CN215328395U - Plate-type electrolytic device for preparing ammonium persulfate by electrolytic method - Google Patents
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- CN215328395U CN215328395U CN202121821185.4U CN202121821185U CN215328395U CN 215328395 U CN215328395 U CN 215328395U CN 202121821185 U CN202121821185 U CN 202121821185U CN 215328395 U CN215328395 U CN 215328395U
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Abstract
The utility model relates to the technical field of ammonium persulfate preparation, in particular to a plate-type electrolytic device for preparing ammonium persulfate by an electrolytic method; the electrolysis device comprises an electrolysis bath body and an electrolysis unit arranged in the electrolysis bath body; the electrolysis unit comprises: the anode, the cathode and the diaphragm assembly are arranged in the diaphragm assembly, the diaphragm assembly is composed of a diaphragm frame and a diaphragm plate, the diaphragm frame is a box body with an open structure at the top end, the diaphragm plate is arranged as a lower section or a middle-lower section of two side walls of the diaphragm frame, the anode is arranged in the diaphragm assembly, the cathode is of a U-shaped structure with two side openings, the cathode is sleeved outside the diaphragm assembly, and two side walls of the U-shaped structure of the cathode are parallel to the diaphragm plate. The electrolysis device can reduce the maintenance cost, prolong the service life, improve the electrolysis efficiency and safely collect hydrogen, thereby reducing the production cost and providing the safety.
Description
Technical Field
The utility model relates to the technical field of ammonium persulfate preparation, in particular to a plate-type electrolytic device for preparing ammonium persulfate by an electrolytic method.
Background
The industrial ammonium persulfate has wide application in the fields of chemical industry, textile industry, petroleum exploitation and the like, and is mainly used as an oxidant, a polymerization assistant for high polymer polymerization, a desizing agent in the textile industry, an additive for petroleum fracturing fluid and the like.
Currently, industrial production of ammonium persulfate is mainly carried outThe electrolytic method and the anthraquinone method are required, and the electrolytic method has the characteristics of simple process operation, small pollution in the production process, easy separation of products and the like, so that the method becomes the most widely applied method for preparing the ammonium persulfate. The electrolysis method comprises preparing electrolyte from ammonium sulfate and sulfuric acid, removing impurities, and electrolyzing to obtain HSO4 -Discharging at the anode to generate peroxodisulfuric acid, reacting with ammonium sulfate to generate ammonium persulfate, and filtering, crystallizing, centrifuging, and drying to obtain ammonium persulfate product when the ammonium persulfate content in the anolyte reaches a certain concentration. And (3) anode reaction: 2HSO4 --2e→H2S2O8(ii) a And (3) cathode reaction: 2H++2e→H2↑；(NH4)2S2O4+H2S2O8→(NH4)2S2O8+H2SO4. An electrolysis device for preparing ammonium persulfate by an electrolysis method in the prior art is commonly used for a plate-shaped diaphragm separated cathode-anode chamber electrolysis bath, and comprises: the electrolytic bath comprises an electrolytic bath body, an anode plate, a cathode plate and an electrolytic diaphragm arranged between the anode plate and the cathode plate, wherein the anode plate, the cathode plate and the electrolytic diaphragm are vertically arranged in the electrolytic bath body in parallel; the commonly used electrolytic diaphragm for preparing ammonium persulfate by the domestic electrolytic method mainly comprises an ionic diaphragm and a ceramic diaphragm.
