CN-224207460-U - Device for improving qualified speed of water value of butadiene device product

Abstract

The utility model provides a device for improving the qualified speed of the water value of a butadiene device, which is characterized in that a pipeline is arranged between the outlet of a reflux pump of a heavy removal tower and a reflux tank of a light removal tower, the heavy removal tower reflux pump is utilized to directly convey industrial butadiene with unqualified water value in the initial stage of driving into the reflux tank of the light removal tower, and a water separating funnel of the reflux tank of the light removal tower is utilized to separate water carried in the industrial butadiene, so that the qualified speed of the product is greatly improved, the energy consumption and the material consumption can be reduced when the qualified product is accelerated, the upstream and downstream load improving speed can be improved when the product obtains profit in advance, and better economic benefit is obtained.

Inventors

• CHEN XIAOLEI
• ZHANG WUJUAN
• CAO ZHIJIA
• DING DI
• ZHANG SHENGLI
• LIU YONGLIAN
• JIANG CUI
• LI HE

Assignees

• 北方华锦化学工业股份有限公司

Dates

Publication Date

20260508

Application Date

20250511

Claims (3)

1. 1. A device for improving the qualified speed of the water value of a butadiene device product is characterized in that a new pipeline is connected between an outlet of a heavy-removal tower reflux pump and a light-removal tower reflux tank, a new first valve is arranged at the joint of the new pipeline and the light-removal tower reflux tank, and a new second valve is arranged at the joint of the new pipeline and the outlet of the heavy-removal tower reflux pump.
2. 2. The apparatus for increasing the acceptable rate of water value in butadiene plant product as recited in claim 1, wherein a new first pilot shower and a new flare discharge line valve are provided before the first valve.
3. 3. The device for improving the qualified speed of the water value of the butadiene device product according to claim 2, wherein a new second guide shower is arranged behind the second valve, nitrogen is introduced into the new second guide shower, the second guide shower is used as a nitrogen purging inlet, and the new torch discharge line valve is used for purging residual industrial butadiene into a torch system.

Description

Device for improving qualified speed of water value of butadiene device product Technical Field The utility model belongs to the technical field of butadiene production, and particularly relates to a device for improving the qualified speed of water values of industrial butadiene products at the initial start-up stage of a butadiene device. Background The butadiene device adopts an acetonitrile method to prepare butadiene, dehydration measures are adopted when qualified product industrial butadiene is prepared, so that the water value content in industrial butadiene products is less than or equal to 20ppm so as to meet the product delivery quality requirement, and it is very important how to enable the water value of the products to meet delivery indexes as soon as possible at the initial stage of starting the production device. The butadiene light component removing tower is used for removing methyl acetylene and water entrained in industrial butadiene products, the two components flow out of the tower top as light components, and the pressure of the tower top fluctuates along with the content of the methyl acetylene and the temperature change of cooling water. Because methylacetylene causes self-decomposition explosion under certain conditions, the concentration of the methylacetylene must be less than 45%, and therefore, a part of butadiene must be lost to maintain the limit, a reflux tank is arranged at the top of the tower, the reflux tank is provided with a water diversion funnel, methylacetylene gas is discharged into a torch or a methylacetylene gas recovery device at the top of the tank, and water collected by the water diversion funnel is discharged into a solvent recovery system. The butadiene heavy removal tower has the function of separating industrial butadiene from heavy component impurities (cis-2-butene, 1, 2-butadiene, ethylacetylene, C-five, C-six, dimer, TBC, toluene and the like) by utilizing the relative volatility difference of materials in the tower, removing heavy components from the tower kettle, and distilling out 1, 3-butadiene and a medium with relatively close relative volatility at the tower top. According to the analysis of the setting actions of the light component removal tower and the heavy component removal tower, the reflux tank of the heavy component removal tower does not have the dewatering capacity, and the butadiene water value is simply removed by the separating funnel of the reflux tank of the light component removal tower in the initial stage of butadiene device production. The dehydration principle of the light component removal tower is the same as that of the heavy component removal tower, water is discharged as light component in a large amount of butadiene, and the gas phase extraction amount at the top of the heavy component removal tower is three times that of the light component removal tower, so that the dehydration capacity of the heavy component removal tower is stronger than that of the light component removal tower, but a water separating funnel is not arranged in a reflux tank of the heavy component removal tower, so that the water is discharged from the water separating funnel of the reflux tank of the light component removal tower at present. The light component removal tower has limited water discharge capacity of a reflux tank, long time is required for controlling the qualified time of water values, generally about 3-10 days, and the energy and material consumption is wasted. Disclosure of utility model First, the technical problem to be solved The utility model provides a device for improving the qualified speed of the water value of a butadiene device product, which aims to solve the technical problem of how to enable the water value in the industrial butadiene product at the initial driving stage of the butadiene device to be qualified as soon as possible. (II) technical scheme In order to solve the technical problems, the utility model provides a device for improving the qualified speed of the water value of a butadiene device product, wherein a new pipeline is connected between an outlet of a reflux pump of a heavy removal tower and a reflux tank of a light removal tower; and a newly added first valve is arranged at the joint of the newly added pipeline and the reflux tank of the light component removal tower, and a newly added second valve is arranged at the joint of the newly added pipeline and the outlet of the reflux pump of the heavy component removal tower. Further, a new first shower guide valve and a new torch discharge line valve are arranged in front of the first valve. And the nitrogen is introduced into the newly added second guide shower, the second guide shower is used as a nitrogen purging inlet, and the newly added torch discharge line valve is used for purging residual industrial butadiene into a torch system. Further, when the liquid level of the reflux tank of the heavy removal tower reaches 30%, a reflux pump of the hea