CN-224207424-U - High-efficiency fractionating tray for ethyl chloroacetate rectification

CN224207424UCN 224207424 UCN224207424 UCN 224207424UCN-224207424-U

Abstract

The utility model relates to the technical field of fractionation trays, in particular to an ethyl chloroacetate rectification efficient fractionation tray, which comprises an upper tower barrel which is fixedly arranged, wherein a liquid inlet pipe is arranged on the left outer side wall of the lower part of the upper tower barrel, the tail end of the liquid inlet pipe is horizontally rightwards and fixedly connected to the outer side wall of the upper tower barrel in a sealing manner, the inside of the liquid inlet pipe is communicated with the upper cavity of the upper tower barrel through a liquid inlet, the lower outer side wall of the upper tower barrel is sealed and movably sleeved on the upper outer side wall of a lower tower barrel, a coaxial fluted disc is integrally formed and fixed on the upper outer side wall of the lower tower barrel, and a gas-liquid mixing assembly is arranged in the lower cavity of the lower tower barrel. According to the utility model, through the structure design that the upper tower barrel and the lower tower barrel are sleeved and the lower tower barrel can rotate circumferentially, and the arrangement of the vertical scraping plate, the vertical scraping plate can complete scraping of the liquid inlet along with the rotation of the lower tower barrel, so that the accumulation and blockage of materials near the liquid inlet are avoided, the smooth liquid entering into the upper tower barrel is ensured, and the stability and the continuity of the fractionation process are maintained.

Inventors

MENG YITONG
Meng Chunguo
WANG HAO
HUANG DINGQIAN
DAI WENZHENG

Assignees

济宁福顺化工有限公司

Dates

Publication Date: 20260508
Application Date: 20250530

Claims (9)

1. The ethyl chloroacetate rectification high-efficiency fractionating tower tray is characterized by comprising an upper tower drum which is fixedly arranged, wherein a liquid inlet pipe is arranged on the left outer side wall of the lower part of the upper tower drum, the top of the liquid inlet pipe is connected with a liquid outlet of the upper fractionating tower tray, the tail end of the liquid inlet pipe is horizontally rightwards and fixedly connected to the outer side wall of the upper tower drum in a sealing manner, the inside of the liquid inlet pipe is communicated with the upper cavity of the upper tower drum through a liquid inlet, the outer side wall of the lower part of the upper tower drum is sealed and movably sleeved on the outer side wall of the upper part of the lower tower drum, a coaxial fluted disc is integrally formed and fixedly arranged on the outer side wall of the upper part of the lower tower drum, the top of the coaxial fluted disc is abutted to the bottom of the upper tower drum, the lower tower drum is fixedly arranged in the vertical direction and freely rotates in the circumferential direction, and a gas-liquid mixing assembly is arranged in the lower cavity of the lower tower drum.
2. The ethyl chloroacetate rectification high-efficiency fractionation tray according to claim 1, wherein the gas-liquid mixing assembly comprises a built-in tray fixedly installed at a top opening part of the lower tower drum, wherein a top part of the built-in tray is lower than a bottom part of the liquid inlet, an overflow baffle plate is fixed at a right side of the top part of the built-in tray, the overflow baffle plate is used for blocking liquid entering a left side of the built-in tray and overflowing to the right side when the overflow baffle plate is also higher than the top part of the built-in tray, a plurality of one-way air valves are installed on a surface of the built-in tray at the left side of the overflow baffle plate, each one-way air valve is used for bubbling high-pressure air flowing upwards in a lower cavity to an upper cavity, and a liquid one-way valve is installed on a surface of the built-in tray at the right side of the overflow baffle plate and is used for flowing liquid accumulated above the liquid downwards into the lower cavity and continuing to flow to the lower layer fractionation tray.
3. The ethyl chloroacetate rectification high-efficiency fractionation tray of claim 2, wherein a plurality of vertical scrapers are uniformly fixed on the top of the lower tower at intervals along the circumference of the top of the lower tower, the outer side walls of the vertical scrapers are abutted against the inner side walls of the upper cavity, and the scraping of the liquid inlet is completed when each vertical scraper rotates along with the fixed shaft of the lower tower.
4. The ethyl chloroacetate rectification high-efficiency fractionation tray of claim 3, wherein the top of each vertical scraper is fixed at the bottom of an upper circular ring, and the outer side wall of the upper circular ring is matched and abutted with the inner wall of the upper cavity.
5. The ethyl chloroacetate rectification high-efficiency fractionation tray of claim 4, wherein a sinking bent pipe part is arranged at the bottom of the liquid inlet pipe.
6. The ethyl chloroacetate rectification high-efficiency fractionation tray of claim 5, wherein the fixed shaft of the upper tower is arranged and is rotated by external equipment driving action or manual rotation action.
7. The ethyl chloroacetate rectification high-efficiency fractionation tray of claim 6, wherein the bottom surface of the upper tower cylinder, the top surface of the coaxial fluted disc and the bottom surface are smooth planes formed by polishing and grinding.
8. The ethyl chloroacetate rectification high-efficiency fractionation tray of claim 7, wherein a wear-resistant sealing ring is sleeved on the outer side wall of the upper part of the lower tower barrel, and the wear-resistant sealing ring is used for realizing sealing and movable abutting of the outer side wall of the lower tower barrel and the inner side wall of the upper tower barrel.
9. The ethyl chloroacetate rectification high-efficiency fractionation tray of claim 8, wherein the space on the left side of said overflow baffle is used as a mixing zone for low temperature liquid and high temperature gas.

