CN219333187U

CN219333187U - Acetylene production vapor recovery unit

Info

Publication number: CN219333187U
Application number: CN202320451325.6U
Authority: CN
Inventors: 霍明庆; 李淑明; 霍冰冰
Original assignee: Changzhi Huojia Industry Co ltd
Current assignee: Changzhi Huojia Industry Co ltd
Priority date: 2023-03-10
Filing date: 2023-03-10
Publication date: 2023-07-14
Anticipated expiration: 2033-03-10

Abstract

The utility model discloses an evaporation steam recovery device for acetylene production, and relates to the technical field of waste gas recovery; the feed inlet of the slurry buffer tank is connected with a carbide slurry overflow pipe; the gas outlet of the gas-water separator is connected with the gas buffer tank through a second pipeline, and the gas outlet of the gas-water separator is provided with an oxygen content online analyzer; the first pipeline and the second pipeline are both provided with electromagnetic cut-off valves; the device can effectively improve the production environment of acetylene working procedures, eliminate the potential safety hazard caused by acetylene gas in the air, fully recover the acetylene gas in acetylene sludge slurry and improve the purity of the recovered acetylene gas.

Description

Acetylene production vapor recovery unit

Technical Field

The utility model relates to the technical field of waste gas recovery, relates to acetylene production, and in particular relates to an evaporation gas recovery device for acetylene production.

Background

Carbide slag slurry is generated in the acetylene production process, and is fine particles generated by exothermic reaction of calcium carbide and water, wherein the mass fraction of the carbide slag slurry is 20 percent, and about 80 percent of acetylene gas and solid particles Ca (OH) are formed ₂ In combination, 20% of acetylene gas was dissolved in the liquid phase. The acetylene gas carried in the slurry is generated under the condition of illumination, so that the environment is polluted by direct discharge, and the chloroacetylene gas is easy to explode when illuminated in the aqueous solution, so that great potential safety hazard exists.

At present, the method for preventing the acetylene gas carried in the slurry is to desorb the acetylene gas from the solid phase and the liquid phase by vacuumizing. However, the method cannot sufficiently remove the acetylene gas, the treatment efficiency is low, the purity of the acetylene gas at the analysis position is poor, and the acetylene gas cannot be directly recycled.

Disclosure of Invention

The utility model overcomes the defects of the prior art and provides an evaporation steam recovery device for acetylene production. So as to effectively recycle acetylene gas in the carbide slag slurry.

In order to achieve the above purpose, the present utility model is realized by the following technical scheme.

An evaporated steam recovery device for acetylene production comprises a slurry buffer tank, a desorption tower, a cooler, a steam-water separator, a flame arrester and a gas buffer tank; the feed inlet of the slurry buffer tank is connected with a carbide slurry overflow pipe; the gas outlet of the steam-water separator is connected with a flame arrester through a first pipeline, the gas outlet of the steam-water separator is connected with the gas buffer tank through a second pipeline, and the gas outlet of the steam-water separator is provided with an oxygen content online analyzer; the first pipeline is provided with a first electromagnetic cut-off valve, and the second pipeline is provided with a second electromagnetic cut-off valve.

Further, the slurry pipeline is connected with a slurry pump.

Further, a water ring vacuum pump is arranged on a pipeline connected with the cooler and the steam-water separator.

Further, the cooler is connected with a safe water seal groove.

Further, the gas buffer tank is connected with an acetylene cabinet through an acetylene gas main pipe.

Further, the acetylene gas main pipe is connected with a flowmeter.

Further, the bottom of the desorption tower is connected with a slurry tank.

Further, a gas outlet of the steam-water separator is connected with the sample gas cooler, the oxygen content online analyzer is arranged at the gas outlet of the sample gas cooler, and the gas outlet of the sample gas cooler is respectively connected with the first pipeline and the second pipeline.

