CN215102002U - Circulating working liquid storage tank for producing hydrogen peroxide by anthraquinone process - Google Patents
Circulating working liquid storage tank for producing hydrogen peroxide by anthraquinone process Download PDFInfo
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- CN215102002U CN215102002U CN202121354908.4U CN202121354908U CN215102002U CN 215102002 U CN215102002 U CN 215102002U CN 202121354908 U CN202121354908 U CN 202121354908U CN 215102002 U CN215102002 U CN 215102002U
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Abstract
The utility model discloses a circulating working solution storage tank which can effectively avoid gas from flowing into subsequent equipment and avoid environmental pollution and is used for producing hydrogen peroxide by an anthraquinone process, comprising a vertical cylinder, a bottom plate welded at the bottom of the cylinder and a seal head welded at the top of the cylinder; the lower part of the cylinder body is provided with a working liquid feeding hole and a working liquid discharging hole, and the working liquid feeding hole and the working liquid discharging hole are coaxial and symmetrically arranged at two sides of the cylinder body; the inner side of the lower part of the cylinder is positioned at the working liquid feed inlet and is also provided with a guide plate; the middle part of the seal head is provided with a vent, the vent is provided with a breather valve, a gas outlet of the breather valve is provided with a self-operated regulating valve, and the self-operated regulating valve is communicated with a tail gas adsorption system; the sealing head is also provided with a manhole and a nitrogen inlet, and the nitrogen inlet is provided with a self-operated regulating valve; the seal head is also provided with a pressure gauge port, and the pressure gauge port is provided with a pressure gauge.
Description
Technical Field
The utility model relates to the technical field of chemical equipment, in particular to a circulating working solution storage tank for producing hydrogen peroxide by an anthraquinone process.
Background
The anthraquinone process of producing hydrogen peroxide is the main process for producing hydrogen peroxide industrially at present, and is to prepare working solution with 2-Ethyl Anthraquinone (EAQ) as working carrier and heavy arene (Ar) and tetrabutyl urea (TBU) or trioctyl phosphate (TOP) as solvent, and to obtain hydrogen peroxide product through the processes of hydrogenation, oxidation, extraction, post-treatment of the working solution, etc. The technological process of producing hydrogen peroxide by anthraquinone process includes pumping the working liquid in the circulating working liquid storage tank into the hydrogenation tower, and reacting with hydrogen in the presence of catalyst to produce hydrogenated liquid; then the hydrogenated liquid and the compressed air react in an oxidation tower to generate hydrogen peroxide, and the hydrogenated liquid is reduced into working liquid; then the mixture of the working solution and the hydrogen peroxide enters an extraction tower for separation, the hydrogen peroxide discharged from the lower part of the extraction tower enters a purification unit, the working solution discharged from the upper part of the extraction tower goes to a post-treatment regeneration process, and the regenerated working solution returns to a circulating working solution storage tank again, so that a cycle is completed, and continuous production is realized in cycles. The circulating working solution storage tank is a starting point and an end point of the working solution circulating process, and the circulating working solution storage tank is one of key devices of the hydrogen peroxide production process.
The traditional circulating working solution storage tank is characterized in that the working solution enters the storage tank through a pipeline inserted from the top to the bottom of the storage tank, and the top of the storage tank is provided with a vent so that part of air and volatile gas carried by the working solution enter the atmosphere, so that the storage tank structure has the following defects: firstly, part of gas carried by working fluid entering a storage tank cannot be separated out in time, cavitation erosion of a pump is easily caused when the working fluid enters a working fluid pump, flow fluctuation is large, operation is difficult to control, and certain potential safety hazard exists if air enters a hydrogenation tower; and secondly, the gas discharged from the top vent contains a certain amount of aromatic organic matter gas, so that the environment is polluted to a certain degree.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a circulation working solution storage tank for anthraquinone process production hydrogen peroxide solution, it can effectively avoid gaseous inflow sequent equipment, and avoids environmental pollution.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a circulating working solution storage tank for producing hydrogen peroxide by an anthraquinone process comprises a vertical cylinder, a bottom plate welded at the bottom of the cylinder and a seal head welded at the top of the cylinder; the lower part of the cylinder body is provided with a working liquid feeding hole and a working liquid discharging hole, and the working liquid feeding hole and the working liquid discharging hole are coaxial and symmetrically arranged at two sides of the cylinder body; the inner side of the lower part of the cylinder is positioned at the working liquid feed inlet and is also provided with a guide plate; the middle part of the seal head is provided with a vent, the vent is provided with a breather valve, a gas outlet of the breather valve is provided with a self-operated regulating valve, and the self-operated regulating valve is communicated with a tail gas adsorption system; the sealing head is also provided with a manhole and a nitrogen inlet, and the nitrogen inlet is provided with a self-operated regulating valve; the seal head is also provided with a pressure gauge port, and the pressure gauge port is provided with a pressure gauge.
