CN210765536U

CN210765536U - Succinic acid electrolytic tank

Info

Publication number: CN210765536U
Application number: CN201920797594.1U
Authority: CN
Inventors: 潘洪明; 唐正飞
Original assignee: Suzhou Fenggang Titanium Products And Equipment Manufacturing Co ltd
Current assignee: Suzhou Fenggang Titanium Products And Equipment Manufacturing Co ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-06-16
Anticipated expiration: 2029-05-30

Abstract

The utility model relates to a succinic acid electrolytic cell, wherein the upper end of a bracket is fixedly provided with an electrolytic cell shell, and the top of the electrolytic cell shell is provided with an upper end cover; the two ends of the outer part of the electrolytic cell shell are respectively provided with an electrolyte inlet and an electrolyte outlet; a plurality of electrolytic assemblies which are distributed in sequence are arranged in the electrolytic cell shell; the electrolytic component consists of a cathode component and an anode component which are oppositely arranged; the cathode assembly and the anode assembly are respectively connected with the conductive copper bars positioned at two ends in the electrolytic bath shell; the plurality of cathode plates are fixed between the two cathode conductive copper bars through fasteners, and the cathode conductive copper bars are in contact with the conductive copper bars; the anode plates are fixed between the two anode conductive copper bars through fasteners, and the anode conductive copper bars are in contact with the conductive copper bars; crisscross setting from top to bottom between a plurality of negative plates and the anode plate, the utility model discloses a no diaphragm electrolysis, the life of anode plate and negative plate is high, and low in manufacturing cost has improved the stability of electrolysis efficiency and electrolysis trough, can also effectual control pollute.

Description

Succinic acid electrolytic tank

Technical Field

The utility model belongs to the electrochemical synthesis field especially relates to a succinic acid electrolysis trough for processing succinic acid.

Background

Succinic acid, which is widely used in food processing, medical hygiene, and agriculture, and is also an intermediate for synthesizing photographic chemicals; meanwhile, succinic acid is an important raw material for synthesizing degradable polyester PBS, so that the domestic succinic acid capacity cannot meet the market demand at present, and the succinic acid needs to be imported every year; the limited succinic acid capacity becomes a bottleneck for the development of the PBS industry. At present, methods for producing succinic acid include chemical synthesis methods, biological methods (biotransformation and fermentation methods), electrolytic methods, etc., but these processing methods have high operation conditions and raw materials, expensive catalysts, or low yield and purity.

The electrolytic method takes maleic anhydride as a raw material to prepare the succinic acid by electrolytic reduction, the electrolytic synthesis technology and process are mature through development of nearly 80 years, the electrolytic yield, the current efficiency and the conversion rate are high, the high-purity succinic acid can be prepared, and the zero discharge of wastewater is realized by the mother liquor recycling technology, so that the method is a real green chemical synthesis technology. At present, various electrochemical techniques for synthesizing succinic acid, such as a membrane method, a non-membrane method, and paired electrosynthesis, have been developed.

In order to prevent succinic acid generated by a cathode from diffusing to an anode to be further oxidized to influence current efficiency and electrolysis yield, a diaphragm is generally used for separating the cathode from the anode, and in practice, the diaphragm has a plurality of defects, such as poor selectivity and conductivity, fragility, difficulty in installation, high price of an inlet membrane and the like, which causes high energy consumption and high operation strength in the electrolytic production of succinic acid and limits the development of the electrolytic production.

Later, people research and discover that succinic acid generated by a cathode diffuses to an anode to be further oxidized to influence the current efficiency and the electrolysis yield, so that a technology for producing succinic acid by diaphragm-free electrolysis is developed, the diaphragm-free electrolysis method simplifies the equipment structure, greatly reduces the investment, simplifies the operation and has small maintenance workload.