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

according to the utility model, the calcium carbide slurry can be rapidly subjected to flash evaporation and desorption under the negative pressure state through the desorption tower; the separated acetylene gas is cooled by a cooler to remove water in the acetylene gas; the dehydrated acetylene gas is pumped into a steam-water separator through a water ring vacuum pump, then is cooled through a sample gas cooler, enters an oxygen content online analyzer for real-time monitoring of the oxygen content, and is discharged from a cut-off valve through a flame arrester when the oxygen content is higher than 1%, and is metered through a flow meter from the cut-off valve through a gas buffer tank when the oxygen content is lower than 1% (1%), and then enters an acetylene gas main pipe for delivering into an acetylene gas holder.

The device can effectively improve the production environment of acetylene working procedures, eliminate the potential safety hazard caused by acetylene gas in the air, fully recover the acetylene gas in acetylene sludge slurry, improve the purity of the recovered acetylene gas, and bring certain economic benefit to enterprises.

Drawings

Fig. 1 is a schematic connection diagram of an evaporation vapor recovery device for acetylene production according to the present utility model.

In the figure, a 1-slurry buffer tank, a 2-desorption tower, a 3-cooler, a 4-steam-water separator, a 5-flame arrester, a 6-gas buffer tank, a 7-carbide slurry overflow pipe, an 8-slurry pipeline, a 9-first pipeline, a 10-second pipeline, an 11-oxygen content online analyzer, a 12-first electromagnetic cut-off valve, a 13-second electromagnetic cut-off valve, a 14-slurry pump, a 15-water ring vacuum pump, a 16-safe water seal tank, a 17-acetylene gas main pipe, an 18-acetylene gas tank, a 19-flowmeter, a 20-slurry tank and a 21-sample gas cooler.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail by combining the embodiments and the drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. The following describes the technical scheme of the present utility model in detail with reference to examples and drawings, but the scope of protection is not limited thereto.

Referring to fig. 1, the embodiment provides an evaporated gas recovery device for acetylene production, which comprises a slurry buffer tank 1, a desorption tower 2, a cooler 3, a steam-water separator 4, a flame arrester 5 and a gas buffer tank 6; the feed inlet of the slurry buffer tank 1 is connected with a carbide slurry overflow pipe 7; the carbide slag slurry overflowed from the generator enters the slag slurry buffer tank 1 through the carbide slag slurry overflow pipe 7, so that the carbide slag slurry is settled. The discharge port of the slurry buffer tank 1 is connected with the desorption tower 2 through a slurry pipeline 8, and the slurry pipeline 8 is connected with a slurry pump 14. The calcium carbide slurry entering the desorption tower 2 is subjected to flash evaporation desorption under the negative pressure state; the bottom of the desorption tower 2 is connected with a slag slurry tank 20, and the carbide slag slurry after desorption enters the slag slurry tank 20 from the bottom of the desorption tower 2. The gas outlet of the desorption tower 2 is connected with a cooler 3, the desorbed acetylene gas is cooled by the cooler 3, the water in the acetylene gas is removed, and the condensed water is discharged into a safe water seal groove 16.

The cooler 3 is connected with the steam-water separator 4, and a water ring vacuum pump 15 is arranged on a pipeline connected with the steam-water separator 4 and the cooler 3. The gas outlet of the steam-water separator 4 is connected with a sample gas cooler 21, an oxygen content online analyzer 11 is arranged at the gas outlet of the sample gas cooler 21, and the gas outlet of the sample gas cooler 21 is respectively connected with a first pipeline 9 and a second pipeline 10. The first pipeline 9 is connected with the flame arrester 5, the second pipeline 10 is connected with the gas buffer tank 6, the first pipeline 9 is provided with a first electromagnetic cut-off valve 12, and the second pipeline 10 is provided with a second electromagnetic cut-off valve 13. The dehydrated acetylene gas is sent into a steam-water separator 4 through a water ring vacuum pump 15, further dehydrated and then enters a sample gas cooler 21, after cooling, the cooled acetylene gas enters an oxygen content on-line analyzer 11 for real-time monitoring of the oxygen content, and when the oxygen content is higher than 1%, the acetylene gas is emptied from a first electromagnetic cut-off valve 12 through a flame arrester 5, and when the oxygen content is lower than 1% (1%) for example, the acetylene gas enters a gas buffer tank 6 from a second electromagnetic cut-off valve 13. The gas buffer tank 6 is connected with an acetylene cabinet 18 through an acetylene gas main pipe 17. The acetylene manifold 17 is connected to a flow meter 19. Acetylene gas is metered by a flowmeter 19 through a gas buffer tank 6 and then enters an acetylene gas main pipe 17 to be sent to an acetylene gas cabinet 18.