Because the preparation of ammonium persulfate needs higher corrosion resistance, high temperature resistance, water permeability and higher hardness of the electrolytic diaphragm, the main problems of the prior art are as follows: (1) the ceramic diaphragm is fragile, low in mechanical strength, easy to damage in the installation and use processes, short in service life (about 1 year), high in maintenance cost and high in labor intensity; (2) the nonstandard pores of the ceramic diaphragm (plate type, the pore diameter is 0.45-8 microns) can increase the energy consumption of electrolysis, thereby increasing the production cost; (3) the ceramic diaphragm has uneven thickness (5-8mm), so that a plurality of diaphragms are damaged in the installation process, and the maintenance cost is further increased; (4) the hydrogen is discharged disorderly, so that potential safety hazards exist; (5) the concentration of the cathode is not uniform, and the electrolysis efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a plate-type electrolytic device for preparing ammonium persulfate by an electrolytic method, which aims to solve the problem that the existing plate-type electrolytic device has potential safety hazard due to the unorganized hydrogen emission; the concentration of catholyte is not uniform, and the electrolysis efficiency is low; the utility model can reduce the maintenance cost, prolong the service life, improve the electrolysis efficiency and safely collect hydrogen, thereby reducing the production cost and providing the safety.
The utility model provides a plate-type electrolytic device for preparing ammonium persulfate by an electrolytic method, which adopts the following technical scheme:
a plate-type electrolytic device for preparing ammonium persulfate by an electrolytic method comprises an electrolytic bath body and an electrolytic unit arranged in the electrolytic bath body;
the electrolysis unit includes: the diaphragm assembly comprises a diaphragm frame and a diaphragm plate, the diaphragm frame is a box body with an open top end, the diaphragm plate is arranged at the lower section or the middle-lower section of two parallel side walls of the diaphragm frame, the anode is arranged in the diaphragm assembly, the cathode is in a U-shaped structure with two side openings, the cathode is sleeved on the outer side of the diaphragm assembly, and two side walls of the U-shaped structure of the cathode are parallel to the diaphragm plate.
In the plate-type electrolysis apparatus for producing ammonium persulfate by the above-described electrolysis method, preferably, the anode is an anode case, and anode material layers are welded to both sides of the anode case opposite to the diaphragm plate.
In the plate-type electrolysis device for preparing ammonium persulfate by the electrolysis method, preferably, the electrolysis device further comprises a cover part matched with the opening above the electrolysis bath body, and the cover part is provided with a plurality of hydrogen collecting holes.
The plate-type electrolytic device for preparing ammonium persulfate by the electrolytic method preferably further comprises a plurality of partition plates arranged in the electrolytic cell body, wherein the partition plates can divide the electrolytic cell body into a plurality of areas, and each area is provided with at least one group of electrolytic units; more preferably, each area of the electrolytic cell body is correspondingly provided with an anolyte inlet and outlet and a catholyte inlet and outlet.
In the plate-type electrolytic device for preparing ammonium persulfate by the electrolytic method, preferably, each group of the electrolytic units comprises a plurality of anodes, a plurality of cathodes and a diaphragm assembly; the diaphragm assembly consists of a diaphragm frame and a plurality of diaphragm plates, wherein the diaphragm frame is divided into a plurality of chambers, an anode is arranged in each chamber, a U-shaped cathode is sleeved outside each chamber, and the lower sections or the middle and lower sections of the two side walls of each chamber parallel to the diaphragm plates are provided with the diaphragm plates.
In the plate-type electrolysis device for preparing ammonium persulfate by the electrolysis method, the diaphragm plate is preferably a rectangular silicon carbide diaphragm plate.
In the plate-type electrolysis device for preparing ammonium persulfate by the electrolysis method, the thickness of the diaphragm plate is preferably 2.9-3.1 mm; more preferably 3 mm.
In the plate-type electrolysis device for preparing ammonium persulfate by the electrolysis method, the porosity of the diaphragm plate is preferably 10-20 μm.
Analysis shows that compared with the prior art, the utility model has the advantages and beneficial effects that:
(1) the diaphragm plate is arranged into the two side walls of the diaphragm frame which are parallel to each other, so that the diaphragm frame can support and fix the diaphragm plate, and the phenomenon that the diaphragm plate is easy to damage in the installation and use processes is reduced, thereby reducing the maintenance cost and further reducing the production cost; in addition, the silicon carbide diaphragm plate is corrosion-resistant, high-temperature-resistant, not easy to deform and high in strength, the thickness and the porosity of the diaphragm plate meet the requirements of the utility model, the electrolysis energy consumption can be reduced, the service life of the diaphragm plate can be prolonged, and the cost is further reduced.