The diaphragm-free electrolytic synthesis succinic acid small test and industrial mold test technology is successively developed from 1994, the succinic acid is produced by adopting the technology, compared with the traditional diaphragm production technology, the energy is saved, in addition, the generated waste gas is less, but based on the current problems, the method also has the problems of short service life of the cathode and the anode, peculiar smell in a plant area, inconvenience for environmental protection, high labor intensity, low electrolysis efficiency and the like caused by frequent replacement of the cathode and the anode.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a succinic acid electrolytic cell which has low manufacturing cost, environmental protection and no pollution, long service life of an anode plate and a cathode plate and high electrolysis efficiency and stability of the electrolytic cell and is used for electrolyzing succinic acid.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a succinic acid electrolytic cell comprises a bracket, an electrolytic cell shell, an upper end cover, a cathode assembly, an anode assembly and a conductive copper bar; an electrolytic cell shell is fixedly arranged at the upper end of the bracket, and an upper end cover is arranged at the top of the electrolytic cell shell; an electrolyte inlet and an electrolyte outlet are respectively arranged at two ends of the outer part of the electrolytic cell shell; a plurality of sequentially distributed electrolytic assemblies are arranged in the electrolytic cell shell; the electrolytic assembly consists of a cathode assembly and an anode assembly which are oppositely arranged; the cathode assembly and the anode assembly are respectively connected with conductive copper bars positioned at two ends in the electrolytic bath shell;

the cathode assembly comprises a cathode plate, a cathode conductive copper bar and a fastener; the plurality of cathode plates are fixed between the two cathode conductive copper bars through fasteners, and the cathode conductive copper bars are in contact with the conductive copper bars;

the anode assembly comprises an anode plate, an anode conductive copper bar and a fastener; the anode plates are fixed between the two anode conductive copper bars through fasteners, and the anode conductive copper bars are in contact with the conductive copper bars; the plurality of cathode plates and the plurality of anode plates are arranged in a vertically staggered manner.

Furthermore, the structures of the cathode plate and the anode plate are both L-shaped, and the structures of the cathode plate and the anode plate are mutually symmetrical.

Further, the anode plate comprises an anode substrate and an anode coating coated outside the anode substrate; the anode base material is an alloy material related to titanium/tantalum/zirconium/niobium/titanium, tantalum, zirconium and niobium; the anode coating is ruthenium/ruthenium alloy oxide/iridium alloy oxide/platinum alloy anode oxide.

Furthermore, the cathode plate is a pure lead/pure cadmium/cadmium alloy composite material/lead alloy/steel lead composite material/lead steel lead alloy composite material.

Further, the electrolyte inlet is positioned below the electrolyte outlet.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the utility model discloses the succinic acid electrolysis trough of scheme, it adopts no diaphragm electrolysis, and the life of anode plate and negative plate is high, and the structure of electrolysis trough is simple relatively simultaneously, has reduced manufacturing cost, has improved the stability of electrolysis efficiency and electrolysis trough to can also effectual control pollute, better production and processing demand that has accorded with reality.

Drawings

The technical scheme of the utility model is further explained by combining the attached drawings as follows:

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic structural view of an electrolytic module;

FIG. 4 is a schematic structural view of a cathode plate;

wherein: the electrolytic cell comprises a support 1, an electrolytic cell shell 2, a cathode component 3, an anode component 4, a conductive copper bar 5, an upper end cover 6, an electrolyte inlet 7, an electrolyte outlet 8, a cathode conductive copper bar 30, a cathode plate 31, an anode conductive copper bar 40 and an anode plate 41.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to the attached drawings 1-4, the succinic acid electrolytic cell of the utility model comprises a bracket 1, an electrolytic cell shell 2, an upper end cover 6, a cathode component 3, an anode component 4 and a conductive copper bar 5; an electrolytic cell shell 2 is fixedly arranged at the upper end of the bracket 1, and an upper end cover 6 is arranged at the top of the electrolytic cell shell 2; an electrolyte inlet 7 and an electrolyte outlet 8 are respectively arranged at two ends of the outer part of the electrolytic cell shell 1; a plurality of sequentially distributed electrolytic assemblies are arranged in the electrolytic cell shell 1; the electrolytic assembly consists of a cathode assembly 3 and an anode assembly 4 which are oppositely arranged; the cathode component 3 and the anode component 4 are respectively connected with conductive copper bars 5 positioned at two ends inside the electrolytic bath shell 1.

