CN217398676U - Hydrogen-making acidic water recycling device - Google Patents
Hydrogen-making acidic water recycling device Download PDFInfo
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- CN217398676U CN217398676U CN202221225197.5U CN202221225197U CN217398676U CN 217398676 U CN217398676 U CN 217398676U CN 202221225197 U CN202221225197 U CN 202221225197U CN 217398676 U CN217398676 U CN 217398676U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The utility model provides a hydrogen manufacturing acid water recycle device, include: a mixing tank, a membrane separator and an evaporation dryer; the mixing tank is connected with an acid water inlet pipeline and an alkali liquor inlet pipeline, and is also connected with a mixed liquor outlet pipeline; the inlet end of the membrane separator is connected with the mixed liquid outlet pipeline, and a concentration outlet pipeline is also arranged on the membrane separator; the inlet of the evaporation drier is communicated with the concentration outlet pipeline. The hydrogen production acid water recycling device of the utility model can contain higher CO 2 The acid water is neutralized and converted into sodium bicarbonate or sodium carbonate solution which can be directly taken as a product out of the device or can be prepared into sodium bicarbonate or sodium carbonate by membrane separationThe sodium carbonate crystal solves the problem of acid water emission of the hydrogen production device and reduces environmental CO 2 And (5) discharging.
Description
Technical Field
The utility model belongs to the petrochemical field, concretely relates to hydrogen manufacturing acid water recycle device.
Background
The method is characterized in that a hydrogen production device to which petroleum belongs is prolonged to start construction in 2013 and 2 months, the project in 2013 and 10 months is handed over, the device is a matching device of a diesel hydrogenation device and comprises a raw material compression and pressure increasing part, a raw material preheating and temperature increasing part, a raw material refining and hydrodesulfurization part, a water vapor conversion part, a shift reaction and heat recovery part, a steam production system part, a PSA purification part and the like, wherein the raw material refining part adopts ZnO for fine desulfurization to purify raw materials, the conversion part adopts a hydrocarbon-water vapor conversion method to produce hydrogen, and the product part adopts a PSA purification process to produce hydrogen. The hydrogen production capacity of the hydrogen production device is 2 ten thousand standard/hour, the raw materials are catalytic dry gas, hydrogenation dry gas and natural gas, the product is industrial hydrogen with the purity of more than 99.9 mol%, and the produced hydrogen is mainly supplied to the diesel hydrogenation device. The by-product acid water is stripped, the carbon dioxide-containing gas, steam and raw material gas are fed into the conversion furnace again to make reaction, and the CO which is not dissolved in the water is fed into the conversion furnace 2 Finally, the mixture is subjected to PAS pressure swing adsorption and desorption and hydrogen fuel gas to serve as reformer fuel, and then the reformer fuel is discharged into the atmosphere. The method finally produces a large amount of acid water and simultaneously has higher CO 2 And (5) discharging.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hydrogen manufacturing acid water recycle device for overcome above-mentioned problem or solve or alleviate above-mentioned problem at least partially.
The utility model provides a hydrogen manufacturing acid water recycle device, include:
the mixing tank is connected with an acid water inlet pipeline and an alkali liquor inlet pipeline, and is also connected with a mixed liquid outlet pipeline;
the inlet end of the membrane separator is connected with the mixed liquid outlet pipeline, and a concentration outlet pipeline is also arranged on the membrane separator;
and the inlet of the evaporation dryer is communicated with the concentration outlet pipeline.
The hydrogen production acid water recycling device of the utility model also has the following optional characteristics.
Optionally, a water return pipeline is further arranged on the membrane separator, and the water return pipeline is communicated with the mixing tank.
Optionally, the membrane separator is further provided with a fresh water inlet pipeline.
Optionally, the mixed liquid outlet pipeline is connected with a first circulating pump.
Optionally, the membrane separator further comprises a cache tank, a concentration cache pipeline is further arranged on the membrane separator, an inlet of the cache tank is connected with the concentration cache pipeline, and an outlet of the cache tank is communicated with the evaporation dryer through a pipeline.
Optionally, a second circulation pump is further disposed on a pipeline between the buffer tank and the evaporation dryer.
The hydrogen production acid water recycling device of the utility model can contain higher CO 2 The acid water is neutralized and converted into sodium bicarbonate or sodium carbonate solution, the solution can be directly taken as a product to be discharged from the device, and can also be prepared into sodium bicarbonate or sodium carbonate crystals by membrane separation, thereby solving the problem of acid water discharge of a hydrogen production device and reducing environmental CO 2 And (5) discharging.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the hydrogen production acidic water recycling device of the present invention.