(2) The cover piece is arranged to form a closed structure with the electrolytic cell body, and meanwhile, the hydrogen collecting holes are formed in the cover piece, so that by-product hydrogen can be collected, the unorganized emission of hydrogen in a workshop is reduced, and the safety risk is reduced;
(3) the partition plates are arranged to divide the electrolytic cell body into a plurality of electrolytic areas, so that the problems of uneven concentration of catholyte and low electrolytic efficiency are solved.
Drawings
FIG. 1 is a schematic structural view of a plate-type electrolytic apparatus for producing ammonium persulfate by an electrolytic process according to an embodiment of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a left side view of FIG. 1;
FIG. 4 is a front view of a diaphragm assembly of a plate type electrolytic apparatus for producing ammonium persulfate by electrolysis according to an embodiment of the present invention;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a left side view of FIG. 4;
description of reference numerals: 1. a cover member; 2. an electrolytic cell body; 3. a partition plate; 4. a hydrogen gas collection aperture; 5. an anode; 6. a cathode; 7. a diaphragm frame; 8. a diaphragm plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
The utility model provides a plate-type electrolytic device for preparing ammonium persulfate by an electrolytic method, which comprises an electrolytic bath body 2 and an electrolytic unit arranged in the electrolytic bath body 2; the electrolysis unit includes: the cathode structure comprises an anode 5, a cathode 6 and a diaphragm assembly, wherein the diaphragm assembly consists of a diaphragm frame 7 and a diaphragm plate 8, the diaphragm frame 7 is a box body with an open top end, the diaphragm plate 8 is arranged at the lower section or the middle-lower section of two parallel side walls of the diaphragm frame 7, the anode 5 is single and is arranged in the diaphragm assembly, the cathode 6 is a U-shaped structure with two open sides, the cathode 6 is sleeved on the outer side of the diaphragm assembly, and two side walls of the U-shaped structure of the cathode 6 are parallel to the diaphragm plate 8.
In the utility model, the diaphragm plate 8 can separate the anode 5 from the cathode 6, prevent the two electrodes from contacting and causing short circuit, and simultaneously can allow ions in electrolyte to pass through and respectively carry out electrolytic reaction on the anode 5 and the cathode 6; the diaphragm frame 7 is used for installing and fixing the diaphragm plate 8 and can form a diaphragm assembly with the diaphragm plate 8, and the diaphragm assembly is used for placing the anode 5 and storing anolyte; the two side walls of the U-shaped structures of the anode 5, the diaphragm plate 8 and the cathode 6 are vertically arranged in the electrolytic cell body 2 in parallel, so that the two side walls of the U-shaped structure of the cathode 6 can share one anode 5, and the electrolysis efficiency can be improved.
In the utility model, the diaphragm plate 8 is arranged as the lower section or the middle-lower section of the two side walls of the diaphragm frame 7 which are parallel to each other, so that the diaphragm frame 7 can support and fix the diaphragm plate 8, and the phenomenon that the diaphragm plate 8 is easy to damage in the installation and use processes can be reduced, thereby reducing the maintenance cost and further reducing the production cost.
In a specific embodiment of the present invention, the anode 5 is an anode case, and an anode material layer is welded to both sides opposite to the separator plate 8.
In the utility model, the anode material layers are welded on the two sides of the anode 5 parallel to the diaphragm plate 8, so that the U-shaped structures of the anode box and the cathode 6 can form a double electrode, thereby improving the electrolysis efficiency.
In the embodiment of the utility model, the electrolytic device also comprises a cover member 1 matched with the upper opening of the electrolytic bath body 2, and a plurality of hydrogen collecting holes 4 are formed on the cover member 1.
In the utility model, an electrolytic bath body 2 is a shell with an open top end, and a cover member 1 is covered at the opening of the electrolytic bath body 2 and forms a closed structure with the electrolytic bath body 2; through set up hydrogen collecting hole 4 on cover 1, thereby can collect the hydrogen that the electrolysis process produced at hydrogen collecting hole 4 department connecting tube, reduce the potential safety hazard.
