Modularized hydrogen peroxide electrolysis production equipment

Abstract

The utility model relates to the technical field of hydrogen peroxide production, and discloses modularized hydrogen peroxide electrolysis production equipment which comprises a body, an eave is fixedly connected to the body, a hydrogen peroxide electrolysis production device is arranged in the body, and the body is provided with a water inlet and a water outlet. The hydrogen peroxide electrolysis production device comprises an electric pile production module and a BOP module, a bottom plate is arranged in the body, an LCP cabinet is fixedly installed on the bottom plate, an MCC cabinet is fixedly installed on the bottom plate, the electric pile production module and the BOP module are designed in a modularized mode, and the situation that the whole system stops due to faults of part of electric piles is avoided; the number of associated stack skid blocks can be increased, the BOP skid block performance is improved to increase the productivity, the equipment investment and the field are not increased proportionally, the production cost is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen peroxide production technical field, concretely is a modular hydrogen peroxide electrolysis production equipment. BACKGROUND

[0002] At present, anthraquinone method is the main method of producing hydrogen peroxide, and its process is that alkyl anthraquinone is prepared into working solution with organic solvent, hydrogen is introduced for hydrogenation under the condition that the pressure is 0.30 MPa, the temperature is 55-65 DEG C and catalyst exists, and then countercurrent oxidation is carried out with air (or oxygen) at 40-44 DEG C, and the hydrogen peroxide aqueous solution product with mass fraction of 20%-30% is prepared through extraction, regeneration, refining and concentration, the method involves dangerous chemical process and dangerous chemicals in the production process, and there is a security risk in the transportation process of the produced high-concentration hydrogen peroxide, and the transportation cost of the hydrogen peroxide purchased by the paper mill accounts for a large part, and there is a risk of supply interruption in case of severe weather.

[0003] The hydrogen peroxide electrolysis production system produced on site can produce alkaline hydrogen peroxide on site, and the hydrogen peroxide produced is used immediately, the storage and transportation risk of hydrogen peroxide is reduced, and the concentration of the produced hydrogen peroxide is about 3.5%, which does not belong to dangerous chemicals, and the safety is high.

[0004] But the above-mentioned equipment in actual use process, hydrogen peroxide electrolysis production system yield is low, the process is unstable, lead to the life of electric pile is short, maintenance is inconvenient, therefore, we propose a kind of modular hydrogen peroxide electrolysis production equipment. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of modular hydrogen peroxide electrolysis production equipment to solve the problems raised in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: the body is included, the roof is fixedly connected on the body, the hydrogen peroxide electrolysis production device is arranged in the body, the hydrogen peroxide electrolysis production device mainly includes electric pile production module and BOP module, the electric pile production module is by multiple electric piles, and the BOP module includes:

[0007] The bottom plate is arranged in the body, the LCP cabinet is fixedly installed on the bottom plate, the MCC cabinet is fixedly installed on the bottom plate, the cathode circulating pump is arranged on the bottom plate, the cathode circulating pump outlet is fixedly connected with cathode circulating pipeline, the cathode circulating pipeline is fixedly connected with electric pile, and the electric pile cathode oxygen inlet is fixedly connected with oxygen circulating pipeline;

[0008] An oxygen circulation pipeline is fixedly connected with an oxygen high-pressure tank, a cathode outlet of the electric pile is fixedly connected with a cathode circulation tank, an outlet of the cathode circulation tank is provided with a cathode liquid discharge pump, and the bottom plate is provided with an anode circulation pump;

[0009] An anode circulation pipeline is fixedly connected with the anode circulation pump, the anode circulation pipeline is fixedly connected with the electric pile, the anode circulation pump is provided with an anode circulation tank, the anode circulation tank is fixedly connected with the anode circulation pump, the anode circulation tank is provided with an anode liquid discharge port, the anode circulation tank is provided with an anode liquid recovery port, the bottom plate is provided with a liquid ring cooler, the bottom plate is provided with an anode cooler, the bottom plate is provided with a cathode filter, and the bottom plate is provided with an anode filter.