The working principle is as follows: the device can rapidly carry out flash evaporation and desorption on the calcium carbide slurry under the negative pressure state through the desorption tower 2; the separated acetylene gas is cooled by a cooler 3 to remove water in the acetylene gas; the dehydrated acetylene gas is sent into a steam-water separator 4 through a water ring vacuum pump 15, then is cooled through a sample gas cooler 21, enters an oxygen content on-line analyzer 11 for real-time monitoring of the oxygen content, and is discharged from a cut-off valve through a flame arrester 5 when the oxygen content is higher than 1%, and is metered through a flow meter from the cut-off valve through a gas buffer tank 6 when the oxygen content is lower than 1% (1%), and then enters an acetylene gas main pipe to be sent into an acetylene gas cabinet 18 for recovery.

While the utility model has been described in detail in connection with specific preferred embodiments thereof, it is not to be construed as limited thereto, but rather as a result of a simple deduction or substitution by a person having ordinary skill in the art to which the utility model pertains without departing from the scope of the utility model defined by the appended claims.

Claims

1. The evaporated steam recovery device for acetylene production is characterized by comprising a slurry buffer tank (1), a desorption tower (2), a cooler (3), a steam-water separator (4), a flame arrester (5) and a gas buffer tank (6); the feed inlet of the slurry buffer tank (1) is connected with a carbide slurry overflow pipe (7); the discharging port of the slurry buffer tank (1) is connected with the desorption tower (2) through a slurry pipeline (8), the gas outlet of the desorption tower (2) is connected with a cooler (3), the cooler (3) is connected with a vapor-water separator (4), the gas outlet of the vapor-water separator (4) is connected with a flame arrester (5) through a first pipeline (9), the gas outlet of the vapor-water separator (4) is connected with a gas buffer tank (6) through a second pipeline (10), and the gas outlet of the vapor-water separator (4) is provided with an oxygen content online analyzer (11); the first pipeline (9) is provided with a first electromagnetic cut-off valve (12), and the second pipeline (10) is provided with a second electromagnetic cut-off valve (13).

2. The evaporation vapor recovery device for acetylene production according to claim 1, wherein the slurry pipeline (8) is connected with a slurry pump (14).

3. The device for recovering the evaporated gas in the acetylene production according to claim 1, wherein a water ring vacuum pump (15) is arranged on a pipeline connected with the steam-water separator (4) of the cooler (3).

4. An acetylene production vapor recovery unit according to claim 1, characterized in that the cooler (3) is connected with a safety water seal tank (16).

5. The evaporation vapor recovery device for acetylene production according to claim 1, wherein the gas buffer tank (6) is connected with an acetylene gas tank (18) through an acetylene gas main pipe (17).

6. The device for recycling evaporated gas in acetylene production according to claim 5, wherein the acetylene gas main pipe (17) is connected with a flowmeter (19).

7. The device for recycling evaporated gas in acetylene production according to claim 1, wherein a slag slurry tank (20) is connected to the bottom of the desorption tower (2).

8. The device for recovering the evaporated gas in the acetylene production according to claim 1, wherein a gas outlet of the steam-water separator (4) is connected with a sample gas cooler (21), the oxygen content online analyzer (11) is arranged at the gas outlet of the sample gas cooler (21), and the gas outlet of the sample gas cooler (21) is respectively connected with a first pipeline (9) and a second pipeline (10).