Specifically, the cathode assembly 3 comprises a cathode plate 31, a cathode conductive copper bar 30 and a fastener; a plurality of the cathode plates 31 are fixed between the two cathode conductive copper bars 30 through fasteners, and the cathode conductive copper bars 30 are in contact with the conductive copper bars 5.

Specifically, the anode assembly 4 comprises an anode plate 41, an anode conductive copper bar 40 and a fastener; a plurality of the anode plates 41 are fixed between the two anode conductive copper bars 40 through fasteners, the anode conductive copper bars 40 are in contact with the conductive copper bars 5, and the plurality of the anode plates 31 and the plurality of the anode plates 41 are arranged in a vertically staggered manner.

As a further preferred embodiment, the cathode plate 31 and the anode plate 41 are both L-shaped, and are symmetrical to each other, and the lower plate portion of the cathode plate 31 and the upper half portion of the anode plate 41 are staggered when specifically installed.

As a further preferred embodiment, the anode plate 41 comprises an anode substrate and an anode coating coated outside the anode substrate; the anode base material is a titanium/tantalum/zirconium/niobium/titanium, tantalum, zirconium and niobium related alloy material; the anode coating is ruthenium/ruthenium alloy oxide/iridium alloy oxide/platinum alloy anode oxide.

As a further preferred embodiment, the cathode plate 31 is a pure lead/pure cadmium/cadmium alloy,/cadmium alloy composite/lead alloy/steel lead composite/lead steel lead alloy composite.

As a further preferred embodiment, the electrolyte inlet 7 is located below the electrolyte outlet 8 and arranged below the electrolyte outlet, so that the electrolyte can flow from bottom to top, the flowing speed is low, the electrolysis efficiency is improved, and the problem that the electrolysis efficiency is poor due to too high flow speed of the electrolyte is solved.

In addition, in the present embodiment, the number of cathode assemblies 3 and anode assemblies 4 is four.

In operation, electrolyte flows into the cell housing from the electrolyte inlet 7, is electrolyzed using the cathode and anode assemblies, and finally flows out from the electrolyte outlet 8.

The utility model discloses a succinic acid electrolysis trough, it adopts no diaphragm electrolysis, and the life of anode plate and negative plate is high, and the structure of electrolysis trough is simple relatively simultaneously, has reduced manufacturing cost, has improved the stability of electrolysis efficiency and electrolysis trough, reduction in production cost to can also effectual control pollute, better the production and processing demand that has accorded with reality.

The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims

1. A succinic acid electrolytic cell is characterized in that: comprises a bracket, an electrolytic cell shell, an upper end cover, a cathode component, an anode component and a conductive copper bar; an electrolytic cell shell is fixedly arranged at the upper end of the bracket, and an upper end cover is arranged at the top of the electrolytic cell shell; an electrolyte inlet and an electrolyte outlet are respectively arranged at two ends of the outer part of the electrolytic cell shell; a plurality of sequentially distributed electrolytic assemblies are arranged in the electrolytic cell shell; the electrolytic assembly consists of a cathode assembly and an anode assembly which are oppositely arranged; the cathode assembly and the anode assembly are respectively connected with conductive copper bars positioned at two ends in the electrolytic bath shell;

2. The succinic acid electrolytic cell according to claim 1, characterized in that: the structure of the negative plate and the structure of the positive plate are both L-shaped, and the structures of the negative plate and the positive plate are mutually symmetrical.

3. The succinic acid electrolytic cell according to claim 1, characterized in that: the anode plate comprises an anode substrate and an anode coating coated outside the anode substrate.

4. The succinic acid electrolytic cell according to claim 1, characterized in that: the electrolyte inlet is positioned below the electrolyte outlet.