In the embodiment of the utility model, the electrolysis device also comprises a plurality of separators 3 arranged in the electrolysis bath body 2, the plurality of separators 3 can divide the electrolysis bath body 2 into a plurality of areas, and each area is provided with at least one group of electrolysis units; more preferably, each area of the electrolytic bath body 2 is correspondingly provided with an anolyte inlet and a catholyte inlet and outlet, for example, a catholyte inlet can be arranged on one side wall of a certain area of the electrolytic bath, and a catholyte outlet can be arranged on the other opposite side wall of the certain area of the electrolytic bath, so that catholyte in the certain area of the electrolytic bath can be input from the inlet and output from the outlet according to the conditions. The anolyte import can set up on diaphragm frame 7 does not contain the lateral wall of diaphragm plate 8, and the anolyte export sets up on another relative lateral wall of diaphragm frame 7, can communicate the output pipeline export of the storage device of anolyte with the anolyte import to realize the input of anolyte, realize the output of anolyte like the same.
In the utility model, the plurality of the separators 3 can divide the electrolytic bath body 2 into a plurality of different areas, and compared with an electrolytic device in one area, the arrangement of the separators 3 can fully utilize the space of the electrolytic bath body 2 and make the distribution of catholyte more uniform, thereby improving the electrolytic efficiency.
In a particular embodiment of the utility model, each group of said electrolysis cells comprises a plurality of anodes 5, a plurality of cathodes 6 and a membrane assembly; the diaphragm assembly consists of a diaphragm frame 7 and a plurality of diaphragm plates 8, wherein the diaphragm frame 7 is divided into a plurality of chambers, an anode 5 is arranged in each chamber, a U-shaped cathode 6 is sleeved outside each chamber, and the diaphragm plates 8 are arranged at the lower sections or the middle and lower sections of two side walls of each chamber parallel to the diaphragm plates 8.
In the utility model, the diaphragm frame 7 is arranged into a plurality of chambers, the lower section or the middle-lower section of the two side walls of each chamber is arranged into the diaphragm plate 8, each chamber is correspondingly provided with an anode 5, and the chamber is externally sleeved with a U-shaped cathode 6, so that a plurality of groups of electrolysis units are formed in the electrolysis bath, and the electrolysis efficiency is greatly improved.
In a particular embodiment of the utility model, the diaphragm plate 8 is a rectangular silicon carbide diaphragm plate 8.
In the utility model, the original ceramic diaphragm plate 8 is changed into the silicon carbide diaphragm plate 8, the silicon carbide diaphragm plate 8 has the advantages of corrosion resistance, high temperature resistance, strong hydrophilicity, high mechanical strength and the like, is not easy to damage in the process of preparing ammonium persulfate by an electrolytic method, and the damage of the diaphragm plate 8 can be reduced and the operation cost is reduced due to the arrangement of the silicon carbide diaphragm plate 8.
In a particular embodiment of the utility model, the membrane plate 8 has a thickness of 2.9-3.1 mm; more preferably 3 mm.
In the utility model, the thickness of the diaphragm plate 8 is limited to 2.9-3.1mm, which is more beneficial to the passing of electrolyte ions and simultaneously reduces the energy consumption of electrolysis.
In a particular embodiment of the utility model, the porosity of the membrane plate 8 is between 10 and 20 μm.
According to the utility model, the porosity of the diaphragm plate 8 is changed from 0.45-8 μm to 10-20 μm, the porosity is set so that the porosity of the diaphragm plate 8 is relatively uniform and is suitable for ions in electrolyte to pass through, the product quality is improved, and meanwhile, the thickness and the porosity of the diaphragm plate 8 are further limited, so that the electrolysis energy consumption can be reduced, the service life of the diaphragm plate 8 is prolonged, and the cost is further reduced.
