CN219064191U

CN219064191U - Even controlling means of polymerizer circulating water heat removal

Info

Publication number: CN219064191U
Application number: CN202223232933.2U
Authority: CN
Inventors: 景云天; 冯拥军; 裴英鸽; 吴元民; 刘元戎; 刘希顺; 张文学; 饶栋; 张宇琪; 田德鹏; 王长生
Original assignee: Jinchuan Group Co Ltd
Current assignee: Jinchuan Group Co Ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-05-23
Anticipated expiration: 2032-12-05

Abstract

The utility model discloses a heat transfer and uniform control device for circulating water of a polymerization kettle, which comprises an inner cooling pipe of the polymerization kettle and a polymerization kettle jacket arranged outside the polymerization kettle, wherein the inner cooling pipe of the polymerization kettle is provided with an inner cooling pipe circulating water inlet and an inner cooling pipe circulating water outlet, the polymerization kettle jacket is provided with a jacket circulating water inlet and a jacket circulating water outlet, the top of the polymerization kettle is provided with a condenser, and the condenser is provided with a condenser circulating water inlet and a condenser circulating water outlet. The device is used in the polymerization reaction temperature control field, and the circulating water pipeline of the jacket of the polymerization kettle and the circulating water pipeline of the internal cooling pipe are independently supplied, so that the circulating water flow and the pressure of the jacket and the circulating water pipeline of the internal cooling pipe are sufficient, the influence of the circulating water flow and the pressure of the circulating water pipeline of the jacket and the internal cooling pipe is avoided, the polymerization kettle is timely heat-removed, and meanwhile, when the high temperature and high pressure condition occurs in the polymerization kettle, the heat-removal and the temperature reduction of the polymerization kettle can be carried out in a short time, the temperature and the conversion rate of slurry in the kettle are kept to reach the standards, and the product quality is effectively ensured.

Description

Even controlling means of polymerizer circulating water heat removal

Technical Field

The utility model relates to a temperature control device in the polymerization reaction process, in particular to a device for uniformly and stably controlling the temperature of a polymerization kettle, which is used for removing a large amount of heat by water circulation through a cold pipe and a jacket in the polymerization kettle and preventing the local temperature of the polymerization kettle from overheating.

Background

In the production process of polyvinyl chloride resin, vinyl chloride is generated through polymerization reaction under certain conditions, and the reaction needs to keep higher reaction temperature and reaction pressure, so that the temperature control is more accurate, and the reaction control is more stable. The temperature control of the polymerization kettle is inaccurate, and the safety risk is high. The circulating water system is a water supply device which takes water as a cooling medium and circularly operates, and the temperature of the traditional polymerization kettle is generally controlled by combining the heat removal of circulating cooling water and internal stirring. The jacket and the internal cooling pipe share one set of circulating water pipeline, so that the water pressure is lower, the flow is smaller, the flow control is not accurate enough, the reaction heat removal is not timely, the cooling effect of the polymerization kettle is poor, the single kettle capacity is affected, the high temperature and the high pressure are easy to realize in the later reaction period, and the product quality is improved disadvantageously.

Disclosure of Invention

In order to solve the problems, the utility model provides a heat transfer and uniform control device for circulating water of a polymerization kettle, which separates a jacket circulating water pipeline from an internal cooling pipe circulating water pipeline in the polymerization kettle, adopts a separate pipeline to supply circulating water, and ensures that the flow and the pressure of the jacket and the internal cooling pipe are sufficient, and the flow and the pressure of the jacket and the internal cooling pipe are not influenced by each other, so that the heat removal and the temperature of the polymerization kettle are accurately controlled in time, the temperature of the circulating water is uniformly and accurately controlled, the safety of polymerization reaction is ensured, and the product quality is improved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a polymerization cauldron circulating water moves even controlling means of heat, includes the polymerization cauldron internal cooling pipe that sets up in the polymerization cauldron inside and sets up the polymerization cauldron jacket outside the polymerization cauldron, be equipped with internal cooling pipe circulating water import and internal cooling pipe circulating water export on the polymerization cauldron internal cooling pipe, be equipped with jacket circulating water import and jacket circulating water export on the polymerization cauldron jacket, the polymerization cauldron roof is equipped with the condenser, be equipped with condenser circulating water import and condenser circulating water export on the condenser, be equipped with agitating unit in the polymerization cauldron.

