CN-224207993-U - Continuous production device suitable for various hydroximic extractant

CN224207993UCN 224207993 UCN224207993 UCN 224207993UCN-224207993-U

Abstract

The utility model belongs to the technical field of chemical equipment, and particularly relates to a continuous production device suitable for various hydroximic extractants, which comprises a continuous feeding unit, a microchannel reaction unit, a continuous phase separation unit, a continuous rectification unit, a continuous decolorizing unit, a continuous water washing unit, a continuous dehydration unit and a finished product tank which are sequentially connected, wherein a discharge port of the microchannel reaction unit is respectively connected with a feed port of the continuous phase separation unit, a feed port of the continuous rectification unit and a feed port of the continuous decolorizing unit through pipelines, and valves are arranged between the discharge port of the continuous phase separation unit and the feed port of the continuous rectification unit, between the discharge port of the continuous rectification unit and the feed port of the continuous decolorizing unit, and on the pipelines. The utility model not only realizes the continuity of the post-treatment section of the product, but also modularizes the post-treatment process, can select a proper post-treatment process according to the actual post-treatment requirement of the product, and is suitable for the continuous synthesis of various hydroximic extractants.

Inventors

LIU YANG
LIU LONGCHENG
LIU YANG
LI XIN
CHEN ROU
HUANG RUOFENG
ZOU QIAN

Assignees

重庆康普化学工业股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250521

Claims (10)

1. The continuous production device suitable for the various hydroximic extractants comprises a continuous feeding unit and a microchannel reaction unit, and is characterized by further comprising a continuous phase separation unit, a continuous rectification unit, a continuous decolorization unit, a continuous washing unit, a continuous dehydration unit and a finished product tank which are sequentially connected, wherein the discharge port of the microchannel reaction unit is respectively connected with the feed port of the continuous phase separation unit, the feed port of the continuous rectification unit and the feed port of the continuous decolorization unit through pipelines, and valves are arranged between the discharge port of the continuous phase separation unit and the feed port of the continuous rectification unit, between the discharge port of the continuous rectification unit and the feed port of the continuous decolorization unit, and on the pipelines.
2. The continuous production device for various hydroxamic extraction agents according to claim 1, wherein the discharge port of the microchannel reaction unit is connected with the feed port of the continuous washing unit and the finished product tank respectively through pipelines, and a valve is arranged between the discharge port of the continuous decolorizing unit and the feed port of the continuous washing unit.
3. The continuous production device for various hydroxamic extraction agents according to claim 2, wherein the discharge port of the continuous phase separation unit is connected with the feed port of the continuous decolorizing unit, and a valve is arranged between the discharge port of the continuous phase separation unit and the feed port of the continuous decolorizing unit.
4. The continuous production device for various hydroxamic extraction agents according to claim 3, wherein the discharge port of the continuous phase separation unit is connected with the feed port of the continuous water washing unit, and a valve is arranged between the discharge port of the continuous phase separation unit and the feed port of the continuous water washing unit.
5. The continuous production device for various hydroxamic extraction agents according to claim 1 or 4, wherein the discharge port of the continuous rectification unit is connected with the feed port of the continuous washing unit, and a valve is arranged between the discharge port of the continuous rectification unit and the feed port of the continuous washing unit.
6. The continuous production device for various hydroxamic extractants according to claim 1, wherein the continuous phase separation unit comprises a centrifugal extractor and a membrane separator, a light phase outlet of the centrifugal extractor is connected with a feed inlet of the continuous rectification unit, and a heavy phase outlet of the centrifugal extractor is connected with a feed inlet of the membrane separator.
7. The continuous production device for various hydroxamic extraction agents according to claim 1, wherein the continuous rectification unit comprises a rectification column I, a tubular reactor I and a finished product diluent storage tank, wherein the column bottom discharge of the rectification column I and the finished product diluent in the finished product diluent storage tank are both conveyed to the tubular reactor I, and the discharge port of the tubular reactor I is connected with the feed port of the continuous decolorizing unit.
8. The continuous production device for various hydroxamic extraction agents according to claim 1, wherein the continuous decolorization unit comprises a sulfuric acid storage tank and a tubular reactor II, sulfuric acid in the sulfuric acid storage tank and the discharge of the tubular reactor I are both conveyed to the tubular reactor II, and the discharge port of the tubular reactor II is connected with the feed port of the continuous washing unit.
9. The continuous production apparatus for various kinds of hydroxamic extracts according to claim 1, wherein the continuous washing unit comprises a four-stage countercurrent centrifugal extractor.
10. The continuous production device for various hydroxamic extraction agents according to claim 1, wherein the continuous dehydration unit comprises a rectifying tower II, and a tower kettle discharge port of the rectifying tower II is connected with a finished product tank.

