage treatment system, and to improve work efficiency and recovery quality.

[0003] Based on this, an efficient flare condensate recovery device is now provided, which can eliminate the drawbacks of the existing technical solutions. Content of the Utility Model

[0004] The purpose of the utility model is to provide an efficient flare condensate recovery device to solve the problems of environmental pollution caused by hydrogen sulfide escape, staff poisoning caused by hydrogen sulfide accumulation, and inconvenient treatment of the sewage treatment system in the background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An efficient flare condensate recovery device includes a low-pressure flash steam stripping tower. A separation tank is arranged on one side of the low-pressure flash steam stripping tower. A low-flash gas pipeline is arranged at the top of the low-pressure flash steam stripping tower. The other end of the low-flash gas pipeline is connected to a condenser, and the condenser is connected to the middle of the separation tank;

[0007] It also includes an ash water tank arranged on one side of the separation tank, a flare gas separation tank arranged on the left side of the ash water tank, and a high-pressure flash steam stripping tower arranged on the left side of the low-pressure flash steam stripping tower.

[0008] Preferably, a desulfurization recovery pipeline is arranged at the top of the separation tank. The bottom of the separation tank is connected to a first ash water pipeline, and the other end of the first ash water pipeline is connected to the top of the ash water tank.

[0009] Preferably, the ash water tank is connected to the upper end of the low-pressure flash steam stripping column through a second ash water pipeline. A low-pressure ash water pump is provided on the side of the second ash water pipeline close to the ash water tank, and a production water make-up pipeline is connected to one side of the second ash water pipeline.

[0010] Preferably, flare gas pipelines are provided at both the top and middle of the flare gas separation tank, and a flare condensate pump is provided at the bottom of the flare gas separation tank.

[0011] Preferably, a washing tower feed pump is provided at the bottom of the high-pressure flash steam stripping column. The top of the high-pressure flash steam stripping column is connected to a high flash upper gas pipeline, and the other end of the high flash upper gas pipeline is connected to the low flash gas pipeline of the low flash tank. The other end of the low flash gas pipeline of the low flash tank is connected to the middle of the low-pressure flash steam stripping column, and a high flash gas pipeline is connected to one side of the high-pressure flash steam stripping column.

[0012] Preferably, the other end of the flare condensate pump is connected to the second ash water pipeline, and the flare condensate pump is provided on the side of the low-pressure ash water pump away from the ash water tank.

[0013] Preferably, a high flash gas stripping column feed pump is also provided between the high-pressure flash steam stripping column and the low-pressure flash steam stripping column.

[0014] Preferably, control valves are provided on the outer sides of the first ash water pipeline, the second ash water pipeline, the production water make-up pipeline, the high flash upper gas pipeline.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The present utility model provides an efficient flare condensate recovery device. With the mutual cooperation of the condenser, the separation tank and the desulfurization recovery pipeline, it is beneficial to solve the environmental pollution problem caused by the escape of hydrogen sulfide, solve the safety problem of hydrogen sulfide accumulating at the low point of the biochemical pool in the sewage system and causing personnel poisoning, facilitate the recovery operation of hydrogen sulfide, thereby improving the economic benefit of producing sulfuric acid from hydrogen sulfide, and the sewage system will not be affected by hydrogen sulfide substances, which is convenient to improve its operation cycle and working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the whole of the present utility model.

[0018] Figure 2 It is a schematic structural diagram of the present utility model.

[0019] Figure 3 It is the Figure 2 enlarged view of part A in the present utility model.

[0020] Annotation of reference numerals: Low-pressure flash steam stripping column 10, low flash gas pipeline 11, separation tank 20, desulfurization recovery pipeline 21, first ash water pipeline 22, condenser 30, ash water tank 40, second ash water pipeline 41, low-pressure ash water pump 42, production water make-up pipeline 43, flare gas separation tank 50, flare gas pipeline 51, flare condensate pump 52, high-pressure flash steam stripping column 60, washing tower feed pump 61, high flash upper gas pipeline 62, low flash tank low flash gas pipeline 63, high flash gas pipeline 64, high flash steam stripping column feed pump 65. Detailed implementation mode

[0021] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments.