[0010] Preferably, the gas inlet of the liquid ring compressor is connected with the oxygen low-pressure tank, and the gas outlet of the liquid ring compressor is connected with the oxygen high-pressure tank. The cavity inside the liquid ring compressor needs liquid, which is used to avoid the sodium hydroxide liquid carried in the oxygen from being changed into solid powder due to high temperature in the compressor, thereby causing abrasion, and to ensure stable operation of the oxygen circulation system.

[0011] Preferably, the anode cooler and the liquid ring cooler are respectively connected with the anode circulation system and the oxygen circulation system through corresponding pipelines, which are used to control the temperature of the anode solution and the working liquid of the liquid ring compressor. The cathode filter and the anode filter are respectively connected in the cathode circulation system and the anode circulation system through pipelines, which are used to filter impurities in the cathode solution and the anode solution.

[0012] Preferably, the inlet of the anode circulation tank is connected with the anode outlet of the electric pile, the outlet of the anode circulation tank is connected with the inlet of the anode circulation pump, forming a circulation system of the anode solution, maintaining the continuous progress of the anode reaction, and the anode circulation tank is provided with a liquid discharge port, which is divided into two branches. One branch is connected with the anode liquid discharge port, and the other branch is connected with the anode liquid recovery port, so as to switch the discharge pipeline according to the generation of the anode liquid, thereby better recycling.

[0013] Preferably, the oxygen circulation pipeline is connected with the cathode oxygen inlet of the electric pile, and the outlet of the oxygen high-pressure tank. The oxygen generated on the anode side and the excess oxygen on the cathode side enter the oxygen low-pressure tank, are pressurized by the liquid ring compressor, then enter the oxygen high-pressure tank, and finally are mixed with fresh oxygen and sent into the electric pile cathode side through the oxygen circulation pipeline to participate in the electrochemical reaction.

[0014] Preferably, one end of the anode circulation pipeline is connected with the outlet of the anode circulation pump, and the other end is connected with the anode inlet of the stack, so that the anode circulation pump can send anode solution into the anode of the stack, thereby better performing production work.

[0015] Preferably, the plurality of stack production modules are connected with a BOP module correspondingly.

[0016] Compared with the prior art, the modular hydrogen peroxide electrolysis production equipment has the following beneficial effects:

[0017] 1. The modular hydrogen peroxide electrolysis production equipment, by setting the hydrogen peroxide electrolysis production device, cooperating with the bottom plate, LCP cabinet, MCC cabinet, cathode circulation pump, oxygen low-pressure tank, anode circulation pump, oxygen high-pressure tank, liquid ring compressor, oxygen circulation pipeline, cathode circulation pipeline, anode circulation pipeline, stack, cathode circulation tank, anode circulation tank, liquid ring cooler, anode cooler, cathode filter, anode filter, thereby better and efficient production.

[0018] 2. The modular hydrogen peroxide electrolysis production equipment, in order to better recover the anode liquid, by setting the anode liquid discharge port and the anode liquid recovery port, thereby better collecting the anode liquid, thereby improving the work efficiency, thereby reducing the cost, thereby improving the reliability. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the utility model;

[0020] Figure 2 It is a structure section plane schematic view of the utility model;

[0021] Figure 3 It is a structure section side view schematic view of the utility model;

[0022] Figure 4 It is a structure section plane schematic view of the utility model.

[0023] In the figure: 1, the body; 2, roof; 3, hydrogen peroxide electrolysis production device; 31, bottom plate; 32, LCP cabinet; 33, MCC cabinet; 34, cathode circulating pump; 35, oxygen low-pressure tank; 36, anode circulating pump; 37, oxygen high-pressure tank; 38, liquid ring compressor; 39, oxygen circulating pipeline; 130, electric pile production module: 140, electric pile: 300, BOP module: 310, cathode circulating pipeline; 311, anode circulating pipeline; 313, cathode circulating tank; 314, anode circulating tank; 315, anode liquid discharge port; 316, anode liquid recovery port; 317, liquid ring cooler; 318, anode cooler; 319, cathode filter; 320, anode filter; 321, cathode liquid pump. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] Please refer to Figures 1-4 The present application provides a technical solution: a modular hydrogen peroxide electrolysis production equipment includes a body 1, the body 1 is fixedly connected with roof 2, the body 1 is provided with hydrogen peroxide electrolysis production device 3.

