CN217725519U - Continuous gas protection balancing unit - Google Patents

Abstract

The utility model discloses a continuous gas protection balancing unit, the inert gas inlet pipe way that is equipped with the dry pipe that admits air throws the intake pipe of material unit and reation kettle through the tube coupling of taking the stop valve respectively, throw the material unit and pass through material tube coupling reation kettle, the aftertreatment cauldron, purification cauldron, refined unit is through the material pipeline simultaneously, gas pipeline connects gradually, throw the material unit, reation kettle, the aftertreatment cauldron, the outlet duct of purification cauldron and the second outlet duct of refined unit are through the tube coupling gas balance pipe of taking the stop valve, the outlet duct of refined unit is through the tube coupling gas buffer tank of taking stop valve and dry tube, the connection condenser pipe of gas buffer tank, the condenser is through the tube coupling tail gas system of taking the stop valve, it is equipped with balanced stop valve and balanced dry tube to be close to gas buffer on the gas balance pipe, the utility model has the characteristics of intermittent reaction thoroughly, save protective gas, reduce VOC's emission, reduce the dangerous reaction.

Description

Continuous gas protection balancing unit

Technical Field

The utility model belongs to the technical field of chemical industry is forbidden to water, is forbidden to oxygen, isolated air serialization response equipment, especially, relate to a continuous gas protection balancing unit of the intermittent type production of meticulous chemical industry class.

Background

The production of fine chemistry industry (liquid crystal products) usually comprises a plurality of obstructed unit operation reactions, the operation belongs to the batch reaction type mostly, unit operation in the production usually needs to let in inert gas protective gas and maintains anhydrous, anaerobic and isolated air's reaction condition, used inert gas replacement and protection device of reation kettle in fine chemistry industry (liquid crystal products) at present can generally adopt independent gas protection system, the waste gas volume that often produces is big, leads to VOC to administer the degree of difficulty greatly. In addition, the materials are transferred in the production process, the materials are transferred to the next unit from the reaction kettle, the discharging device and the feeding device are unbalanced in gas protection in the material transfer process, the gas protection of the discharging kettle is possibly incomplete, the materials are affected, if flammable and explosive reaction materials are encountered, the more serious potential safety hazard is still existed, a large amount of waste gas is formed by the gas discharged from the feeding kettle, and the difficulty of VOC (volatile organic compound) treatment is large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to improve the not enough of prior art and provide a continuous gas protection balancing unit that nitrogen protection is more thorough, safe and reliable more, reaches anhydrous anaerobic and isolated air, balanced through balanced pipeline simultaneously, make gaseous reuse between the reation kettle, reduced waste gas and produced, make gas protection sufficient, reduce safe risk, improved the stability of product simultaneously.

The utility model aims at realizing like this, a continuous gas protection balancing unit, including throwing the material unit, reation kettle, the aftertreatment cauldron, purification cauldron, refined unit, the gas buffer tank, condenser and tail gas system, its characteristics are that the inert gas air inlet pipeline that is equipped with the drying tube that admits air throws the intake pipe of material unit and reation kettle through the tube coupling of taking the stop valve respectively, throw the material unit and pass through material tube coupling reation kettle, the aftertreatment cauldron, the purification cauldron, refined unit passes through the material pipeline simultaneously, the gas pipeline connects gradually, throw the material unit, reation kettle, the aftertreatment cauldron, the outlet duct of purification cauldron and the second outlet duct of refined unit connect the gas balance pipe through the tube coupling who takes the stop valve, the outlet duct of refined unit is through the tube coupling gas buffer tank who takes stop valve and drying tube, the intake pipe of condenser is connected to the outlet duct of gas buffer tank, the outlet duct of condenser is through the tube coupling tail gas system who takes the stop valve, it is equipped with balanced drying tube to be close to gas buffer tank end on the gas balance pipe.

