Gas water seal system

Abstract

The utility model provides a coal gas water seal system, which is suitable for a cold blowing process of a coking plant, belongs to the technical field of energy conservation of the cold blowing process of the coking plant, and comprises a first coal gas water seal, a second coal gas water seal, a first heat tracing pipe and a second heat tracing pipe, an inlet of the first tracing pipe is connected with an outlet of the oil depot dehydration pipeline tracing pipe, the second tracing pipe is arranged on the outer surface of the second gas water seal, and an inlet of the second tracing pipe is connected with an outlet of the crude benzene deslagging pipeline tracing pipe. According to the system, heat tracing steam in the oil depot dehydration pipeline heat tracing pipe and the crude benzene deslagging pipeline heat tracing pipe is used for heat tracing of the first gas water seal and the second gas water seal, a large amount of steam consumption is saved, and effective utilization of energy is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy saving in a cold drum process of a coking plant, and more specifically relates to a coal gas water seal system. Background Art

[0002] The coking plant's oil depot dewatering pipeline serves as a drainage channel for the tar tanks, two crude benzene tanks, and the oil wash tanks in the oil depot area. Because the water discharged from these tanks contains tar, benzene compounds, and wash oil, among other toxic and hazardous substances, it cannot be discharged directly into the underground pipeline network due to environmental protection requirements, as this would pollute groundwater and environmental water quality. Therefore, it must be discharged into a mechanized ammonia clarifier for treatment, generating circulating ammonia water and heavy tar. The remaining ammonia water is then processed in the coking plant wastewater treatment station. The crude benzene slag discharge pipeline, used to discharge slag from the crude benzene regenerator, contains impurities such as benzene compounds and naphthalene, and also requires treatment in a mechanized ammonia clarifier. Due to the length of these two pipelines, they require insulation in winter, typically using steam tracing. Directly discharging these two insulated and heated pipelines into the cold drum process drain well wastes energy, increases the amount of circulating ammonia water, and increases the ammonia steam load.

[0003] Gas water seals also need to be insulated in winter. Otherwise, they can become blocked and prevent the gas system from draining. If water accumulates in the gas pipeline, the system will experience excessive resistance, leading to production interruptions, serious gas system failures, and gas leaks. Existing technologies typically use independent heated steam pipes for gas water seals, wasting energy. Utility Model Content

[0004] The utility model aims to provide a gas water seal system to solve the problem of energy waste caused by adopting an independent heating steam pipeline for the gas water seal in the cold drum process of a coking plant in the prior art.

[0005] In order to achieve the above-mentioned object, the utility model provides a gas water seal system for use in the cold drum process of a coking plant, the system comprising:

[0006] First gas water seal;

[0007] Second gas water seal;

[0008] a first heating pipe, the first heating pipe being arranged on the outer surface of the first gas water seal, the inlet of the first heating pipe being connected to the outlet of the heating pipe of the oil depot dehydration pipeline;

[0009] The second heating pipe is arranged on the outer surface of the second gas water seal, and the inlet of the second heating pipe is connected to the outlet of the heating pipe of the crude benzene slag discharge pipeline.

[0010] Optionally, the inlet of the first heating pipe is connected to the outlet of the heating pipe of the oil depot dehydration pipeline through a first straight pipe, and the inlet of the first heating pipe is lower than the outlet of the heating pipe of the oil depot dehydration pipeline;

[0011] The inlet of the second heating pipe is connected to the outlet of the heating pipe of the crude benzene slag discharge pipeline through a second straight pipe, and the inlet of the second heating pipe is lower than the outlet of the heating pipe of the crude benzene slag discharge pipeline.

[0012] Optionally, a drain pipe and an exhaust pipe are provided on the top of the first gas water seal and the second gas water seal.

[0013] Optionally, the outlet of the first heating pipe is connected to a drainage well.

[0014] Optionally, the outlet of the second heating pipe is connected to a drainage well.

[0015] Optionally, the first heating pipe is spirally coiled around the outer surface of the first gas water seal.

[0016] Optionally, the second heating pipe is spirally coiled around the outer surface of the second gas water seal.

[0017] Optionally, a steam trap is provided at the connection between the first heating pipe and the drainage well.

[0018] Optionally, a steam trap is provided at the connection between the second heating pipe and the drainage well.

[0019] Optionally, the heating medium in the first heating pipe and the second heating pipe is steam.

[0020] The beneficial effects of the present invention are: providing a gas water seal system comprising: a first gas water seal, a second gas water seal, a first heat tracing pipe, and a second heat tracing pipe. The first heat tracing pipe is disposed on the outer surface of the first gas water seal, the inlet of the first heat tracing pipe being connected to the outlet of the heat tracing pipe of the oil depot dehydration pipeline; the second heat tracing pipe is disposed on the outer surface of the second gas water seal, the inlet of the second heat tracing pipe being connected to the outlet of the heat tracing pipe of the crude benzene slag discharge pipeline. The system utilizes the heat tracing steam within the heat tracing pipe of the oil depot dehydration pipeline and the heat tracing pipe of the crude benzene slag discharge pipeline to heat the first and second gas water seals, thereby saving a large amount of steam consumption and achieving efficient energy utilization.

[0021] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0023] Figure 1 The figure shows a schematic structural diagram of a gas water seal system according to an embodiment of the present invention.