[0026] In an embodiment of the utility model, the hydrogen peroxide electrolysis production device 3 mainly includes the electric pile production module 130 and BOP module 300, the electric pile production module 130 includes multiple electric piles 140, BOP module 300 is provided with the bottom plate 31, one BOP module of the utility model corresponds multiple electric pile modules, the whole system shutdown caused by the failure of certain electric pile is not solved. Can increase the number of electric pile pry block, make big BOP pry block to realize the production capacity increase. Equipment investment and site will not increase proportionally, the LCP cabinet 32 is fixedly installed on the bottom plate 31, the MCC cabinet 33 is fixedly installed on the bottom plate 31, the cathode circulation pump 34 is arranged on the bottom plate 31, the cathode circulation pump 34 outlet is fixedly connected with cathode circulation pipeline 310, the cathode circulation pipeline 310 is fixedly connected with electric pile 140, the cathode oxygen gas inlet of electric pile 140 is fixedly connected with oxygen circulation pipeline 39, oxygen circulation pipeline 39 is fixedly connected with oxygen high-pressure tank 37, the gas inlet of liquid ring compressor 38 is connected with oxygen low-pressure tank 35, the gas outlet of liquid ring compressor 38 is connected with oxygen high-pressure tank 37, and its cavity needs liquid, which is used to avoid the sodium hydroxide liquid carried in oxygen from being changed into solid powder in the compressor due to high temperature, thereby causing abrasion and ensuring the stable operation of the oxygen circulation system. Open oxygen circulation, cathode circulation and anode circulation, and run at a small frequency when initially running to smoothly start the system. Under the action of cathode circulation pump 34, the cathode solution in cathode circulation tank 313 flows to the cathode of electric pile 140 through cathode circulation pipeline 310. Under the action of anode circulation pump 36, the anode solution in anode circulation tank 314 flows to the anode of electric pile 140 through anode circulation pipeline 311. In electric pile 140, the cathode solution and oxygen from oxygen circulation pipeline 39 occur electrochemical reaction to generate alkaline hydrogen peroxide. At the same time, according to the preset control program, water is continuously added to cathode circulation tank 313 to maintain the stable balance of hydrogen peroxide concentration. The alkali in anode solution occurs electrochemical reaction to generate oxygen and water. With the reaction, the anode liquid level rises due to the continuous addition of liquid alkali. The excess sodium hydroxide solution can be discharged through the liquid outlet of anode circulation tank 314. According to the raw material concentration and production requirements, the anode liquid can be selected to be discharged to anode liquid discharge port 315 or recycled to anode liquid recycling port 316 by operating the related valves. The oxygen generated on the anode side and the excess oxygen not completely reacted on the cathode side enter oxygen low-pressure tank 35. After the oxygen in oxygen low-pressure tank 35 is pressurized by liquid ring compressor 38, it is sent to oxygen high-pressure tank 37. The oxygen in oxygen high-pressure tank 37 is mixed with fresh oxygen and then sent to the cathode side of electric pile 140 through oxygen circulation pipeline 39 to participate in electrochemical reaction. In the oxygen circulation process, liquid ring cooler 317 and anode cooler 318 cool the working liquid of liquid ring compressor 317 and anode solution respectively.