Compared with the prior art, the utility model has the following characteristics of showing and positive effect: the utility model is characterized in that gas outlet pipes of a feeding unit, a reaction kettle, a post-treatment kettle, a purification kettle and a refining unit are connected in series through pipeline flanges, the gas outlet pipe is arranged at the top of a reaction device, and a check valve, a drying pipe and a stop valve are sequentially arranged on the gas outlet pipe of each reaction kettle; meanwhile, each reaction kettle is sequentially connected through a stainless steel balance pipeline pipe to achieve pressure balance among the reaction kettles; the pipeline is finally communicated with a gas buffer tank, and the protective gas enters a tail gas system for treatment after being condensed; meanwhile, the condensate can be recycled. When the material is transferred from the front section kettle to the rear section kettle, opening a stop valve on a pipeline of the corresponding reaction kettle to ensure that air pressure balance is formed between the two reaction kettles, opening a material transferring valve at the bottom of the reaction kettles, and realizing boring transfer through a pipeline pump; the material is in full-closed state in the material transferring process, so that the material transferring device is safer and reduces gas emission. The utility model discloses have the intermittent type reaction that makes chemical industry reaction process more thoroughly, safe and reliable more, reach anhydrous anaerobic and isolated air's reaction condition to make full use of protective gas through balanced pipe connection, reach and save protective gas, reduce VOC's emission, make the reaction system be in protective gas (inert gas) protection all the time simultaneously. The reaction danger is reduced, and the reaction impurities are reduced. The set of reaction equipment is safe and reliable, achieves the production conditions of no water, no oxygen and air isolation, and can be popularized and used for the chemical production of the intermittent reaction of fine chemical engineering (liquid crystal products).

Drawings

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

In the figure: 1. a feeding unit, 2, a reaction kettle, 3, a post-treatment kettle, 4, a purification kettle, 5, a refining unit, 6, a gas buffer tank, 7, a condenser, 8, a tail gas system, 9, a material pipeline, 10, a gas pipeline, 11, a gas balance pipe, 12 and an air inlet drying pipe, 13, a seventh stop valve, 14, an eighth stop valve, 15, a first stop valve, 16, a second stop valve, 17, a third stop valve, 18, a fourth stop valve, 19, a fifth stop valve, 20, a balance stop valve, 21, and a balance drying pipe.

Detailed Description

A continuous gas protection balancing device, refer to FIG. 1, comprising a feeding unit 1, a reaction kettle 2, a post-treatment kettle 3, a purification kettle 4, a refining unit 5, a gas buffer tank 6, a condenser 7 and a tail gas system 8, wherein an inert gas inlet pipe connected with an external gas source is provided with an inlet gas drying pipe 12, the inert gas inlet pipe is respectively connected with an inlet pipe of the feeding unit 1 and an inlet pipe of the reaction kettle 2 through a pipeline with a seventh stop valve 13, the feeding unit 1 is connected with the reaction kettle 2 through a material pipeline 9, the reaction kettle 2, the post-treatment kettle 3, the purification kettle 4 and the refining unit 5 are sequentially connected and communicated through the material pipeline 9, and simultaneously the reaction kettle 2, the post-treatment kettle 3, the purification kettle 4, the refining unit 5 and the gas buffer tank 6 are sequentially connected and communicated through a gas pipeline 10 with a check valve and a drying pipe, the gas outlet pipe of the feeding unit 1 is provided with a first stop valve 15, the gas outlet pipe of the reaction kettle 2 is provided with a second stop valve 16, the gas outlet pipe of the post-treatment kettle 3 is provided with a third stop valve 17, the gas outlet pipe of the purification kettle 4 is provided with a fourth stop valve 18, the second gas outlet pipe of the refining unit 5 is provided with a fifth stop valve 19, the gas outlet pipe of the reaction kettle 2, the gas outlet pipe of the post-treatment kettle 3, the gas outlet pipe of the purification kettle 4 and the second gas outlet pipe of the refining unit 5 are simultaneously connected and communicated with the gas balance pipe 11 to form a parallel connection relation, the joints of the gas pipeline 10, the reaction kettle 2, the post-treatment kettle 3, the purification kettle 4 and the refining unit 5 are respectively positioned on the gas outlet pipes between the stop valves and the gas outlets of the corresponding kettles, the gas outlet pipe of the gas buffer tank 6 is connected with the gas inlet pipe of the condenser 7, the gas outlet pipe of the condenser 7 is connected with the tail gas system 8 through the pipeline with the stop valves, the end of the gas balance pipe 11 close to the gas buffer tank 6 is provided with a balance stop valve 20 and a balance drying pipe 21, the discharge port of the refining unit 5 is connected with an external finished product tank through a pipeline.

