CN210977805U

CN210977805U - Liquid shock-absorbing structure is removed to vinylidene fluoride preparation workshop section compressor exit

Info

Publication number: CN210977805U
Application number: CN201922207172.7U
Authority: CN
Inventors: 郑秀斌; 徐德华
Original assignee: Shandong Deyi New Materials Co ltd
Current assignee: Shandong Deyi New Materials Co ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-07-10
Anticipated expiration: 2029-12-10

Abstract

The utility model provides a vinylidene fluoride preparation workshop section compressor is imported and exported and is removed liquid shock-absorbing structure, which comprises a compressor, the compressor import is passed through the pipe connection ordinary pressure gas storehouse, the compressor export is passed through the pipe connection one-level buffer tank, and the one-level buffer tank passes through the thick distillation tower of pipe connection, be equipped with valve I on the pipeline of compressor import department, be equipped with valve II on the pipeline of compressor export, it has concatenated buffer tank I on the pipeline between valve I and the compressor import, it has concatenated buffer tank II to lie in on the compressor export pipeline between valve II and the safe pressure relief pipe tie point. The technical scheme of the utility model can advance the separation of gas-water at VDF gaseous entering compressor to with liquid recovery, caused the damage to it after having avoided liquid to get into the compressor, simultaneously, set up the pressure that buffer tank II can buffer compressor export gas in the compressor export, make the pressure in the pipeline steady, reduce compressor outlet pipeline's vibrations and noise.

Description

Liquid shock-absorbing structure is removed to vinylidene fluoride preparation workshop section compressor exit

Technical Field

The utility model relates to a polyvinylidene fluoride production facility field, concretely relates to vinylidene fluoride preparation workshop section compressor is imported and exported and is removed liquid shock-absorbing structure.

Background

Polyvinylidene fluoride (PVDF) applications have focused primarily on the three major areas of petrochemical, electronics, electrical and fluorocarbon coatings, and is one of the best materials for pumps, valves, piping, plumbing fittings, storage tanks and heat exchangers in petrochemical plant fluid handling systems as a whole or as liners due to the good chemical resistance, processability, and fatigue and creep resistance of PVDF. When polyvinylidene fluoride is industrially produced, vinylidene fluoride (VDF) is first produced and then polymerized to produce polyvinylidene fluoride.

In the process of preparing the vinylidene fluoride, the raw materials are cracked to generate gas, the gas is treated by the steps of filtering, washing with water, alkali washing and the like, and then enters a normal-pressure gas reservoir, and VDF gas in the normal-pressure gas reservoir enters a VDF storage tank after being pressurized in three stages. Since the VDF gas in the atmospheric pressure gas storage is involved in the previous step with water, water vapor or small liquid droplets are mixed therein. During the pressurization of the compressor, the small liquid drops may enter the compressor after being collected in the pipeline, and the water cannot be compressed, so that the compressor may be damaged. In addition, the exhaust port of the compressor has high pressure, so that the pipeline system vibrates during exhaust, and the pipeline and equipment are adversely affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming above-mentioned prior art not enough, provide vinylidene fluoride preparation workshop section compressor exit and remove liquid shock-absorbing structure, can detach the liquid of mixing in vinylidene fluoride gas, prevent that the compressor is impaired, reduce the vibrations of compressor export simultaneously.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a damping structure for removing liquid at an inlet and an outlet of a compressor in a vinylidene fluoride preparation working section comprises the compressor, wherein the inlet of the compressor is connected with a normal-pressure gas reservoir through a pipeline, the outlet of the compressor is connected with a first-stage buffer tank through a pipeline, the first-stage buffer tank is connected with a crude distillation tower through a pipeline, a valve I is arranged on the pipeline at the inlet of the compressor, a valve II is arranged on the pipeline at the outlet of the compressor, a safety pressure relief pipe is connected between the valve II and the outlet of the compressor, a safety valve is arranged on the safety pressure relief pipe, the buffer tank I is connected in series on the pipeline between the valve I and the inlet of the compressor, and a buffer tank II is; buffer tank I is equipped with low-order air inlet and high-order gas vent, and the compressor import communicates the gas vent of buffer tank I, I intercommunication buffer tank I air inlet of valve.

Further, buffer tank II is equipped with low-order air inlet and high-order gas vent, and the compressor export communicates buffer tank II's air inlet, and II gas vents of buffer tank of valve intercommunication.

Further, the safety pressure relief pipe is communicated with the atmosphere.

Furthermore, buffer tank I and II bottoms of buffer tank all are equipped with the scum pipe, and the scum pipe is equipped with the sediment valve, and a collecting vessel is connected to two scum pipes.