In the above figures: 1, a mixing tank; 2 an acid water inlet pipeline; 3 an alkali liquor inlet pipeline; 4, a mixed liquid outlet pipeline; 5, a membrane separator; 6 a concentration outlet pipeline; 7, an evaporation dryer; 8, a water return pipeline; 9, introducing fresh water into a pipeline; 10 a first circulation pump; 11 a buffer tank; 12 a concentration cache pipeline; 13 a second circulation pump; and 14 a water return bypass.
Detailed Description
Example 1
Referring to fig. 1, an embodiment of the present invention provides a hydrogen production acid water recycling apparatus, including: a mixing tank 1, a membrane separator 5 and an evaporation dryer 7; the mixing tank 1 is connected with an acid water inlet pipeline 2 and an alkali liquor inlet pipeline 3, and the mixing tank 1 is also connected with a mixed liquor outlet pipeline 4; the inlet end of the membrane separator 5 is connected with the mixed liquid outlet pipeline 4, and the membrane separator 5 is also provided with a concentrated outlet pipeline 6; the inlet of the evaporation dryer 7 is communicated with the concentration outlet pipeline 6.
The hydrogen production device produces high-content CO 2 The acidic water is introduced into a mixing tank 1 through an acidic water inlet pipeline 2, a sodium hydroxide solution is introduced through an alkali liquor inlet pipeline 3, an acid-base corrosion prevention stirring impeller is arranged in the mixing tank 1, the sodium hydroxide solution is stirred by the acid-base corrosion prevention stirring impeller to be neutralized with the acidic water, and a PH detector is arranged on the wall of the mixing tank 1 and used for controlling and adjusting the PH in the device; the pH parameter is adjusted to control the generation of sodium bicarbonate or sodium carbonate solution, and the solution can be directly taken as a product out of the device. The reaction formula is as follows:
H + +HCO 3 - +NaOH＝NaHCO 3 +H 2 O
2H + +CO 3 2- +NaOH＝NaCO 3 +2H 2 O
the sodium bicarbonate or sodium carbonate solution is injected from the top of the membrane separator 5 through the mixed solution outlet pipeline 4, the upper layer of the filtering membrane in the membrane separator 5 is the sodium bicarbonate or sodium carbonate solution with higher concentration, the mixed solution outlet pipeline 4 connected with the upper side area of the filtering membrane in the membrane separator 5 is communicated with the evaporation dryer 7, and the high-concentration sodium bicarbonate or sodium carbonate solution separated by the membrane separator 5 can be introduced into the evaporation dryer 7 to be prepared into sodium bicarbonate or sodium carbonate crystals.
Example 2
Referring to fig. 1, in addition to embodiment 1, a water return line 8 is further provided on the membrane separator 5, and the water return line 8 leads back to the mixing tank 1.
The lower area of the filtration membrane in the membrane separator 5 is connected to a return pipe 8, the return pipe 8 is connected to the mixing tank 1, and if the membrane fails, the water separated by the filtration membrane in the membrane separator 5 that flows out can be returned to the mixing tank 1, or can be discharged to another place through a return water bypass 14 on the return pipe 8.
Example 3
Referring to fig. 1, on the basis of embodiment 1, a fresh water inlet line 9 is also provided on the membrane separator 5.
The membrane separator 5 can also be purged from the concentrate outlet line 6 by fresh water via fresh water inlet line 9.
Example 4
Referring to fig. 1, in example 1, a first circulation pump 10 is connected to the mixed liquid outlet pipe 4.
The first circulating pump 10 on the mixed liquid outlet pipe 4 can pump the mixed liquid in the mixing tank 1 to the membrane separator 5.
Example 5
Referring to fig. 1, on the basis of embodiment 1, the membrane separator further includes a buffer tank 11, the membrane separator 5 is further provided with a concentration buffer pipeline 12, an inlet of the buffer tank 11 is connected to the concentration buffer pipeline 12, and an outlet of the buffer tank 11 is communicated to the evaporation dryer 7 through a pipeline.
Sodium bicarbonate or sodium carbonate solution is introduced into the evaporation dryer 7 and then is evaporated by steam tracing to obtain sodium bicarbonate or sodium carbonate crystals, and since only a certain amount of high-concentration sodium bicarbonate or sodium carbonate solution can be introduced into the evaporation dryer 7 each time, the concentration buffer tank 11 is provided for temporarily storing the sodium bicarbonate or sodium carbonate solution.