The working process of the utility model is as follows:

1. air intake: the external inert gas is respectively conveyed into the feeding unit 1 and the reaction kettle 2 through an air inlet pipe with an air inlet drying pipe 12, the inert gas entering the reaction kettle 2 enters the post-treatment kettle 3 through an air outlet pipe and a pipeline with a check valve and a drying pipe, the inert gas enters the purification kettle 4 through an air outlet pipe with the post-treatment kettle 3 and a pipeline with the check valve and the drying pipe, the inert gas enters the refining unit 5 through an air outlet pipe with the purification kettle 4 and a pipeline with the check valve and the drying pipe, the inert gas enters the gas buffer tank 6 through an air outlet pipe with the refining unit 5 and a pipeline with the check valve and the drying pipe, and finally the inert gas is condensed 7 through a condenser through the buffer tank 6 and is discharged into the tail gas system 8 through a stop valve.

2. Material transfer and gas balance: the gas outlets of the feeding unit 1, the reaction kettle 2, the post-treatment kettle 3, the purification kettle 4 and the refining unit 5 are respectively provided with a first stop valve 15, a second stop valve 16, a third stop valve 17, a fourth stop valve 18 and a fifth stop valve 19, and then communicated with the gas balance pipe 11 to form a gas balance pipeline for material transfer operation.

When the materials are transferred into the reaction kettles 2 from the feeding unit 1 through the material pipeline 9, the first stop valve 15 and the second stop valve 16 are opened to enable air pressure balance to be formed between the two reaction kettles, the material transfer valve at the bottom of the feeding unit is opened, the materials are transferred from the feeding unit 1 to the reaction kettles 2 through the pipeline pump, and after the transfer is finished, the first stop valve 15 and the second stop valve 16 are closed; when the materials are transferred from the reaction kettle 2 to the post-treatment kettle 3, the second stop valve 16 and the third stop valve 17 are opened to enable the air pressure between the two reaction kettles to be balanced, the material transfer valve at the bottom of the reaction kettle 2 is opened, the materials are transferred from the reaction kettle 2 to the post-treatment kettle 3 through the pipeline pump, and after the transfer is finished, the second stop valve 16 and the third stop valve 17 are closed; when the materials are transferred from the post-treatment kettle 3 to the purification kettle 4, opening a third stop valve 17 and a fourth stop valve 18 to balance the air pressure between the two reaction kettles, opening a material transfer valve at the bottom of the post-treatment kettle 3, transferring the materials from the post-treatment kettle 3 to the purification kettle 4 through a pipeline pump, and closing the third stop valve 17 and the fourth stop valve 18 after the transfer is finished; when the material is transferred from the purification kettle 4 to the refining unit 5, the fourth stop valve 18 and the fifth stop valve 19 are opened to enable the air pressure between the two reaction kettles to be balanced, the material transfer valve at the bottom of the purification kettle 4 is opened, the material is transferred from the purification kettle 4 to the refining unit 5 through the pipeline pump, and after the transfer is finished, the fourth stop valve 18 and the fifth stop valve 19 are closed; when the material is put in storage by the ejection of compact of refining unit 5, open fifth stop valve 19 and balanced stop valve 20, make to form atmospheric pressure between refining unit 5 and the gas buffer tank 6 and balance, open the baiting valve of refining unit 5 bottom again, pack and finish, close fifth stop valve 19 and balanced stop valve 20, the zero release of gaseous in this device can effectually realize the material transfer process.

Claims (1)

1. The utility model provides a continuous gas protects balancing unit, including throwing the material unit, reation kettle, the aftertreatment cauldron, purification cauldron, refined unit, gaseous buffer tank, condenser and tail gas system, characterized by is equipped with the inert gas inlet line of the dry pipe that admits air and throws the intake pipe of material unit and reation kettle through the tube coupling of taking the stop valve respectively, throw the material unit and pass through material tube coupling reation kettle, the aftertreatment cauldron, refined unit is simultaneously through the material pipeline, the gas pipeline connects gradually, throw the material unit, reation kettle, the aftertreatment cauldron, the outlet duct of purification cauldron and the second outlet duct of refined unit pass through the tube coupling gas balance pipe of taking the stop valve, the outlet duct of refined unit passes through the tube coupling gas buffer tank of taking stop valve and dry pipe, the inlet duct of condenser is connected to the outlet duct of gas buffer tank, the outlet duct of condenser passes through the tube coupling tail gas system of taking the stop valve, be close to gas buffer tank end and be equipped with balanced dry pipe on the gas balance pipe.

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