CN219091174U

CN219091174U - Acetylene recovery device in carbide slag slurry

Info

Publication number: CN219091174U
Application number: CN202223294812.0U
Authority: CN
Inventors: 刘东平; 刘文喜; 晏新; 何万千; 王伟屏; 屈强; 章志高; 石建平; 祝晓辉
Original assignee: Kingboard Hengyang Industrial Co ltd
Current assignee: Kingboard Hengyang Industrial Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-05-30
Anticipated expiration: 2032-12-09

Abstract

The utility model relates to the technical field of acetylene recovery, in particular to an acetylene recovery device in acetylene sludge, which comprises an acetylene generator, wherein an overflow pipe on the acetylene generator is respectively communicated with a first sludge buffer tank and a second sludge buffer tank through a first tee pipe, the first sludge buffer tank and the second sludge buffer tank are respectively communicated with a first sludge pump and a second sludge pump, and a first sludge pump and a second sludge pump are respectively communicated with a discharge port of the second sludge pump through a second tee pipe. The acetylene recovery device has no three wastes and no other waste emission, can effectively recover acetylene gas in acetylene sludge slurry, solves the problem that dissolved acetylene gas is volatilized and discharged into the atmosphere, reduces environmental pollution, and reduces the potential safety hazard of acetylene unorganized release; the acetylene recovery device is used for recovering acetylene, the purity of the recovered acetylene can be used for PVC production, the production cost is saved, and the economic benefit is improved.

Description

Acetylene recovery device in carbide slag slurry

Technical Field

The utility model relates to the technical field of acetylene recovery, in particular to an acetylene recovery device in carbide slag slurry.

Background

The PVC production line is divided into three parts, namely an acetylene generating system, a conversion synthesis system and a polymerization system, wherein the acetylene generating system is mainly formed by crushing calcium carbide through a crusher, conveying the crushed calcium carbide into a generator by a belt, reacting the calcium carbide with water in the generator, conveying generated acetylene gas into a next process for treatment, discharging carbide slag and solution after reacting with the calcium carbide through an overflow port and a bottom slag discharge port of the generator, conveying all the solution discharged from the generator into a concentration tank by pumping, and along with the rapid development of economy, the energy and raw material supply of each industry is more and more tensioned, and the calcium carbide is used as a high-energy product, so that the consumption reduction of the calcium carbide is critical to the cost control for enterprises using the calcium carbide as the raw material, especially for enterprises adopting the calcium carbide PVC production process, and the slag slurry discharged from the generator contains a certain amount of acetylene mainly in the form of dissolved acetylene and unreacted calcium carbide small nucleus, wherein the content is generally in the range of 250-400 mg/L.

The existing calcium carbide clear liquid recycling process commonly used in the industry generally needs to be subjected to large-area sedimentation, filter pressing and spray cooling, because the partial pressure of acetylene in the air is almost zero, the acetylene in the slag slurry is released into the air after the slag slurry contacts the air, so that the calcium carbide clear liquid recycling process is energy-saving and consumption-reducing, the acetylene gas is discharged into the atmosphere and belongs to the unstructured emission greenhouse gas, the odor is bad, the operating environment is deteriorated, meanwhile, the acetylene gas released by the slag slurry is inflammable and explosive gas, the direct discharge at the periphery of a production device is a potential safety hazard, and the potential safety hazard exists for the follow-up filter pressing, the storage point of the calcium carbide slag and the like.

Disclosure of Invention

The utility model aims to provide an acetylene recovery device in carbide slag slurry, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an acetylene recovery unit in carbide slag thick liquid, includes the acetylene generator, overflow pipe on the acetylene generator is through three-way pipe one with slag thick liquid buffer tank one and slag thick liquid buffer tank two intercommunication each other, slag thick liquid buffer tank one with the feed inlet of slag thick liquid pump two respectively intercommunication slag thick liquid pump one and slag thick liquid pump two, slag thick liquid pump one with the discharge gate of slag thick liquid pump two all communicates the vacuum degassing tower inside through three-way pipe two, exhaust hole on the vacuum degassing tower passes through the inlet end of acetylene cooler one, the inlet end of acetylene cooler two is passed through pipeline intercommunication acetylene cooler one's exhaust end, the inlet end of acetylene cooler two is passed through to the exhaust end intercommunication vacuum pump, the inlet end of vacuum pump intercommunication foam catcher, the exhaust end intercommunication of foam catcher has the acetylene header before the quiet process.