[0022] Embodiment 1

[0023] In this embodiment, as Figures 1-3 shown, an efficient flare condensate recovery device includes a low-pressure flash steam stripping column 10. The low-pressure flash steam stripping column 10 can gather the ash water at 115 degrees, the low flash gas from the low flash tank low flash gas pipeline 63, and the gas in the high flash upper gas pipeline 62 in the flare condensate, facilitating hydrogen sulfide regeneration and stripping operations. A separation tank 20 is provided on one side of the low-pressure flash steam stripping column 10. The separation tank 20 can separate the saturated water in the transported substance, facilitating the transportation of hydrogen sulfide into the desulfurization recovery pipeline 21. A low flash gas pipeline 11 is provided at the top of the low-pressure flash steam stripping column 10. The other end of the low flash gas pipeline 11 is connected to a condenser 30. The condenser 30 is connected to the middle of the separation tank 20. One end of the condenser 30 is connected to the upper part of the low-pressure flash steam stripping column 10, and the other end is connected to the middle of the separation tank 20. The condenser 30 plays a role in reducing the temperature, avoiding the decrease in the solubility of hydrogen sulfide in water caused by high temperature, and thus affecting the recovery efficiency and quality;

[0024] It also includes an ash water tank 40, which is provided on one side of the separation tank 20, a flare gas separation tank 50, which is provided on the left side of the ash water tank 40, and a high-pressure flash steam stripping column 60, which is provided on the left side of the low-pressure flash steam stripping column 10. Before the efficient flare condensate recovery device starts to be used, first check whether the device can be used normally, and then perform the opening and closing operations on the control valves to make the device enter the standby state;

[0025] Among them, as Figure 2 shown, a desulfurization recovery pipeline 21 is provided at the top of the separation tank 20. The other end of the sulfur recovery pipeline 21 is connected to a sulfur recovery device, enabling hydrogen sulfide to go to the sulfur recovery device through the desulfurization recovery pipeline 21, facilitating the production of sulfuric acid. The bottom of the separation tank 20 is connected to a first ash water pipeline 22. The other end of the first ash water pipeline 22 is connected to the top of the ash water tank 40;

[0026] Among them, as Figure 2 and Figure 3 shown, the ash water tank 40 is connected to the upper end of the low-pressure flash steam stripping tower 10 through the second ash water pipeline 41. A low-pressure ash water pump 42 is arranged on one side of the second ash water pipeline 41 close to the ash water tank 40. A valve is arranged on one side of the low-pressure ash water pump 42. A production water make-up pipeline 43 is connected to one side of the second ash water pipeline 41. The recovery of flare condensate can reduce the use of production water and facilitate the replenishment of gasification ash water;

[0027] Among them, as Figure 1 and Figure 2 shown, flare gas pipelines 51 are arranged at the top and middle of the flare gas separation tank 50. A flare condensate pump 52 is arranged at the bottom of the flare gas separation tank 50. A valve is arranged on one side of the flare condensate pump 52. The flare gas separation tank 50 is connected to the upper end of the low-pressure flash steam stripping tower 10 through the flare condensate pump 52 and the second ash water pipeline 41, so that the flare condensate can be recycled by the gasification ash water system;

[0028] Among them, as Figure 1 and Figure 2 shown, a washing tower feed pump 61 is arranged at the bottom of the high-pressure flash steam stripping tower 60 for purifying the recovered flare condensate. The washing tower feed pump 61 is connected to the high-pressure flash steam stripping tower 60, and thus can convey the ash water to the washing tower gasifier. A valve is arranged on one side of the washing tower feed pump 61. The top of the high-pressure flash steam stripping tower 60 is connected to a high flash upper gas pipeline 62. The other end of the high flash upper gas pipeline 62 is connected to the low flash gas pipeline 63 of the low flash tank. The other end of the low flash gas pipeline 63 of the low flash tank is connected to the middle part of the low-pressure flash steam stripping tower 10. A high flash gas pipeline 64 is connected to one side of the high-pressure flash steam stripping tower 60. The high flash gas comes from the medium-pressure flash evaporation tower, which increases the structural stability and enables the corresponding substances to enter the subsequent operations smoothly;

[0029] Among them, as Figures 1-3 shown, the other end of the flare condensate pump 52 is connected to the second ash water pipeline 41. The flare condensate pump 52 is arranged on the side of the low-pressure ash water pump 42 far from the ash water tank 40, which is convenient for ensuring the normal operation of the device;

[0030] Among them, as Figure 2 and Figure 3 shown, a high flash stripping tower feed pump 65 is also arranged between the high-pressure flash steam stripping tower 60 and the low-pressure flash steam stripping tower 10, which is convenient for conveying the ash water to the top of the high-pressure flash steam stripping tower 60;

[0031] Example 2

[0032] The difference from Example 1 is that among them, as Figure 1 and Figure 2As shown, control valves are provided on the outsides of the first ash water pipeline 22, the second ash water pipeline 41, the production water make-up pipeline 43, and the upper high-flash gas pipeline 62, which is convenient for controlling the content and rate, limiting the flow rate, and avoiding mistakes caused by excessive or insufficient input volume.

