CN212594141U

CN212594141U - Device for separating mixed liquid of coke oven gas and tar ammonia water

Info

Publication number: CN212594141U
Application number: CN201922312543.8U
Authority: CN
Inventors: 艾山; 孙风江; 张强; 王景荣; 段宁; 周冠英
Original assignee: Xuanhua Iron and Steel Group Co Ltd
Current assignee: Xuanhua Iron and Steel Group Co Ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2021-02-26
Anticipated expiration: 2029-12-20

Abstract

The device for separating the mixed liquid of the coke oven gas and the tar ammonia water comprises a gas pipe, a gas tar ammonia water pipe, a tar ammonia water outlet pipe, a tar ammonia water intermediate tank, a reducer pipe and a gas recovery pipe; the gas pipe is communicated with the gas tar ammonia water pipe and then communicated with the reducer pipe; the reducer pipe is communicated with the tar ammonia water pipe; the tar ammonia water pipe is communicated with the tar ammonia water intermediate tank; the side surface of the tar ammonia water intermediate tank is communicated with a tar ammonia water outlet pipe; the upper surface of the tar ammonia water intermediate tank is communicated with a gas recovery pipe; the gas recovery pipe is communicated with a gas pipe, and the gas pipe is connected with the primary cooler. The separation device separates the gas tar ammonia water mixture pipeline into an upper pipeline and a lower pipeline, the upper part is the gas pipeline, and the lower part is the tar ammonia water pipe. The pipeline firstly goes upward at a right angle for 1 m and then goes horizontally, and the separated coal gas enters a coal gas primary cooler from a coal gas pipe 1. The advantages are that: safe and reliable, practicality are strong, with low costs, easy operation.

Description

Device for separating mixed liquid of coke oven gas and tar ammonia water

The technical field is as follows:

the utility model relates to a coke oven gas clean system production facility technical field especially relates to a device that coke oven gas and tar ammonia water mixed liquid separate.

Background art:

in the prior art, the mixed solution of coke oven gas and tar ammonia water generated in the coking production process is conveyed from a raw gas pipeline to a gas purification system under the action of a full negative pressure gas aspirator, and the subsequent purification process can be carried out only after the gas and the tar ammonia water are separated in the gas purification system. The gas is cooled and then the ammonia, hydrogen sulfide, benzene hydrocarbon and other substances contained in the gas are washed, and the gas is used for producing products such as ammonium sulfate, sulfuric acid, light benzene and the like. Wherein, the tar ammonia water is separated from the coal gas and then is separated from the tar and the ammonia water. If the coal gas and the tar ammonia water are not separated, the subsequent coal gas purification and coke oven production cannot be carried out. The design of the device which can separate the coal gas from the tar ammonia water and can convey the separated substances can timely and continuously separate the mixed liquid of the coke oven gas and the tar ammonia water which enter a coal gas purification system, and is the urgent problem for solving the problems of coal gas purification and coke oven production.

The utility model has the following contents:

the utility model aims at overcoming the defects of the prior art, providing a device which can quickly separate coke oven gas and tar ammonia water entering a gas purification system, laying a foundation for gas purification and coke oven production, and separating the coke oven gas from the tar ammonia water with high efficiency, safety and reliability.

The utility model discloses a solve the technical scheme that above-mentioned problem provided and be: a separation device for coke oven gas and tar ammonia water comprises a gas pipe, a gas tar ammonia water pipe, a tar ammonia water pipe and a tar ammonia water outlet pipe; it is characterized by also comprising a tar ammonia water intermediate tank, a reducer pipe and a coal gas recovery pipe; the gas pipe is communicated with the gas tar ammonia water pipe and then communicated with the reducer pipe; the reducer pipe is communicated with the tar ammonia water pipe; the tar ammonia water pipe is communicated with the tar ammonia water intermediate tank; the side surface of the tar ammonia water intermediate tank is communicated with a tar ammonia water outlet pipe; the upper surface of the tar ammonia water intermediate tank is communicated with a gas recovery pipe; the gas recovery pipe is communicated with a gas pipe, and the gas pipe is connected with the primary cooler. It is also characterized in that: the separation device separates the gas, tar and ammonia water mixture pipeline into an upper pipeline and a lower pipeline, wherein the upper part is a gas pipeline, and the lower part is a tar and ammonia water pipe. The gas pipe is a pipeline separated from the gas tar ammonia water pipe upwards, the diameter of the gas pipe is the same as that of the gas tar ammonia water pipe, the gas pipe and the gas tar ammonia water pipe are phi 1200 pipes, the pipeline firstly extends upwards in a right angle for 1 meter and then extends horizontally, and the separated gas enters the gas primary cooler from the gas pipe 1.

The utility model has the advantages that: the device of the embodiment has the advantages of safety, reliability, strong practicability, low cost and simple operation.

Description of the drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present invention.

In the drawings: 1. a gas pipe; 2, a gas recovery pipe; 3, a coal gas tar ammonia water pipe; 4, a tar ammonia water pipe; 5, a tar ammonia water intermediate tank; 6, a reducer pipe; 7 a tar ammonia water outlet pipe.