[0024] Description of reference numerals:

[0025] 1. First gas water seal; 2. Second gas water seal; 3. First heating pipe; 4. Second heating pipe; 5. First straight pipe; 6. Second straight pipe; 7. Drain pipe; 8. Exhaust pipe; 9. Drain well; 10. Steam trap. DETAILED DESCRIPTION

[0026] The following describes preferred embodiments of the present invention in greater detail. Although preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0027] like Figure 1 As shown, this embodiment provides a gas water seal system for use in a cold drum process of a coking plant. The system includes:

[0028] First gas water seal 1;

[0029] Second gas water seal 2;

[0030] A first heating pipe 3, which is arranged on the outer surface of the first gas water seal 1, and the inlet of the first heating pipe 3 is connected to the outlet of the heating pipe of the oil dehydration pipeline;

[0031] The second heating pipe 4 is provided on the outer surface of the second gas water seal 2, and the inlet of the second heating pipe 4 is connected to the outlet of the heating pipe of the crude benzene slag discharge pipeline.

[0032] Specifically, the system uses the heating steam in the heating pipe of the oil dehydration pipeline and the heating pipe of the crude benzene slag discharge pipeline to heat the first gas water seal 1 and the second gas water seal 2. There is no need to set up independent heating steam sources for the first gas water seal 1 and the second gas water seal 2, which saves a lot of steam consumption and realizes efficient use of energy.

[0033] Optionally, the inlet of the first heating pipe 3 is connected to the outlet of the heating pipe of the oil depot dehydration pipeline through the first straight pipe 5, and the inlet of the first heating pipe 3 is lower than the outlet of the heating pipe of the oil depot dehydration pipeline;

[0034] The inlet of the second heat tracing pipe 4 is connected with the outlet of the heat tracing pipe of the crude benzene discharge pipeline through the second straight pipe 6, and the inlet of the second heat tracing pipe 4 is lower than the outlet of the heat tracing pipe of the crude benzene discharge pipeline.

[0035] Specifically, the first straight pipe 5 and the second straight pipe 6 are inclinedly arranged, so that the climbing of the pipeline can be avoided.

[0036] Optionally, the top of the first coal gas water seal 1 and the second coal gas water seal 2 is respectively provided with a liquid discharge pipe 7 and a gas discharge pipe 8.

[0037] Specifically, the liquid discharge pipe 7 is used for discharging the liquid in the coal gas, so as to avoid the increase of the resistance of the coal gas system due to too much liquid in the coal gas; and the gas discharge pipe 8 is used for diffusing the gas such as coal gas and steam, so as to avoid the excessive pressure.

[0038] Optionally, the outlet of the first heat tracing pipe 3 is connected with a drainage well 9.

[0039] Optionally, the outlet of the second heat tracing pipe 4 is connected with the drainage well 9.

[0040] Specifically, the outlet of the first heat tracing pipe 3 and the outlet of the second heat tracing pipe 4 are both connected with the drainage well 9 for discharging the waste water.

[0041] Optionally, the first heat tracing pipe 3 is spirally wound on the outer surface of the first coal gas water seal 1.

[0042] Optionally, the second heat tracing pipe 4 is spirally wound on the outer surface of the second coal gas water seal 2.

[0043] Specifically, the spiral shape can increase the contact area between the pipeline and the coal gas water seal, and the heat tracing effect is better.

[0044] Optionally, a trap 10 is arranged at the connection position of the first heat tracing pipe 3 and the drainage well 9.

[0045] Optionally, the trap 10 is arranged at the connection position of the second heat tracing pipe 4 and the drainage well 9.

[0046] Specifically, the trap 10 is used for discharging the condensed water in the pipeline, so as to avoid the freezing of the pipeline.

[0047] Optionally, the heat tracing medium in the first heat tracing pipe 3 and the second heat tracing pipe 4 is steam.

[0048] The above has described the embodiments of the present application, and the above description is exemplary, is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A gas water seal system for use in the cold drum process of a coking plant, characterized in that: The system includes: First gas water seal (1); Second gas water seal (2); A first heating pipe (3), the first heating pipe (3) being arranged on the outer surface of the first gas water seal (1), the inlet of the first heating pipe (3) being connected to the outlet of the heating pipe of the oil depot dehydration pipeline; A second heating pipe (4) is provided on the outer surface of the second gas water seal (2), and an inlet of the second heating pipe (4) is connected to an outlet of the heating pipe of the crude benzene slag discharge pipeline.

2. The gas water seal system according to claim 1, characterized in that: The inlet of the first heating pipe (3) is connected to the outlet of the heating pipe of the oil depot dehydration pipeline through a first straight pipe (5), and the inlet of the first heating pipe (3) is lower than the outlet of the heating pipe of the oil depot dehydration pipeline; The inlet of the second heating pipe (4) is connected to the outlet of the heating pipe of the crude benzene slag discharge pipeline through a second straight pipe (6), and the inlet of the second heating pipe (4) is lower than the outlet of the heating pipe of the crude benzene slag discharge pipeline.

3. The gas water seal system according to claim 1, characterized in that: A liquid drain pipe (7) and an exhaust pipe (8) are provided on the top of each of the first gas water seal (1) and the second gas water seal (2).

4. The gas water seal system according to claim 1, characterized in that: The outlet of the first heating pipe (3) is connected to a drainage well (9).

5. The gas water seal system according to claim 1, characterized in that: The outlet of the second heating pipe (4) is connected to a drainage well (9).

6. The gas water seal system according to claim 1, characterized in that: The first heating pipe (3) is spirally wound around the outer surface of the first gas water seal (1).

7. The gas water seal system according to claim 1, characterized in that: The second heating pipe (4) is spirally wound around the outer surface of the second gas water seal (2).

8. The gas water seal system according to claim 4, characterized in that: A steam trap (10) is provided at the connection between the first heating pipe (3) and the drainage well (9).

9. The gas water seal system according to claim 5, characterized in that: A steam trap (10) is provided at the connection between the second heating pipe (4) and the drainage well (9).

10. The gas water seal system according to claim 1, characterized in that: The heating medium in the first heating pipe (3) and the second heating pipe (4) is steam.

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