[0033] During use, one end of the low-flash gas pipeline 63 of the low-flash tank and the upper high-flash gas pipeline 62 intersect and are then connected to the middle part of the low-pressure flash steam stripping tower 10. The high-flash gas pipeline 64 comes from the middle-pressure flash evaporation tower and is connected to the middle part of the high-pressure flash steam stripping tower 60. The washing tower feed pump 61 is connected to the high-pressure flash steam stripping tower 60, which is convenient for sending the ash water to the washing tower gasifier. The high-flash gas stripping tower feed pump 65 is connected to the bottom of the low-pressure flash steam stripping tower 10, which is convenient for transporting the ash water to the upper part of the high-pressure flash steam stripping tower 60. The low-flash gas pipeline 11 is connected to the upper part of the low-pressure flash steam stripping tower 10, enabling the internal substances to be cooled by the condenser 30 and separated from the saturated water in the separation tank 20 and then transported to the inside of the desulfurization recovery pipeline 21, which is convenient for connecting to the desulfurization recovery equipment. The flare condensate pump 52 is connected to the flare gas separation tank 50 and the other end is connected to the second ash water pipeline 41, which is convenient for transporting the internal substances to the upper part of the low-pressure flash steam stripping tower 10. This structure is simple and has good practicability.

[0034] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A high-efficiency flare condensate recovery device, comprising a low-pressure flash gas stripping tower (10), a separation tank (20) is arranged on one side of the low-pressure flash gas stripping tower (10), a low-flash gas pipeline (11) is arranged on the top of the low-pressure flash gas stripping tower (10), a condenser (30) is connected to the other end of the low-flash gas pipeline (11), and the condenser (30) is connected to the middle part of the separation tank (20); It is characterized in that It also includes a gray water tank (40), wherein the gray water tank (40) is arranged on one side of the separation tank (20); A flare gas separation tank (50), wherein the flare gas separation tank (50) is arranged on the left side of the ash water tank (40); A high-pressure flash gas stripping tower (60) is provided on the left side of the low-pressure flash gas stripping tower (10).

2. The high-efficiency flare condensate recovery device according to claim 1, characterized in that: A desulfurization recovery pipeline (21) is provided at the top of the separation tank (20), and a first grey water pipeline (22) is connected to the bottom of the separation tank (20), and the other end of the first grey water pipeline (22) is connected to the top of the grey water tank (40).

3. The high-efficiency flare condensate recovery device according to claim 2 is characterized in that: The grey water tank (40) is connected to the upper end of the low-pressure flash stripping tower (10) via a second grey water pipeline (41); a low-pressure grey water pump (42) is provided on one side of the second grey water pipeline (41) close to the grey water tank (40); and a production water replenishment pipeline (43) is connected to one side of the second grey water pipeline (41).

4. The high-efficiency flare condensate recovery device according to claim 3 is characterized in that: The top and middle of the flare gas separation tank (50) are both provided with flare gas pipelines (51), and the bottom of the flare gas separation tank (50) is provided with a flare condensate pump (52).

5. The high-efficiency flare condensate recovery device according to claim 3 is characterized in that: A washing tower feed pump (61) is arranged at the bottom of the high-pressure flash gas lift tower (60), a high-flash upper gas pipeline (62) is connected to the top of the high-pressure flash gas lift tower (60), the other end of the high-flash upper gas pipeline (62) is connected to a low-flash tank low-flash gas pipeline (63), the other end of the low-flash tank low-flash gas pipeline (63) is connected to the middle of the low-pressure flash gas lift tower (10), and one side of the high-pressure flash gas lift tower (60) is connected to a high-flash gas pipeline (64).

6. The high-efficiency flare condensate recovery device according to claim 4, characterized in that: The other end of the flare condensate pump (52) is connected to the second grey water pipeline (41), and the flare condensate pump (52) is arranged on a side of the low-pressure grey water pump (42) away from the grey water tank (40).

7. The high-efficiency flare condensate recovery device according to claim 1, characterized in that: A high-pressure flash gas stripping tower feed pump (65) is also provided between the high-pressure flash gas stripping tower (60) and the low-pressure flash gas stripping tower (10).

8. The high-efficiency flare condensate recovery device according to claim 5, characterized in that: Control valves are provided on the outsides of the first grey water pipeline (22), the second grey water pipeline (41), the production water replenishment pipeline (43) and the high flash upper gas pipeline (62).

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