Description

Continuous production device suitable for various hydroximic extractant Technical Field The utility model belongs to the technical field of chemical equipment, and particularly relates to a continuous production device suitable for various hydroxamic extractant. Background The hydroximic extractant has better selectivity to copper, can preferentially extract copper from various elements, and has been widely applied to the copper extraction industry. The industrial synthesis of hydroximic extractant usually adopts kettle type oximation batch reaction, which is to neutralize hydroxylamine salt (hydrochloride or sulfate) through alkali (organic alkali or inorganic alkali) to release free hydroxylamine, and react with aldehyde/ketone substrate to form oxime, the reaction time and the subsequent treatment time are longer, the equipment utilization is low, the production period is longer, the productivity is lower, and the increasingly developed market demands can not be met. Compared with the conventional kettle-type reaction, the micro-channel continuous flow reaction mode has the characteristics of safety, stability, high control automation degree and the like, and uses a pump as a power source for reaction flow to convey materials into a reaction channel, so that the chemical reaction is limited in a small area, the efficient mixing of all reaction raw materials is enhanced, and the chemical reaction is carried out under the continuous flow condition. Compared with kettle reaction, the continuous flow reaction system has the greatest advantages of excellent surface area to volume ratio, effective heat and mass transfer, large reaction contact area, high heat and mass transfer efficiency, short reaction residence time, low probability of side reaction occurrence, high conversion rate, small danger coefficient, and large-scale production. Thus, a microchannel continuous synthesis process suitable for use with hydroxamic extraction agents can be developed. However, the focus of the continuous synthesis process at present is often focused on the continuous flow reaction section of the micro-channel, the focus of the subsequent treatment section is less, and the continuous reaction section and the intermittent post-treatment section are caused because of the great difference of different post-treatment processes. In view of the current situation, it is necessary to design a set of full-continuous equipment comprising a reaction section and a post-treatment section, so as to truly realize the full-process continuity of the hydroxamic extractant from raw materials to finished products. Disclosure of utility model The utility model aims to provide a continuous production device suitable for various hydroxamic extraction agents, so as to solve the problem that the post-treatment section of a microchannel continuous synthesis process is intermittent. In order to achieve the aim, the continuous production device suitable for the various hydroximic extractants comprises a continuous feeding unit, a micro-channel reaction unit, a continuous phase-splitting unit, a continuous rectifying unit, a continuous decolorizing unit, a continuous washing unit, a continuous dewatering unit and a finished product tank which are sequentially connected, wherein a discharge port of the micro-channel reaction unit is respectively connected with a feed port of the continuous phase-splitting unit, a feed port of the continuous rectifying unit and a feed port of the continuous decolorizing unit through pipelines, and valves are arranged between the discharge port of the continuous phase-splitting unit and the feed port of the continuous rectifying unit, between the discharge port of the continuous rectifying unit and the feed port of the continuous decolorizing unit and on the pipelines. The technical scheme has the working principle and beneficial effects that in the scheme, the post-treatment section of the microchannel continuous synthesis process is divided into a continuous phase splitting module, a continuous rectifying module, a continuous decoloring module, a continuous washing module and a continuous dewatering module, so that the full continuity of the post-treatment section is realized. And the microchannel reaction unit is directly connected with the continuous phase-splitting module, the continuous rectifying module and the continuous decolorizing module, so that a producer can select a first post-treatment procedure of the crude product from the phase-splitting, rectifying and decolorizing according to the actual post-treatment requirement of the crude product, and further select whether to carry out the phase-splitting, rectifying and decolorizing treatment on the crude product, and the method is suitable for continuous synthesis of various hydroximic extractants and is suitable for popularization. Optionally, the discharge port of the microchannel reaction unit is connected with the feed port of the continuous washing unit an