Specifically, the overflow pipe, the pipeline for communicating the acetylene generator with the first slurry buffer tank and the pipeline for communicating the acetylene generator with the second slurry buffer tank are all airtight heat-insulating materials.

Preferably, a feed inlet is fixedly arranged at the top of the acetylene generator, and the feed inlet is communicated with the inside of the acetylene generator.

Preferably, the overflow pipe is positioned on the side wall of the barrel body of the acetylene generator, and the overflow pipe is communicated with the inside of the acetylene generator.

Preferably, a first discharge port is formed in the bottom of the slurry buffer tank, and is used for discharging waste materials.

Preferably, a second discharge port is formed in the bottom of the second slurry buffer tank and is used for discharging waste materials.

Preferably, a slag discharging port is formed in the bottom of the vacuum degassing tower, and the slag discharging port is communicated with a slag slurry discharging tank.

Preferably, an oxygen on-line detector is fixedly arranged on the acetylene main pipe before the quiet working procedure.

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

the acetylene recovery device has no three wastes and no other waste emission, can effectively recover acetylene gas in acetylene sludge slurry, solves the problem that dissolved acetylene gas is volatilized and discharged into the atmosphere, reduces environmental pollution, and reduces the potential safety hazard of acetylene unorganized release.

The acetylene recovery device is used for recovering acetylene, the purity of the recovered acetylene can be used for PVC production, the production cost is saved, and the economic benefit is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a second schematic diagram of the overall structure of the present utility model;

fig. 3 is a schematic top view of the present utility model.

In the figure: 1. an acetylene generator; 101. an overflow pipe; 102. a feed inlet; 2. a three-way pipe I; 3. a slag slurry buffer tank I; 301. a first discharge port; 4. a second slurry buffer tank; 401. a second discharge port; 5. a slurry pump I; 6. a slurry pump II; 7. a T-pipe II; 8. a vacuum degassing tower; 801. an exhaust hole; 802. a slag discharge port; 9. an exhaust duct; 10. an acetylene cooler I; 11. an acetylene cooler II; 12. a vacuum pump; 13. an acetylene cooler III; 14. a foam catcher; 15. acetylene main pipe before the cleaning process; 16. an oxygen on-line detector.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are obtained by a worker of ordinary skill in the art without creative efforts, are within the protection scope of the present utility model based on the embodiments of the present utility model.

Referring to fig. 1 to 3, the present utility model provides a technical solution: the utility model provides an acetylene recovery unit in carbide slag thick liquid, including acetylene generator 1, overflow pipe 101 on the acetylene generator 1 is through three-way pipe one 2 with slag thick liquid buffer tank one 3 and slag thick liquid buffer tank two 4 intercommunication each other, slag thick liquid buffer tank one 3 and slag thick liquid buffer tank two 4 communicate the feed inlet of slag thick liquid pump one 5 and slag thick liquid pump two 6 respectively, the discharge gate of slag thick liquid pump one 5 and slag thick liquid pump two 6 all communicates vacuum degassing tower 8 inside through three-way pipe two 7, exhaust hole 801 on the vacuum degassing tower 8 communicates the inlet of acetylene cooler one 10 through exhaust pipe 9, the inlet of acetylene cooler two 11 is passed through the pipeline intercommunication to the exhaust end of acetylene cooler one 10, the inlet of vacuum pump 12 is passed through to the exhaust end of acetylene cooler two 11, the inlet of vacuum pump 12 is passed through to the exhaust end of vacuum pump 12, the exhaust end of vacuum pump 14 is passed through to the inlet of foam catcher 14, the exhaust end of acetylene header 15 has before the static process.

Specifically, the overflow pipe 101, the pipeline for communicating the acetylene generator 1 with the slurry buffer tank I3 and the pipeline for communicating the acetylene generator 1 with the slurry buffer tank II 4 are all airtight heat-insulating materials.

In this embodiment, a feed inlet 102 is fixedly installed at the top of the acetylene generator 1, and the feed inlet 102 is communicated with the interior of the acetylene generator 1.

In this embodiment, the overflow pipe 101 is located on the sidewall of the barrel of the acetylene generator 1, and the overflow pipe 101 is communicated with the inside of the acetylene generator 1.

In this embodiment, a first discharge port 301 is formed at the bottom of the first slurry buffer tank 3 for discharging the waste material.

In this embodiment, a second discharge port 401 is formed at the bottom of the second slurry buffer tank 4 for discharging the waste material.