[0027] In an embodiment of the utility model, the air inlet of liquid ring compressor 38 is connected with oxygen low pressure tank 35, the air outlet of liquid ring compressor 38 is connected with oxygen high pressure tank 37, and the cavity inside needs liquid, is used to avoid the sodium hydroxide liquid carried in oxygen to become solid powder in compressor due to high temperature and cause abrasion, ensures the stable operation of oxygen circulation system, oxygen circulation pipeline 39 is fixedly connected with oxygen high pressure tank 37, the cathode outlet of electric pile 140 is fixedly connected with cathode circulation tank 313, the outlet of cathode circulation tank 313 is provided with cathode liquid discharge pump 321, the bottom plate 31 is provided with anode circulation pump 36, anode circulation pump 36 is fixedly connected with anode circulation pipeline 311, anode circulation pipeline 311 is fixedly connected with electric pile 140, oxygen circulation pipeline 39 connects the cathode oxygen inlet of electric pile 140, oxygen circulation pipeline 39 connects the outlet of oxygen high pressure tank 37, the oxygen of anode side and the excessive oxygen of cathode side enter oxygen low pressure tank 35, enter oxygen high pressure tank 37 after pressurization by liquid ring compressor 38, and finally mix with fresh oxygen and are sent into electric pile 140 cathode side through oxygen circulation pipeline 39 and participate in electrochemical reaction, one end of anode circulation pipeline 311 is connected with the outlet of anode circulation pump 36, the other end is connected with the anode inlet of electric pile 140, to realize the function that anode circulation pump 36 sends anode solution into the anode of electric pile 140, anode circulation pump 36 is provided with anode circulation tank 314, anode circulation tank 314 is fixedly connected with anode circulation pump 36, anode circulation tank 314 is provided with anode liquid discharge port 315, the inlet of anode circulation tank 314 is connected with the anode outlet of electric pile 140, the outlet of anode circulation tank 314 is connected with the inlet of anode circulation pump 36, forms the circulation system of anode solution, maintains the continuous performance of anode reaction, anode circulation tank 314 is provided with liquid discharge port, the liquid discharge port is divided into two branches, one branch is connected with anode liquid discharge port 315, the other branch is connected with anode liquid recovery port 316, to switch the discharge pipeline according to the anode liquid generation, anode circulation tank 314 is provided with anode liquid recovery port 316, the bottom plate 31 is provided with liquid ring cooler 317, the bottom plate 31 is provided with anode cooler 318, the bottom plate 31 is provided with cathode filter 319, the bottom plate 31 is provided with anode filter 320, anode cooler 318 and liquid ring cooler 317 are connected with anode circulation system and oxygen circulation system respectively through corresponding pipeline, to control the temperature of anode solution and liquid ring compressor 38 working liquid, cathode filter 319 and anode filter 320 are connected in cathode circulation system and anode circulation system respectively through pipeline, to filter the impurities in cathode solution and anode solution, to control the temperature in proper range, ensures the stable operation of system, along with the performance of cathode reaction, the liquid level of cathode circulation tank 313 rises due to water supplement and the generation of reaction product, when the liquid level reaches the upper limit set by control system, cathode liquid discharge pump 321 is automatically started or is started according to the mode set by control system, and alkaline hydrogen peroxide is discharged to storage or use area,At the same time, the liquid level of the cathode circulating tank 313 is controlled to be stable in a reasonable range by discharging the solution, and the operation parameters of the system are monitored in real time through the control system in the LCP cabinet 32 and the MCC cabinet 33 and the instruments installed on each pipeline and equipment, including but not limited to the flow, pressure and temperature in each circulating pipeline, the voltage and current of the stack 140, and the liquid level of each storage tank. When the stack 140 needs to be cleaned, the cleaning time and number of times are set on the operation interface of the control system, the system automatically starts the oxygen circulation, the cathode circulation and the anode circulation, and the cleaning liquid in the cathode circulating tank 313 and the anode circulating tank 314 enters the cathode and the anode of the stack 140 respectively for cleaning, and the cleaned liquid returns to the corresponding storage tank to form a cleaning circulation. In the cleaning process, the cathode filter 319 and the anode filter 320 can filter the impurities in the cleaning liquid to prevent the impurities from entering the system again. During purging, the control system opens the branch valves of the oxygen circulation pipeline 39 to the anode circulation pipeline 311, and the oxygen in the oxygen circulation system purges the cathode and the anode respectively to remove the residual impurities. When the system needs to stop running, the cathode circulation, the anode circulation and the oxygen circulation are stopped in turn, and each pipeline valve is closed, but some necessary valves are kept open to ensure the safety of the system.