In conclusion, the utility model provides a plate type electrolytic device for preparing ammonium persulfate by an electrolytic method, which comprises an electrolytic cell body 2 and an electrolytic unit arranged in the electrolytic cell body 2, wherein the electrolytic unit comprises an anode 5, a cathode 6 and a diaphragm assembly, the diaphragm assembly consists of a diaphragm frame 7 and a diaphragm plate 8, the anode 5 and anode liquid are placed and stored through the diaphragm assembly, the diaphragm plate 8 is arranged at the lower section or the middle-lower section of two side walls which are parallel to each other of the diaphragm frame 7, the diaphragm frame 7 plays a role of fixed support for the diaphragm plate 8, and the phenomenon that the diaphragm plate 8 is easily damaged in the installation and use process is reduced, so that the maintenance cost is reduced, and the production cost is further reduced; in addition, the corrosion-resistant and high-temperature-resistant rectangular silicon carbide diaphragm plate 8 is adopted, the thickness and the porosity of the diaphragm plate 8 are further limited, the electrolysis energy consumption can be reduced, the service life of the diaphragm plate 8 can be prolonged, and the cost is further reduced. Reference will now be made to specific embodiments.
Examples
A plate-type electrolytic device for preparing ammonium persulfate by an electrolytic method comprises an electrolytic bath body 2 and a cover member 1 matched with the electrolytic bath body 2, wherein the cover member 1 is covered at an opening of the electrolytic bath body 2 and forms a closed structure with the electrolytic bath body 2; the cover piece 1 is provided with a plurality of hydrogen collecting holes 4, the hydrogen collecting holes 4 can be externally connected with pipelines to collect hydrogen generated in the electrolytic process, and the electrolytic device with a closed structure can reduce potential safety hazards compared with the electrolytic device with an opening in the past.
It should be noted that, the electrolytic cell body 2 in this embodiment is a rectangular shell with an open top, in other embodiments, the electrolytic cell body 2 may also be circular, oval, etc., and the size and shape of the electrolytic cell body 2 are not limited; the hydrogen collecting holes 4 are used for collecting hydrogen in the electrolysis process, and the position, the size and the shape of the hydrogen collecting holes 4 are not limited.
As shown in FIG. 2, the plate-type electrolyzer further comprises a partition plate 3 disposed in the electrolyzer body 2. in this embodiment, a partition plate 3 is installed in the electrolyzer body 2 to divide the electrolyzer body 2 into two different areas; compared with the previous electrolytic device in one area, the arrangement of the partition plate 3 ensures that the concentration of the catholyte electrolyzed at two sides and the concentration of the middle catholyte tend to be consistent, the distribution of the catholyte is more uniform, and the electrolytic efficiency is improved.
It should be noted that, the separator 3 is used to divide the electrolyzer body 2 into different areas, wherein the height of the separator 3 can be smaller than the electrolyzer body 2 or the same as the height of the electrolyzer body 2, and when in use, the heights of the cathode and anode electrolytes in the electrolyzer are both smaller than the height of the separator 3, so that the cathode and anode electrolytes in the two areas separated by the electrolyzer body 2 through the separator 3 are not communicated with each other; the partition boards 3 and the electrolytic bath body 2 can be fixedly connected or detachably connected, and the number of the partition boards 3 is not limited.