The utility model has the beneficial effects that: (1) The jacket and the internal cooling pipe circulating water are independently supplied, so that the heat removal effect of the jacket and the circulating water is improved; (2) After the circulating water is independently supplied, the flow and the pressure of the jacket and the pipeline of the internal cooling pipe are sufficient, and the two are not influenced; (3) No blockage is generated on the sealing head and the jacket of the kettle body, and the heat transfer coefficient is improved; (4) When the high temperature and high pressure condition appears in the polymerization kettle, the heat and the temperature of the polymerization kettle can be removed in a short time, the temperature and the conversion rate of the slurry in the kettle are kept to reach the standards, and the product quality is effectively ensured.

Drawings

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

in the figure, the reactor comprises a 1-polymerizer, a 2-polymerizer inner cooling pipe, a 3-polymerizer jacket, a 4-condenser, a 5-inner cooling pipe circulating water inlet, a 6-inner cooling pipe circulating water outlet, a 7-jacket circulating water inlet, an 8-jacket circulating water outlet, a 9-condenser circulating water inlet, a 10-condenser circulating water outlet and an 11-stirring device.

Detailed Description

The present utility model will be described in further detail with reference to specific examples and drawings, but the embodiments of the present utility model are not limited thereto.

As shown in fig. 1, the heat transfer and uniform control device for the circulating water of the polyvinyl chloride polymerization kettle comprises an inner cooling pipe 2 arranged in the polymerization kettle 1 and a polymerization kettle jacket 3 arranged outside the polymerization kettle 1, wherein the inner cooling pipe 2 is provided with an inner cooling pipe circulating water inlet 5 and an inner cooling pipe circulating water outlet 6, the polymerization kettle jacket is provided with a jacket circulating water inlet 7 and a jacket circulating water outlet 8, the top of the polymerization kettle 1 is provided with a condenser 4, the condenser 4 is provided with a condenser circulating water inlet 9 and a condenser circulating water outlet 10, and the polymerization kettle 1 is internally provided with a stirring device 11.

When the circulating water pump is used, circulating water is conveyed to a water supply main pipe by a water pump, cooling water in the water supply main pipe enters through a condenser circulating water inlet 9, after the gas-phase chloroethylene at the top of the kettle is cooled, the circulating water flows out from a condenser circulating water outlet 10, and heat is removed from the condenser; the circulating water of the internal cooling pipe of the polymerization kettle enters from the circulating water inlet 5 of the internal cooling pipe, cools the inside of the polymerization kettle, keeps the reaction temperature in the operation process of the polymerization kettle, and flows out from the circulating water outlet 6 of the internal cooling pipe after being cooled, so as to remove heat from the internal cooling pipe; the circulating water of the jacket of the polymerization kettle enters from the circulating water inlet 7 of the jacket, after the circulating heat removal is carried out on the outer shell of the polymerization kettle, the circulating water flows out from the circulating water outlet 8 of the jacket, the heat removal is carried out on the outer jacket of the polymerization kettle, and then the circulating water removes the heat of the polymerization kettle and is collected into the water return main pipe.

The utility model controls the temperature of each part by one-to-one adjustment of three paths of circulating water flow, the temperature control meets the range of +/-0.2 ℃ and the temperature fluctuation is smaller. The utility model makes the jacket and the inner cooling pipe remove heat independently and separate the circulating water pipeline, so that the single kettle productivity is improved and the product quality is improved.

Claims

1. The utility model provides a even controlling means of polymerizer circulating water heat removal which characterized in that: the polymerization kettle comprises a polymerization kettle inner cooling pipe arranged inside the polymerization kettle and a polymerization kettle jacket arranged outside the polymerization kettle, wherein an inner cooling pipe circulating water inlet and an inner cooling pipe circulating water outlet are arranged on the polymerization kettle inner cooling pipe, a jacket circulating water inlet and a jacket circulating water outlet are arranged on the polymerization kettle jacket, a condenser is arranged on the top of the polymerization kettle, and a condenser circulating water inlet and a condenser circulating water outlet are arranged on the condenser.

2. The polymerization kettle circulating water heat transfer even control device according to claim 1, wherein: and a stirring device is arranged in the polymerization kettle.