Example 6
Referring to fig. 1, on the basis of embodiment 5, a second circulation pump 13 is further disposed on a pipeline between the buffer tank 11 and the evaporation dryer 7.
The second circulation pump 13 may pass the high concentration sodium bicarbonate or sodium carbonate solution stored in the buffer tank 11 into the evaporation dryer 7.
Example 7
The hydrogen production acid water recycling device of the utility model comprises the following steps: firstly, introducing acidic water containing carbonate and bicarbonate radical into a mixing tank 1, simultaneously introducing alkaline liquor containing hydroxyl radical into the mixing tank 1, and stirring and neutralizing to generate a carbonate solution and a bicarbonate solution; secondly, feeding the carbonate and bicarbonate solution into a membrane separator 5 for membrane separation to obtain concentrated carbonate and bicarbonate solution; and thirdly, feeding the concentrated carbonate and bicarbonate solution into an evaporation drying device 7 to obtain carbonate and bicarbonate crystals.
The hydrogen-producing acidic water mainly comprises the following components: CO, CO 2 、CH 4 、N 2 、H 2 O, wherein CO 2 (wt%) content about: 11 percent, the flow rate of the acid water inlet device is 14t/h, the temperature is 70 ℃, the alkali liquor is fed by 30 percent NaOH solution at normal temperature, the feeding amount is about 3.5t/h, the temperature after mixing is about 60 ℃, the mixture is discharged after being mixed in a mixing tower for about 20 minutes, the discharge amount is controlled at 17.5t/h, the mixture is separated by a membrane separator, wherein the separation rate of the membrane is 98 percent, and the filtering concentration can be carried out for multiple times to obtain about 30 percent NaCO at 40 DEG C 3 Concentrated solution, NaCO 3 The concentrated solution enters a dryer heated by steam, and a stirrer is arranged in the dryer to prevent NaCO 3 Agglomerating, stirring with a stirrer, and adding NaCO into a dryer 3 Evaporating the concentrated solution to obtain NaCO 3 The crystal powder can be packaged in woven bag with moisture-proof lining.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.
Claims (6)
1. The hydrogen production acid water recycling device is characterized by comprising:
the device comprises a mixing tank (1), wherein the mixing tank (1) is connected with an acidic water inlet pipeline (2) and an alkaline liquid inlet pipeline (3), and the mixing tank (1) is also connected with a mixed liquid outlet pipeline (4);
the inlet end of the membrane separator (5) is connected with the mixed liquid outlet pipeline (4), and the membrane separator (5) is also provided with a concentration outlet pipeline (6);
an inlet of the evaporation drier (7) is communicated with the concentration outlet pipeline (6).
2. The hydrogen-producing acidic water recycling device according to claim 1, wherein the membrane separator (5) is further provided with a water return pipeline (8), and the water return pipeline (8) is communicated back to the mixing tank (1).
3. The hydrogen-producing acidic water recycling device according to claim 1, characterized in that the membrane separator (5) is further provided with a fresh water inlet pipeline (9).
4. The hydrogen-producing acidic water recycling device according to claim 1, wherein the mixed liquid outlet pipeline (4) is connected with a first circulating pump (10).
5. The hydrogen-producing acidic water recycling device according to claim 1, further comprising a buffer tank (11), wherein a concentration buffer pipeline (12) is further disposed on the membrane separator (5), an inlet of the buffer tank (11) is connected to the concentration buffer pipeline (12), and an outlet of the buffer tank (11) is communicated to the evaporation dryer (7) through a pipeline.
6. The hydrogen-producing acidic water recycling device according to claim 5, characterized in that a second circulating pump (13) is further arranged on a pipeline between the buffer tank (11) and the evaporation dryer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221225197.5U CN217398676U (en) | 2022-05-19 | 2022-05-19 | Hydrogen-making acidic water recycling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221225197.5U CN217398676U (en) | 2022-05-19 | 2022-05-19 | Hydrogen-making acidic water recycling device |
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| Publication Number | Publication Date |
|---|---|
| CN217398676U true CN217398676U (en) | 2022-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221225197.5U Active CN217398676U (en) | 2022-05-19 | 2022-05-19 | Hydrogen-making acidic water recycling device |
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| CN (1) | CN217398676U (en) |
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2022
- 2022-05-19 CN CN202221225197.5U patent/CN217398676U/en active Active
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