As shown in figures 3-6, the plate-type electrolysis device also comprises an electrolysis unit arranged in the electrolysis bath body 2, the electrolysis unit can be a set of electrolysis elements or a group of electrolysis units comprising a plurality of sets of electrolysis elements, and the embodiment of the utility model provides the electrolysis device comprising two groups of electrolysis units in one electrolysis bath, and the two groups of electrolysis units are separated by a partition plate 3. Each group of electrolysis units comprises five sets of electrolysis elements, the diaphragm frame 7 of the five sets of electrolysis elements can be of an integral structure or can be separated and independent, if the five sets of electrolysis elements are of the integral structure, the inside of one large diaphragm frame 7 is divided into five chambers along the direction of the partition plate 3, in the embodiment, the diaphragm frame 7 is a large box body with an opening at the upper part, the inside of the large box body is divided into five chambers with the same size, each chamber is communicated with each other through a through hole formed in the diaphragm frame 7 during the electrolytic reaction, and each chamber can be communicated with each other when the anolyte is input or output, so that the anolyte is input from one end of the frame of the partition plate 3 and is output from the other end; the diaphragm plates 8 are embedded in the middle-lower sections of the two parallel side walls of the diaphragm frame 7, the diaphragm plates 8 are correspondingly embedded in each side wall according to the size and the number of the chambers, namely the middle-lower sections of the two side walls parallel to the diaphragm 3 in each chamber are set to be rectangular silicon carbide diaphragm plates 8, in the embodiment, five diaphragm plates 8 are embedded in each integral side wall parallel to the diaphragm 3, and each diaphragm plate 8 is distributed on the diaphragm frame 7 at intervals; the bottom wall of each cavity of the diaphragm frame 7 is provided with a clamping groove, and the anode 5 is arranged in the clamping groove of each cavity of the diaphragm frame 7; the cathode 6 is a U-shaped structure with openings at two sides, the cathode 6 is sleeved at the outer side of each cavity of the diaphragm frame 7, and two side walls of the U-shaped structure of each cathode 6 are parallel to the diaphragm plate 8.
In the present embodiment, the anode 5 is a platinum electrode, the cathode 6 is a graphite electrode, the diaphragm plate 8 is a rectangular silicon carbide diaphragm plate 8, the thickness of the diaphragm plate 8 is 3mm, and the porosity of the diaphragm plate 8 is 10 to 20 μm; the number and shape of the chambers into which the inside of the diaphragm frame 7 is divided are not limited; in the embodiment, the partition board 3 divides the electrolytic cell body 2 into two areas, two groups of diaphragm assemblies are arranged in each area, each group of diaphragm assemblies is divided into five chambers with the same size, and each chamber is correspondingly provided with a group of anodes 5 and a group of cathodes 6.
The specific use of the plate-type electrolytic apparatus of the present invention will be briefly described below by taking as an example a specific process for producing ammonium persulfate by electrolysis. The process for preparing ammonium persulfate by an electrolytic method mainly comprises the following steps:
(1) preparing a cathode electrolyte: adding water into a cathode ground tank, slowly adding sulfuric acid, pumping the mixture into a cathode high-level tank until the acidity is 1.0-1.3 mol/L, flowing back into the cathode ground tank through an electrolytic tank, and adding sulfuric acid to adjust the acidity to 1.0-1.3 mol/L;
(2) preparing anode electrolyte: beating the centrifugal mother liquor to a batching post secondary batching No. 1 tank, putting concentrated wet ammonium sulfate into the No. 1 tank, starting stirring for a period of time, enabling the solution to flow into a secondary batching No. 2 tank through a pipeline, starting a liquid beating pump to beat the solution into an anode elevated tank, and controlling the content of ammonium sulfate to be 460-490 g/L;
(3) respectively starting a cathode and anode pumping pump, pumping cathode and anode electrolyte prepared at a batching position into a cathode and anode high-level tank, opening a liquid discharging bottom valve of the high-level tank, opening a cathode and anode feeding small valve of the electrolytic tank to enable the cathode and anode electrolyte to uniformly flow into corresponding positions in the electrolytic tank, opening a circulating water inlet and outlet valve to ensure the electrolytic temperature, adjusting the voltage of a rectifier cabinet, adjusting the size of the circulating water to control the temperature to be 35-45 ℃, adjusting the flow rate of the cathode and anode, and controlling the pH value of a cathode liquid outlet solution to be 1-2;
(4) the anode electrolysis reflux liquid flows back to a No. 4 feeding kettle, primary material mixing is completed, ammonium sulfate is fed, the materials are fed while stirring, the materials are fully dissolved, the solution flows into a No. 3 material mixing kettle, flows into a No. 4 feeding tank through an overflow pipe, ammonia is introduced until the pH value is below 7, a liquid pumping pump is started, and the solution is pumped to remove crystals through a filter;
(5) refluxing the cathode electrolysis reflux liquid into a No. 1 acid preparation ground tank, adding acid and water until the acidity is 1.0-1.3 mol/L, and pumping the cathode electrolysis reflux liquid back to the cathode head tank for recycling;
(6) starting stirring when the crystallization liquid pumped from the filter is connected to a stirring beam in a No. 1 tank, opening a No. 2 tank liquid receiving valve after the whole tank liquid is fully pumped, closing a No. 1 liquid inlet valve, simultaneously opening a No. 1 inlet and outlet temperature-reducing saline valve, closing a saline inlet and outlet valve when the temperature is reduced to-7-0 ℃ at a constant speed, opening a No. 2 inlet and outlet saline valve after the No. 2 tank is fully pumped, reducing the temperature for No. 2, and informing a centrifugal station personnel to prepare blanking after the cyclic crystallization temperature is reduced to-7-0 ℃;
(7) and after the temperature of the crystals is reduced, opening a kettle bottom valve of the crystallization kettle, putting the feed liquid into a centrifuge for centrifugation in several times, and putting wet products into a skip car for drying.