Preferably, a stepped reinforcing plate is further arranged in the cylinder body and arranged on the side face of the guide plate.
Preferably, the height of the deflector is three fifths of the height of the cylinder.
Preferably, the baffle is arc-shaped.
Preferably, the working fluid feed port is inserted into the inner side of the cylinder body and is connected with a bent pipe with a downward pipe orifice.
Preferably, a reinforcing ring is arranged between the outer side of the cylinder and the working liquid feeding hole.
Preferably, a clean discharging opening is formed in the joint of the bottom of the cylinder body and the bottom plate.
Compared with the prior art, the beneficial effects of the utility model are that: the guide plate is arranged between the working liquid inlet and the working liquid outlet, after the working liquid enters from the inlet, the working liquid is fully separated from gas and liquid under the action of the guide plate and then flows out from the outlet, and the working liquid inlet and the working liquid outlet are coaxially designed, so that the gas-liquid separation time of the working liquid is prolonged, the separation is more sufficient, the gas is effectively prevented from flowing into subsequent equipment, the problem of pump cavitation is solved, the risk of bringing air into the hydrogenation tower is eliminated, the production safety is ensured while the normal production is ensured; in addition, the vent of the end socket is communicated with the tail gas adsorption system through the breather valve and the self-operated regulating valve, so that the breather valve and the self-operated regulating valve can prevent the liquid level in the cylinder from suddenly rising or falling to cause equipment deformation, the safety of the equipment is ensured, and meanwhile, the vented gas flows into the tail gas adsorption system, and the pollution of the discharged gas to the environment is avoided; the nitrogen inlet on the end socket is designed, and the added nitrogen seal meets the requirements of safety and environmental protection.
The method has the further beneficial effects that: the design of the stepped reinforcing plate arranged on the side surface of the guide plate can reinforce the guide plate layer by layer and ensure full gas-liquid separation; the arc-shaped guide plate design prolongs the gas-liquid separation time of the working liquid, and the separation is more sufficient; the working liquid feeding port is inserted into the inner side of the cylinder body and is connected with a bent pipe with a downward pipe orifice, and the working liquid flows out of the bent pipe and is separated by a guide plate, so that the inflow height of the working liquid is reduced, the gas is reduced, and the gas-liquid separation effect is improved; fourthly, the design of a reinforcing ring between the outer side of the cylinder and the working liquid feeding port can prevent the cylinder at the positions of the guide plate and the feeding port from deforming.
Drawings
FIG. 1 is a schematic structural diagram of a circulating working fluid storage tank for producing hydrogen peroxide by an anthraquinone process;
fig. 2 is a schematic view of the top view structure of the circulating working fluid storage tank for producing hydrogen peroxide by anthraquinone process.
Detailed Description
In order to make the technical solution of the present invention clearer, the following describes the present invention in detail with reference to fig. 1 and 2. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
The utility model relates to a circulating working solution storage tank for producing hydrogen peroxide by an anthraquinone process, which comprises a vertical cylinder 3, a bottom plate 16 welded at the bottom of the cylinder 3 and a seal head 4 welded at the top of the cylinder 3; a clean discharging opening 1 is formed in one side of the joint of the bottom of the cylinder 3 and the bottom plate 16; the lower part of the cylinder 3 is provided with a working liquid feed port 15 and a working liquid discharge port 2, the working liquid feed port 15 and the working liquid discharge port 2 are coaxial and are symmetrically arranged at two sides of the cylinder 3, and the working liquid feed port 15 and the working liquid discharge port 2 are coaxial, so that the gas-liquid separation time of the working liquid is prolonged, and the separation is more sufficient; the working liquid feed port 15 is inserted into the inner side of the cylinder 3 and is connected with a bent pipe with a downward pipe orifice; a guide plate 12 is arranged on the inner side of the lower part of the cylinder 3 and positioned at a working liquid feed inlet 15; the guide plate 12 takes the working solution feed port 15 as the center, the left and the right extend by 50cm respectively, and the height is 3/5 of the height of the whole cylinder 3; the guide plate 12 can also be provided with an arc shape; a stepped reinforcing plate 13 is further arranged in the cylinder 3, and the stepped reinforcing plate 13 is arranged on the side surface of the guide plate 12 and plays a role in reinforcing the guide plate 12; a reinforcing ring 14 is arranged between the outer side of the cylinder 3 and the working liquid feed port 15, so that the cylinder at the positions of the guide plate 12 and the working liquid feed port 15 can be prevented from deforming; the end socket 4 is connected with the top end of the cylinder 3 through welding; the middle part of the end socket 4 is provided with a vent 6, a breather valve 8 is arranged at the vent 6, a first self-operated regulating valve 7 is arranged at a gas outlet of the breather valve 8, and the first self-operated regulating valve 7 is communicated with a tail gas adsorption system (the tail gas adsorption system is the prior art and is not shown in the figure), so that the equipment deformation caused by sudden rising or falling of the liquid level in the cylinder can be avoided, and the safety of the equipment is ensured; the end socket 4 is also provided with a manhole 5 and a nitrogen inlet 11, the nitrogen inlet 11 is provided with a second self-operated regulating valve 10, and the requirement of safety and environmental protection can be met by adding nitrogen seal; still be equipped with the manometer mouth on the head 4, the manometer mouth is equipped with manometer 9.