In the embodiment, a slag discharging port 802 is formed in the bottom of the vacuum degassing tower 8, and the slag discharging port 802 is communicated with a slag slurry discharging tank.

In this embodiment, an oxygen on-line detector 16 is fixedly mounted on the acetylene manifold 15 before the quiet process.

The application method and the advantages of the utility model are as follows: when the acetylene recovery device is used, the working process is as follows:

as shown in fig. 1, 2 and 3, carbide slag slurry overflowed from an acetylene generator 1 overflows from an overflow pipe 101, enters a slag slurry buffer tank I3 and a slag slurry buffer tank II 4 through a closed heat-preserving pipeline respectively, is subjected to preliminary sedimentation and separation to remove massive impurity solids, then is respectively sent into a vacuum degassing tower 8 by a slag slurry pump I5 and a slag slurry pump II 6, the vacuum degassing tower 8 is provided with a vacuum pump to keep a certain vacuum, a large amount of water vapor is generated due to the fact that the carbide slag slurry has a certain temperature, mass transfer efficiency in the vacuum degassing tower 8 is high due to the unique design of the vacuum degassing tower 8 and the disturbance of the water vapor, and blockage is not easy to generate, part of unreacted carbide is also reacted to release acetylene due to the fact that the carbide slag slurry is efficiently dispersed, the other dissolved acetylene is continuously released from acetylene sludge, the gas from the vacuum degassing tower 8 is converged and then condensed by the first acetylene cooler 10 and the second acetylene cooler 11 to remove most of water vapor, the obtained acetylene gas from the sludge is sent to the vacuum pump 12, the acetylene gas from the sludge is pressurized by the vacuum pump 12 and sent to the third acetylene cooler 13 to further purify the acetylene gas by chilled water, the high-purity acetylene gas is filtered by the foam catcher 14, the high-purity acetylene gas enters the cleaning process to carry out the next operation through the acetylene main pipe 15 before the acetylene cleaning process, an oxygen on-line detector 16 is arranged on the acetylene pipeline to detect the oxygen content in the acetylene gas on line, when the oxygen content in the acetylene gas exceeds the standard (> 1%), the operation is stopped, the sludge discharged from the slag discharge port 802 at the bottom of the vacuum degassing tower 8 enters the sludge discharge tank, and overflows to a concentration tank for the next treatment.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an acetylene recovery unit in carbide slag thick liquid, includes acetylene generator, its characterized in that: the overflow pipe on the acetylene generator is communicated with the first slurry buffer tank and the second slurry buffer tank respectively through the first three-way pipe, the first slurry buffer tank is communicated with the first slurry buffer tank and the second slurry buffer tank are communicated with the feed inlets of the first slurry pump and the second slurry pump respectively, the first slurry pump is communicated with the discharge outlet of the second slurry pump through the second three-way pipe, the exhaust hole on the vacuum degassing tower is communicated with the air inlet end of the first acetylene cooler through an exhaust pipeline, the air outlet end of the first acetylene cooler is communicated with the air inlet end of the second acetylene cooler through a pipeline, the air outlet end of the second acetylene cooler is communicated with the air inlet end of the vacuum pump, and the air outlet end of the vacuum pump is communicated with the air inlet end of the foam catcher.

2. The acetylene recovery unit in a carbide slag slurry according to claim 1, wherein: the top of the acetylene generator is fixedly provided with a feed inlet which is communicated with the inside of the acetylene generator.

3. The acetylene recovery unit in a carbide slag slurry according to claim 1, wherein: the overflow pipe is positioned on the side wall of the barrel body of the acetylene generator and is communicated with the inside of the acetylene generator.

4. The acetylene recovery unit in a carbide slag slurry according to claim 1, wherein: and a first discharge port is formed in the bottom of the first slurry buffer tank and is used for discharging waste materials.

5. The acetylene recovery unit in a carbide slag slurry according to claim 1, wherein: and a second discharge port is formed in the bottom of the second slurry buffer tank and is used for discharging waste materials.

6. The acetylene recovery unit in a carbide slag slurry according to claim 1, wherein: the bottom of the vacuum degassing tower is provided with a slag discharge port which is communicated with a slag slurry discharge tank.

7. The acetylene recovery unit in a carbide slag slurry according to claim 1, wherein: and an oxygen on-line detector is fixedly arranged on the acetylene main pipe before the quiet working procedure.