Delayed coking diffused gas recovery treatment device

Abstract

The utility model belongs to the technical field of coking production, and particularly discloses a delayed coking diffused gas recovery treatment device which comprises a cooler, a first exhaust port and a first water outlet are formed in the cooler, the end of the first exhaust port is connected with a separator through a conveying pipeline, and a steam exhaust port, a second water outlet and a condensation water outlet are formed in the bottom of the separator. A second exhaust port is formed in the top of the separator, a first recycling pipeline and a second recycling pipeline are connected to the second exhaust port in parallel, and a centrifugal fan is mounted on the first recycling pipeline; a circulating inlet and a circulating outlet are further formed in one end of the separator, a circulating pipeline is connected between the circulating inlet and the circulating outlet, and a water supplementing pipe and a water outlet pipe are connected to the circulating pipeline; and after the diffused gas is cooled and separated, the gas amount is reduced, part of oil gas is condensed, combustible components are reduced, the conveying safety is improved, final incineration treatment reaches the standard and is discharged, the field operation environment is effectively improved, the adjusting mode is simple, and later maintenance is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of coking production, and in particular relates to a delayed coking vented gas recovery and processing device. Background Art

[0002] Needle coke is a high-quality variety of carbon materials that has been vigorously developed. It is a silver-grey, metallic-luster porous solid. Its structure has obvious flow texture, with large and few pores that are slightly elliptical. The particles have a large aspect ratio and a fibrous or needle-like texture. It has good orientation and electrical and thermal conductivity. It is the main raw material for negative electrode materials for lithium-ion batteries and ultra-high power graphite electrodes for steelmaking. The production process of interphase coke adopts the traditional delayed coking process. After the coke is produced, it needs to be hydraulically decoked after large and small steam blowing, coke foaming and other processes. During this period, the large and small steam blowing produces a small amount of oil, gas and asphalt smoke, which is directly discharged into the atmosphere after being absorbed by industrial water spraying. If the operation is not done properly, it is easy to cause odor on site or discharge some asphalt smoke into the atmosphere. The on-site operating environment is poor and does not meet environmental protection requirements. Utility Model Content

[0003] In view of the problems in the prior art that the combustible components of coking vent gas are relatively high, the transportation safety needs to be improved, the vent gas is difficult to discharge in compliance with the standards, and the on-site working environment is poor, a delayed coking vent gas recovery and treatment device is proposed. The utility model provides the following technical solutions:

[0004] A delayed coking vented gas recovery and treatment device comprises a cooler for receiving vented gas, wherein the cooler is provided with a first exhaust port and a first drain port, the first exhaust port end is connected to a separator for separating steam, vented gas and condensed water through a conveying pipeline, the separator is provided with a steam exhaust port, a second drain port and a condensation drain port at the bottom, the separator is provided with a second exhaust port at the top, a first return pipeline for connecting to a fire cabinet and a second return pipeline for connecting to an incinerator are connected in parallel to the second exhaust port, and a centrifugal fan is installed on the first return pipeline; a circulation inlet and a circulation outlet are also provided at one end of the separator, a circulation pipeline is connected between the circulation inlet and the circulation outlet, a water supply pipe and a water outlet pipe are connected to the circulation pipeline, and the water outlet pipe is provided at the lower side of the water supply pipe; valves are provided on the conveying pipeline, the circulation pipeline, the water supply pipe and the water outlet pipe.

[0005] Preferably, a circulation valve for starting and stopping the circulation is provided between the water supply pipe and the water outlet pipe.

[0006] Preferably, a circulation pump is provided on the circulation pipeline.

[0007] Preferably, the inlet side of the cooler is connected to a spray tank, and a spray head is installed in the spray tank.

[0008] Preferably, the inlet side of the cooler is connected to the spray tank through a feeding pipe, and a feeding fan is installed on the feeding pipe.

[0009] Preferably, a temperature sensor is installed in the cooler.

[0010] Preferably, a pressure gauge is installed on the first recycling pipeline.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] Through the utility model, the amount of discharged gas becomes less after cooling and separation, part of the oil and gas is condensed, the combustible components are reduced, and the transportation safety is increased; the discharged gas is finally incinerated to meet the emission standards, effectively improving the on-site working environment and meeting environmental protection requirements; the adjustment method is simple, and the company's existing equipment can be used for transformation, and the construction is convenient; one-time investment, design, installation and use at the same time as the equipment, avoid complex inspection and maintenance in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] In the attached drawings, 1. cooler; 11. air inlet; 12. first drain outlet; 13. first exhaust outlet; 2. separator; 21. second drain outlet; 22. steam exhaust outlet; 23. condensate drain outlet; 3. centrifugal fan; 4. circulation pipeline; 41. circulation inlet; 42. circulation outlet; 43. circulation valve; 5. delivery pipeline; 6. first return pipeline; 7. second return pipeline; 8. water supply pipe; 9. outlet pipe. DETAILED DESCRIPTION

[0015] The directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the invention of the utility model.