The working liquid enters the guide plate 12 area in the cylinder 3 from the working liquid inlet 15, the gas phase and the liquid phase in the working liquid are fully separated when passing through the guide plate 12 area, the gas phase is discharged from the vent 6, and the liquid phase flows to the working liquid outlet 2, so that the problem of pump cavitation is solved, and the risk of bringing air into the hydrogenation tower is eliminated. The parameters of the breathing valve are-5 KPa-15 KPa, the rated opening pressures of the first self-operated regulating valve and the second self-operated regulating valve are respectively 1.5KPa and 1.8KPa, the regulating valve is automatically opened to regulate the pressure through the value of a pressure gauge, and the gas outlet is connected with a tail gas adsorption system, so that the safety of the equipment is ensured and the environmental protection requirement is met.
Claims (7)
1. A circulating working solution storage tank for producing hydrogen peroxide by an anthraquinone process is characterized in that: comprises a vertical cylinder (3), a bottom plate (16) welded at the bottom of the cylinder (3), and a seal head (4) welded at the top of the cylinder (3); the lower part of the cylinder body (3) is provided with a working liquid feeding hole (15) and a working liquid discharging hole (2), and the working liquid feeding hole (15) and the working liquid discharging hole (2) are coaxial and symmetrically arranged at two sides of the cylinder body (3); a guide plate (12) is arranged on the inner side of the lower part of the cylinder body (3) and positioned at the working liquid feeding hole (15); the middle part of the seal head (4) is provided with a vent hole (6), a breather valve (8) is arranged at the vent hole (6), a gas outlet of the breather valve (8) is provided with a self-operated regulating valve, and the self-operated regulating valve is communicated with a tail gas adsorption system; the seal head (4) is also provided with a manhole (5) and a nitrogen inlet (11), and the nitrogen inlet (11) is provided with a self-operated regulating valve; and a pressure gauge port is also arranged on the seal head (4), and a pressure gauge (9) is arranged at the pressure gauge port.
2. The circulating working solution storage tank for producing hydrogen peroxide by the anthraquinone process according to claim 1, which is characterized in that: a stepped reinforcing plate (13) is further arranged in the barrel (3), and the stepped reinforcing plate (13) is arranged on the side face of the guide plate (12).
3. The circulating working solution storage tank for producing hydrogen peroxide by the anthraquinone process according to claim 1, which is characterized in that: the height of the guide plate (12) is three fifths of the height of the cylinder (3).
4. The circulating working solution storage tank for producing hydrogen peroxide by the anthraquinone process according to claim 1, which is characterized in that: the guide plate (12) is arc-shaped.
5. The circulating working solution storage tank for producing hydrogen peroxide by the anthraquinone process according to claim 1, which is characterized in that: the working liquid feeding port (15) is inserted into the inner side of the cylinder body (3) and is connected with a bent pipe with a downward pipe orifice.
6. The circulating working solution storage tank for producing hydrogen peroxide by the anthraquinone process according to claim 1, which is characterized in that: and a reinforcing ring (14) is arranged between the outer side of the cylinder body (3) and the working liquid feeding hole (15).
7. The circulating working solution storage tank for producing hydrogen peroxide by the anthraquinone process according to claim 1, which is characterized in that: a clean discharging opening (1) is arranged at the joint of the bottom of the cylinder body (3) and the bottom plate (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121354908.4U CN215102002U (en) | 2021-06-17 | 2021-06-17 | Circulating working liquid storage tank for producing hydrogen peroxide by anthraquinone process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121354908.4U CN215102002U (en) | 2021-06-17 | 2021-06-17 | Circulating working liquid storage tank for producing hydrogen peroxide by anthraquinone process |
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| Publication Number | Publication Date |
|---|---|
| CN215102002U true CN215102002U (en) | 2021-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121354908.4U Active CN215102002U (en) | 2021-06-17 | 2021-06-17 | Circulating working liquid storage tank for producing hydrogen peroxide by anthraquinone process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215102002U (en) |
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2021
- 2021-06-17 CN CN202121354908.4U patent/CN215102002U/en active Active
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