In this embodiment, the silicon carbide diaphragm plate is substantially lossless; the power consumption is reduced from the original 2580 to 2360.
10000 tons of ammonium persulfate are produced annually, and the electricity is 0.54 yuan/degree. The utility model can realize the following economic benefits in the year:
1) the annual can save (2580-;
it should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.
Claims (10)
1. A plate-type electrolytic device for preparing ammonium persulfate by an electrolytic method is characterized by comprising an electrolytic tank body and an electrolytic unit arranged in the electrolytic tank body; the electrolysis unit includes: the diaphragm assembly comprises a diaphragm frame and a diaphragm plate, the diaphragm frame is a box body with an open top end, the diaphragm plate is arranged at the lower section or the middle-lower section of two parallel side walls of the diaphragm frame, the anode is arranged in the diaphragm assembly, the cathode is in a U-shaped structure with two side openings, the cathode is sleeved on the outer side of the diaphragm assembly, and two side walls of the U-shaped structure of the cathode are parallel to the diaphragm plate.
2. The electrolysis device according to claim 1, wherein the anode is an anode case, and a layer of anode material is welded to both sides opposite to the diaphragm plate.
3. The electrolyzer of claim 1 further comprising a lid member adapted to fit over the opening above the electrolyzer body, said lid member having a plurality of hydrogen gas collection holes formed therein.
4. The electrolyzer of any of claims 1-3 further comprising a plurality of separators disposed within the electrolyzer body, the plurality of separators dividing the electrolyzer body into a plurality of zones, each zone having at least one group of electrolysis cells.
5. The electrolysis device according to claim 4, wherein each area of the electrolysis cell body is provided with an anolyte inlet and outlet and a catholyte inlet and outlet correspondingly.
6. The electrolysis device according to claim 4, wherein each set of said electrolysis cells comprises a plurality of anodes, a plurality of cathodes, and a membrane assembly; the diaphragm assembly consists of a diaphragm frame and a plurality of diaphragm plates, wherein the diaphragm frame is divided into a plurality of chambers, an anode is arranged in each chamber, a U-shaped cathode is sleeved outside each chamber, and the lower sections or the middle and lower sections of the two side walls of each chamber parallel to the diaphragm plates are provided with the diaphragm plates.
7. The electrolysis device of claim 1, wherein the diaphragm plate is a rectangular silicon carbide diaphragm plate.
8. The electrolysis device according to claim 7, wherein the membrane plate has a thickness of 2.9-3.1 mm.
9. The electrolysis device according to claim 8, wherein the membrane plate has a thickness of 3 mm.
10. The electrolysis device according to any one of claims 5 to 9, wherein the porosity of the separator plate is 10 to 20 μm.
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| CN202121821185.4U CN215328395U (en) | 2021-08-05 | 2021-08-05 | Plate-type electrolytic device for preparing ammonium persulfate by electrolytic method |
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