[0028] Working principle: open oxygen circulation, cathode circulation, anode circulation, initial operation with small frequency to start the system smoothly. The cathode solution in the cathode circulation tank 313 flows to the cathode of the stack 140 under the action of the cathode circulation pump 34 through the cathode circulation pipeline 310; the anode solution in the anode circulation tank 314 flows to the anode of the stack 140 under the action of the anode circulation pump 36 through the anode circulation pipeline 311. In the stack 140, the cathode solution reacts with oxygen from the oxygen circulation pipeline 39 to generate alkaline hydrogen peroxide, and at the same time, according to the preset control program, water is continuously added to the cathode circulation tank 313 to maintain the stable balance of the concentration of hydrogen peroxide. The alkali in the anode solution reacts electrochemically at the anode to generate oxygen and water. As the reaction proceeds, the anode liquid level rises due to the continuous addition of liquid alkali, and the excess sodium hydroxide solution can be discharged through the liquid outlet of the anode circulation tank 314. According to the raw material concentration and production requirements, the anode liquid can be discharged to the anode liquid discharge port 315 or recycled to the anode liquid recycling port 316 by operating the relevant valves. The oxygen generated on the anode side and the excess oxygen that has not completely reacted on the cathode side enter the oxygen low-pressure tank 35, and the oxygen in the oxygen low-pressure tank 35 is pressurized by the liquid ring compressor 38 and then sent to the oxygen high-pressure tank 37. The oxygen in the oxygen high-pressure tank 37 is mixed with fresh oxygen and then sent to the cathode side of the stack 140 through the oxygen circulation pipeline 39 to participate in the electrochemical reaction. In the oxygen circulation process, the liquid ring cooler 317 and the anode cooler 318 cool the working liquid of the liquid ring compressor 317 and the anode solution, respectively.With the progress of the cathode reaction, the liquid level of the cathode circulating tank 313 rises due to water replenishment and reaction product generation, when the liquid level reaches the upper limit set by the control system, the cathode discharge pump 321 is automatically started or started according to the mode set by the control system, and the alkaline hydrogen peroxide is discharged to the storage or use area, while the cathode circulating tank 313 liquid level is controlled to be stable in a reasonable range by discharging the solution, through the control system in the LCP cabinet 32 and the MCC cabinet 33 and the instruments installed on each pipeline and equipment, the system operation parameters are monitored in real time, including but not limited to the flow, pressure and temperature in each circulating pipeline, the voltage and current of the stack 140, and the liquid level of each storage tank, when the stack 140 needs to be cleaned, the cleaning time and frequency are set on the control system operation interface, the system automatically starts oxygen circulation, cathode circulation and anode circulation, and the cleaning liquid in the cathode circulating tank 313 and the anode circulating tank 314 enters the cathode and the anode of the stack 140 respectively for cleaning, and the cleaned liquid returns to the corresponding storage tank to form a cleaning cycle, during the cleaning process, the cathode filter 319 and the anode filter 320 can filter impurities in the cleaning liquid to prevent impurities from entering the system again, during purging, the control system opens the branch valves of the oxygen circulation pipeline 39 to the anode circulation pipeline 311, and the oxygen in the oxygen circulation system purges the cathode and the anode respectively, and removes residual impurities, when the system needs to be stopped, the cathode circulation, the anode circulation and the oxygen circulation are stopped in turn, and the pipeline valves are closed, but some necessary valves are kept open to ensure the safety of the system pressure relief, and at the same time, the stack 140 of the present application is connected with the energy storage system and the rectifier device, the electric energy is stored, the direct current is provided to the hydrogen peroxide electrolysis production system through the rectifier power supply, the comprehensive energy consumption of the hydrogen peroxide electrolysis production system is reduced, and the loss and cost can be effectively reduced.

[0029] The above has made a detailed description of the present application, but some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the present application are within the scope of the present application.