The specific implementation mode is as follows:

the present invention will be described in further detail with reference to the accompanying drawings and examples. A separation device for coke oven gas and tar ammonia water comprises a gas pipe 1, a gas recovery pipe 2, a gas tar ammonia water pipe 3, a tar ammonia water pipe 4, a tar ammonia water intermediate tank 5, a reducer pipe 6 and a tar ammonia water outlet pipe 7; the gas pipe 1 is communicated with the gas tar ammonia water pipe 3 and then communicated with the reducer pipe 6; the reducer pipe 6 is communicated with the tar ammonia water pipe 4; the tar ammonia water pipe 4 is communicated with the tar ammonia water intermediate tank 5; the side surface of the tar ammonia water intermediate tank 5 is communicated with a tar ammonia water outlet pipe 7; the upper surface of the tar ammonia water intermediate tank 5 is communicated with a coal gas recovery pipe 2; the gas recovery pipe 2 is communicated with the gas pipe 1, and the gas pipe 1 is connected with the primary cooler. The utility model discloses a theory of operation is: raw coke oven gas from the coke oven is sucked to a gas purification system together with tar ammonia water by a full negative pressure gas aspirator, and then gas-liquid separation is carried out. Raw gas, tar and ammonia water enter a gas tar ammonia water pipe 3, the gas flows to a primary cooler from an upper gas pipeline 1 of a gas-liquid separation device, the separated gas is cooled to 18-22 ℃ by the primary cooler, and then subsequent procedures of electrically capturing tar and washing are carried out; the tar ammonia water naturally flows into a tar ammonia water intermediate tank 5 through a reducer pipe 6 and a tar ammonia water pipe 4 at the lower part of the separator, then enters a tar residue separation box, and is subjected to a tar and ammonia water separation process after tar residue is removed; in the gas-liquid separation process, a small amount of coal gas carried in the tar ammonia water mixed solution enters the coal gas pipeline 1 from the coal gas recovery pipe 2, enters the primary cooler along with the separated coal gas, and the separated tar ammonia water is discharged from the tar ammonia water outlet pipe 7. The gas, tar and ammonia water mixture pipeline is divided into an upper pipeline and a lower pipeline, the upper part is a gas pipeline, and the lower part is a tar ammonia water pipeline; the gas pipeline is a pipeline separated upwards from the mixture pipeline, the diameter of the pipeline is the same as that of the mixture pipeline, the pipeline is phi 1200, the pipeline firstly runs upwards in a right angle for 1 m and then runs horizontally, and the separated gas enters the gas primary cooler from the gas pipeline; the tar ammonia water pipeline is positioned at the lower part of the separation device, the original phi 1200 gas pipeline is changed into a phi 800 pipeline, a phi 1400 intermediate tank is arranged behind the phi 800 pipeline, the separated tar ammonia water flows into the tar residue separation tank after entering the tar ammonia water intermediate tank from the pipeline, and then enters the tar ammonia water separation tank after the tar residue is removed, so that the tar and the ammonia water are separated; the gas recovery pipe is a phi 200 recovery pipe which connects the gas carried in the tar ammonia water with the gas pipeline from the top of the middle tank, enters the negative pressure gas pipeline, and enters the gas primary cooler together with the separated gas; the reducer pipe changes a phi 1200 gas, tar and ammonia water mixture pipeline into a phi 800 pipeline, and the gas cannot pass through the pipeline under the condition that the tar and the ammonia water smoothly pass through the pipeline.

Claims

1. A device for separating a mixed liquid of coke oven gas and tar ammonia water comprises a gas pipe (1), a gas tar ammonia water pipe (3), a tar ammonia water pipe (4) and a tar ammonia water outlet pipe (7); it is characterized by also comprising a tar ammonia water intermediate tank (5), a reducer pipe (6) and a coal gas recovery pipe (2); the gas pipe (1) is communicated with the gas tar ammonia water pipe (3) through a pipeline and then communicated with the reducer pipe (6); the reducer pipe (6) is communicated with the tar ammonia water pipe (4); the tar ammonia water pipe (4) is communicated with the tar ammonia water intermediate tank (5); the side surface of the tar ammonia water intermediate tank (5) is communicated with a tar ammonia water outlet pipe (7); the upper surface of the tar ammonia water intermediate tank (5) is communicated with a coal gas recovery pipe (2); the coal gas recovery pipe (2) is communicated with the coal gas pipe (1), and the coal gas pipe (1) is connected with the primary cooler.

2. The device for separating the mixed liquid of the coke oven gas and the tar ammonia water as claimed in claim 1, which is characterized in that: the device divides the gas tar ammonia water mixture pipeline into an upper pipeline and a lower pipeline, wherein the upper part is a gas pipeline, and the lower part is a tar ammonia water pipe.

3. The device for separating the mixed liquid of the coke oven gas and the tar ammonia water as claimed in claim 1, which is characterized in that: the coal gas pipe (1) is a pipeline upwards separated from the coal gas tar ammonia water pipe (3), the diameter of the coal gas pipe (1) is the same as that of the coal gas tar ammonia water pipe (3), the diameter of the coal gas pipe and the diameter of the coal gas tar ammonia water pipe are respectively phi 1200 pipes, the pipeline firstly goes upwards by 1 meter at a right angle and then goes towards the horizontal direction, and the separated coal gas enters the coal gas primary cooler from the coal gas pipe (1).