Before the gas that comes from ordinary pressure gas storehouse got into the compressor, earlier through buffer tank I, gas from down and up, liquid then falls into I bottom of buffer tank, can effective mode liquid entering compressor, and the sediment valve is opened to liquid collection after a certain amount, emits liquid to collect through the collection tank and handle. When the VDF gas is discharged after being pressurized by the compressor, the VDF gas firstly enters the buffer tank II to buffer the gas pressure and then enters the pipeline, so that the gas conveying pressure is stable, the vibration of the pipeline is reduced, and meanwhile, the gas-water separation can be further carried out.

The utility model has the advantages that: the technical scheme of the utility model can advance the separation of gas-water at gaseous entering compressor to with liquid recovery, caused the damage to it after having avoided liquid to get into the compressor, simultaneously, set up the pressure that buffer tank II can buffer compressor export gas in the compressor export, make the pressure in the pipeline steady, reduce the vibrations and the noise of compressor export pipeline.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of the present invention.

Shown in the figure: 1. compressor, 2, atmospheric pressure gas storage, 3, one-level buffer tank, 4, thick distillation tower, 5, valve I, 6, valve II, 7, safe pressure release pipe, 8, relief valve, 9, buffer tank I, 10, buffer tank II, 11, scum pipe, 12, sediment valve, 13, collection tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

An import and export of vinylidene fluoride preparation workshop section compressor removes liquid shock-absorbing structure as shown in fig. 1, including compressor 1, 1 import of compressor passes through pipe connection ordinary pressure gas reservoir 2, 1 export of compressor passes through pipe connection one-level buffer tank 3, one-level buffer tank 3 passes through thick distillation tower 4 of pipe connection, be equipped with valve I5 on the pipeline of 1 import department of compressor, be equipped with valve II 6 on the pipeline of 1 export of compressor, in order to guarantee pipeline safety, prevent that pressure from leading to the fact the explosion excessively, be connected with safe pressure release pipe 7 between II 6 of valve and the 1 export of compressor, safe pressure release pipe 7 intercommunication atmosphere, be equipped with relief valve 8 on the safe pressure release pipe 7, be equipped with pressure sensor on the relief valve 8.

A buffer tank I9 is connected in series on a pipeline between the valve I5 and the inlet of the compressor 1, and a buffer tank II 10 is connected in series on an outlet pipeline of the compressor 1 between a connection point of the valve II 6 and the safety pressure relief pipe 7; buffer tank I9 is equipped with low-order air inlet and high-order gas vent, and the compressor import communicates buffer tank I9's gas vent, valve I5 intercommunication buffer tank I9 air inlet.

Buffer tank II 10 is equipped with low-order air inlet and high-order gas vent, and the air inlet of compressor 1 export intercommunication buffer tank II 10, and valve II 6 communicates the gas vent of buffer tank II 10.

The bottoms of the buffer tank I9 and the buffer tank II 10 are respectively provided with a slag discharge pipe 11, the slag discharge pipe 11 is provided with a slag discharge valve 12, and the two slag discharge pipes 11 are connected with a collecting tank 13.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Vinylidene fluoride preparation workshop section compressor is imported and exported and is removed liquid shock-absorbing structure, including the compressor, the compressor import passes through pipe connection ordinary pressure gas storehouse, the compressor export passes through pipe connection one-level buffer tank, and the one-level buffer tank passes through the thick distillation tower of pipe connection, be equipped with valve I on the pipeline of compressor import department, be equipped with valve II on the pipeline of compressor export, be connected with safe pressure release pipe between valve II and the compressor export, be equipped with relief valve, its characterized in that on the safe pressure release pipe: a buffer tank I is connected in series on a pipeline between the valve I and the inlet of the compressor, and a buffer tank II is connected in series on an outlet pipeline of the compressor between the valve II and a connecting point of the safety pressure relief pipe; buffer tank I is equipped with low-order air inlet and high-order gas vent, and the compressor import communicates the gas vent of buffer tank I, I intercommunication buffer tank I air inlet of valve.

2. The vinylidene fluoride preparation workshop section compressor inlet and outlet liquid removal damping structure according to claim 1, characterized in that: buffer tank II is equipped with low-order air inlet and high-order gas vent, and the compressor export communicates the air inlet of buffer tank II, and II gas vents of valve intercommunication buffer tank II.

3. The vinylidene fluoride preparation workshop section compressor inlet and outlet liquid removal damping structure according to claim 1, characterized in that: the safety pressure relief pipe is communicated with the atmosphere.

4. The vinylidene fluoride preparation workshop section compressor inlet and outlet liquid removal damping structure according to claim 1, characterized in that: buffer tank I all is equipped with the scum pipe with II bottoms of buffer tank, and the scum pipe is equipped with the scum valve, and a collecting vessel is connected to two scum pipes.