Claims

1. A modular hydrogen peroxide electrolysis production plant comprising a body (1), characterized in that: The body (1) is characterized in that: the body (1) is fixedly connected with a roof (2), the body (1) is provided with a hydrogen peroxide electrolysis production device (3), the hydrogen peroxide electrolysis production device (3) mainly comprises an electric pile production module (130) and a BOP module (300), the electric pile production module (130) is composed of a plurality of electric piles (140), the BOP module (300) comprises: The bottom plate (31) is provided with a bottom plate (31), the bottom plate (31) is fixedly installed with an LCP cabinet (32), the bottom plate (31) is fixedly installed with an MCC cabinet (33), the bottom plate (31) is provided with a cathode circulating pump (34), the outlet of the cathode circulating pump (34) is fixedly connected with a cathode circulating pipeline (310), the cathode circulating pipeline (310) is fixedly connected with an electric pile (140), and the cathode oxygen inlet of the electric pile (140) is fixedly connected with an oxygen circulating pipeline (39); The oxygen circulating pipeline (39) is fixedly connected with an oxygen high-pressure tank (37), the cathode outlet of the electric pile (140) is fixedly connected with a cathode circulating tank (313), the outlet of the cathode circulating tank (313) is provided with a cathode liquid pump (321), and the bottom plate (31) is provided with an anode circulating pump (36); The anode circulating pump (36) is fixedly connected with an anode circulating pipeline (311), the anode circulating pipeline (311) is fixedly connected with an electric pile (140), the anode circulating pump (36) is provided with an anode circulating tank (314), the anode circulating tank (314) is fixedly connected with the anode circulating pump (36), the anode circulating tank (314) is provided with an anode liquid discharge port (315), the anode circulating tank (314) is provided with an anode liquid recovery port (316), the bottom plate (31) is provided with a liquid ring cooler (317), the bottom plate (31) is provided with an anode cooler (318), the bottom plate (31) is provided with a cathode filter (319), and the bottom plate (31) is provided with an anode filter (320).

2. The modular hydrogen peroxide electrolysis production apparatus according to claim 1, characterized in that: The BOP module (300) is also provided with a liquid ring compressor (38), the gas inlet of the liquid ring compressor (38) is connected with an oxygen low-pressure tank (35), the gas outlet of the liquid ring compressor (38) is connected with the oxygen high-pressure tank (37), and the cavity inside needs liquid, which is used for avoiding that sodium hydroxide liquid carried in oxygen becomes solid powder in the compressor due to high temperature and causes abrasion, and ensuring stable operation of the oxygen circulation system.

3. A modular hydrogen peroxide electrolysis production apparatus according to claim 2, characterized in that: The anode cooler (318) and the liquid ring cooler (317) are respectively connected with the anode circulation system and the oxygen circulation system through corresponding pipelines, which are used for controlling the temperature of the anode solution and the working liquid of the liquid ring compressor (38), and the cathode filter (319) and the anode filter (320) are respectively connected in the cathode circulation system and the anode circulation system through pipelines, which are used for filtering impurities in the cathode solution and the anode solution.

4. The modular hydrogen peroxide electrolysis production apparatus according to claim 1, characterized in that: The inlet of the anode circulating tank (314) is connected to the anode outlet of the stack (140), the outlet of the anode circulating tank (314) is connected to the inlet of the anode circulating pump (36), forming a circulating system of anode solution, maintaining the continuous progress of anode reaction, the anode circulating tank (314) is provided with a liquid discharge port, which is divided into two branches, one branch is connected to the anode liquid discharge port (315), and the other branch is connected to the anode liquid recovery port (316).

5. The modular hydrogen peroxide electrolysis production apparatus according to claim 2, characterized in that: The oxygen circulating pipeline (39) is connected to the cathode oxygen inlet of the stack (140), and the oxygen circulating pipeline (39) is connected to the outlet of the oxygen high-pressure tank (37). Oxygen generated on the anode side and excess oxygen on the cathode side enter the oxygen low-pressure tank (35), are pressurized by the liquid ring compressor (38) to enter the oxygen high-pressure tank (37), and are finally mixed with fresh oxygen and sent into the stack (140) cathode side through the oxygen circulating pipeline (39) to participate in the electrochemical reaction.

6. The modular hydrogen peroxide electrolysis production apparatus according to claim 1, wherein: The anode circulating pipeline (311) is connected to the outlet of the anode circulating pump (36) at one end and to the anode inlet of the stack (140) at the other end, so as to realize the function of the anode circulating pump (36) sending anode solution into the anode of the stack (140).

7. The modular hydrogen peroxide electrolysis production apparatus according to claim 1, wherein: The plurality of stack production modules (130) are connected to a BOP module (300).

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