[0016] like Figure 1 As shown, a delayed coking vented gas recovery and processing device is used, which inputs the vented gas into the cooler 1 through the air inlet 11. The cooler 1 is provided with a first exhaust port 13 and a first drain port 12. The air inlet 11 and the first exhaust port 13 are arranged on the upper side of the cooler 1. After the vented gas is cooled, the gas volume is significantly reduced, and part of the oil and gas is condensed, so that the combustible components are reduced, thereby greatly improving the safety of transportation. The first exhaust port 13 end is connected to the separator 2 through the conveying pipeline 5, which is used to effectively separate steam, vented gas and condensed water. Specifically, the air inlet 11 and the first exhaust port 13 are connected by a connecting pipe, and a valve is provided on the connecting pipe to facilitate the adjustment of the vented gas flow rate.

[0017] The bottom of the separator 2 is provided with a steam exhaust port 22, a second drain port 21 and a condensate drain port 23, which respectively process different types of substances to ensure the processing efficiency. The top of the separator 2 is provided with a second exhaust port, on which two return pipelines are connected in parallel: one is the first return pipeline 6 connected to the fire cabinet, and the other is the second return pipeline 7 connected to the incinerator. The first return pipeline 6 is installed with a centrifugal fan 3, which can further separate the moisture therein, and after being pressurized to 4KPa by the centrifugal fan 3, it is discharged to the device incinerator for incineration treatment, ensuring that the emission meets the standards and is environmentally friendly.

[0018] The separator 2 is also provided with a circulation inlet 41 and a circulation outlet 42, which are connected through a circulation pipeline 4, and a water supply pipe 8 and a water outlet pipe 9 are provided on the circulation pipeline 4, and the water outlet pipe 9 is arranged at the lower side of the water supply pipe 8. The cooling water can be recycled, and the resource utilization efficiency is improved. At the same time, valves are provided on the delivery pipeline 5, the circulation pipeline 4, the water supply pipe 8 and the water outlet pipe 9, which are convenient for regulating the flow rate and flow direction, and for replenishing cooling water.

[0019] In order to further optimize the performance of the device, a circulation valve 43 is set between the water supply pipe 8 and the water outlet pipe 9 to control the start and stop of the circulation. A circulation pump is also installed on the circulation pipeline 4 to enhance the flow effect of the circulating water. The inlet side of the cooler 1 is connected to a spray tank, which is equipped with a spray head inside, connected through a feed pipe and equipped with a feed fan to ensure that the vented gas is preliminarily cooled and purified before entering the cooler 1.

[0020] A temperature sensor is also specially installed in cooler 1 to monitor and control the temperature of cooling water in real time, ensuring that the temperature of the exhaust gas is reduced to below 45°C after cooling, further improving the treatment effect.

[0021] This delayed coking vent gas recovery and treatment device can not only effectively recover and treat vent gas and reduce environmental pollution, but also has a simple adjustment method and can be modified using the company's existing equipment, making construction convenient. At the same time, it can be designed, installed and used at the same time as the equipment after one investment, avoiding complex later inspection and maintenance, and providing strong support for the sustainable development of the company.

Claims

1. A delayed coking vent gas recovery and treatment device, characterized in that: The invention comprises a cooler (1) for receiving vented gas, wherein the cooler (1) is provided with a first exhaust port (13) and a first drain port (12), wherein the first exhaust port (13) is connected to a separator (2) for separating steam, vented gas and condensed water via a delivery pipeline (5), wherein the bottom of the separator (2) is provided with a steam exhaust port (22), a second drain port (21) and a condensate drain port (23), wherein the top of the separator (2) is provided with a second exhaust port, and the second exhaust port is connected in parallel with a first return pipeline (6) and a second return pipeline (7) for connecting to a fire cabinet. A second recycling pipeline (7) for connecting to the incinerator, a centrifugal fan (3) is installed on the first recycling pipeline (6); a circulation inlet (41) and a circulation outlet (42) are also provided at one end of the separator (2); a circulation pipeline (4) is connected between the circulation inlet (41) and the circulation outlet (42); a water supply pipe (8) and a water outlet pipe (9) are connected to the circulation pipeline (4); the water outlet pipe (9) is arranged at the lower side of the water supply pipe (8); valves are provided on the conveying pipeline (5), the circulation pipeline (4), the water supply pipe (8) and the water outlet pipe (9).

2. The delayed coking vent gas recovery and processing device according to claim 1, characterized in that: A circulation valve (43) for starting and stopping the circulation is provided between the water supply pipe (8) and the water outlet pipe (9).

3. The delayed coking vent gas recovery and processing device according to claim 1, characterized in that: The circulation pipeline (4) is provided with a circulation pump.

4. The delayed coking vent gas recovery and processing device according to claim 1, characterized in that: The inlet side of the cooler (1) is connected to a spray tank, and a spray head is installed in the spray tank.

5. The delayed coking vent gas recovery and processing device according to claim 4, characterized in that: The inlet side of the cooler (1) is connected to the spray tank via a feed pipe, and a feed fan is installed on the feed pipe.

6. The delayed coking vent gas recovery and processing device according to claim 1, characterized in that: A temperature sensor is installed in the cooler (1).

7. The delayed coking vent gas recovery and processing device according to claim 1, characterized in that: A pressure gauge is installed on the first recycling pipeline (6).

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