Description

High-efficiency fractionating tray for ethyl chloroacetate rectification Technical Field The utility model relates to the technical field of fractionation trays, in particular to an efficient fractionation tray for ethyl chloroacetate rectification. Background In the production process of ethyl chloroacetate, rectification is a key link for realizing product purification and separation, and a fractionating tray is used as a core internal part of rectification equipment, so that the performance quality of the fractionating tray plays a decisive role in the rectification effect. The traditional fractionating tower tray usually adopts a simple baffle or a guide plate as an auxiliary structure, and in addition, the auxiliary structure (such as the baffle) of the traditional tower tray is mainly fixedly installed, and the tower tray is required to be integrally disassembled during maintenance, so that the maintenance is complicated. Some new and improved structures are also proposed in the prior art, and a fractionating tower tray disclosed in patent document CN202320107478.9 is searched, and the main structure of the fractionating tower tray comprises main components such as a device body, a main body mechanism, a tray shell, a deflector, a discharge pipe, a spray nozzle, a pipeline mechanism, a mounting block, an exhaust hole, a blanking hole and the like. As can be seen from the description of the application, the prior patent has the following problems when used for ethyl chloroacetate rectification and fractionation: The upper part of the existing fractionating tower tray adopting a pipeline mechanism is provided with an exhaust hole, the lower part is provided with a diversion hole, the structure is easy to realize incomplete gas-liquid separation, gas is easy to carry liquid drops into the exhaust hole, and finally, liquid phase materials are continuously mixed in the gas phase, so that cross contamination is easy to cause and the separation purity is influenced. Because ethyl chloroacetate has higher viscosity, liquid at the position of the diversion hole is easy to adhere to the edge of the orifice when flowing through, and particularly when materials contain polymers or impurities, the materials are easy to accumulate to form a blockage, and the inside of the pipeline mechanism is inconvenient to clean. Based on the structure, the utility model designs a small tray structure special for efficient fractionation of ethyl chloroacetate rectification so as to realize efficient separation of enterprises and facilitate cleaning, and the small tray structure is used for better solving the problems in the prior art. Disclosure of utility model The ethyl chloroacetate rectification efficient fractionating tower tray comprises an upper tower barrel which is fixedly arranged, wherein a liquid inlet pipe is arranged on the left outer side wall of the lower part of the upper tower barrel, the top of the liquid inlet pipe is connected with a liquid outlet of the upper fractionating tower tray, the tail end of the liquid inlet pipe is horizontally and rightwards and is fixedly connected to the outer side wall of the upper tower barrel in a sealing manner, the inside of the liquid inlet pipe is communicated with the upper cavity of the upper tower barrel through the liquid inlet, the lower outer side wall of the upper tower barrel is sealed and movably sleeved on the upper outer side wall of a lower tower barrel, a coaxial fluted disc is integrally formed and fixed on the upper outer side wall of the lower tower barrel, the top of the coaxial fluted disc is abutted to the bottom of the upper tower barrel, the lower tower barrel is fixedly arranged in the vertical direction and freely rotates in the circumferential direction, and a gas-liquid mixing assembly is arranged in the lower cavity of the lower tower barrel. On the basis of any technical scheme, the gas-liquid mixing assembly is further optimized to comprise a built-in tray fixedly arranged at the top opening part of the lower tower barrel, the top of the built-in tray is lower than the bottom of the liquid inlet, an overflow baffle is fixed on the right side of the top of the built-in tray and used for blocking liquid entering the left side of the built-in tray and overflowing to the right side when the liquid is also higher than the top of the built-in tray, a plurality of one-way air valves are arranged on the surface of the built-in tray on the left side of the overflow baffle and used for bubbling high-pressure gas flowing upwards in a lower cavity to an upper cavity, a liquid one-way valve is arranged on the surface of the built-in tray on the right side of the overflow baffle and used for downwards flowing the liquid accumulated above the overflow baffle into the lower cavity and continuing to flow to a lower-layer fractionation tray. On the basis of any technical scheme, it is further optimized that a plurality of vertical scrapers are uniformly fixed o