CN221015994U - Complete equipment for preparing formic acid by photocatalysis of CO2 - Google Patents
Complete equipment for preparing formic acid by photocatalysis of CO2 Download PDFInfo
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- CN221015994U CN221015994U CN202322550770.0U CN202322550770U CN221015994U CN 221015994 U CN221015994 U CN 221015994U CN 202322550770 U CN202322550770 U CN 202322550770U CN 221015994 U CN221015994 U CN 221015994U
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- formic acid
- reactor
- raw material
- heat exchanger
- photocatalytic
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- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 title claims abstract description 162
- 235000019253 formic acid Nutrition 0.000 title claims abstract description 82
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 19
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 6
- 239000007789 gas Substances 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000011084 recovery Methods 0.000 claims abstract description 24
- 239000002918 waste heat Substances 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 28
- 239000001569 carbon dioxide Substances 0.000 claims description 14
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 14
- 239000003054 catalyst Substances 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 239000011941 photocatalyst Substances 0.000 claims description 8
- 238000001704 evaporation Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 13
- 239000002440 industrial waste Substances 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 3
- 238000007036 catalytic synthesis reaction Methods 0.000 abstract description 2
- 239000007864 aqueous solution Substances 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000012827 research and development Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- HQVFCQRVQFYGRJ-UHFFFAOYSA-N formic acid;hydrate Chemical compound O.OC=O HQVFCQRVQFYGRJ-UHFFFAOYSA-N 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000007540 photo-reduction reaction Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- -1 steam Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Physical Or Chemical Processes And Apparatus (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model provides complete equipment for preparing formic acid by photocatalysis CO 2, and belongs to the technical field of catalytic synthesis. In order to solve the problems of how to effectively utilize industrial tail gas to prepare industrial pure formic acid and improve the conversion rate of the industrial pure formic acid. The waste heat recovery heat exchanger is provided with an industrial tail gas input end, the waste heat recovery heat exchanger is provided with a water input end, the waste heat recovery heat exchanger is communicated with the raw material premixer, the raw material premixer is connected with at least one reactor, the output end of the reactor is connected with the formic acid condenser, the formic acid condenser is provided with a cooling circulating water input end, and the formic acid condenser is communicated with the reactor connected with the raw material premixer. The method has the advantages of high conversion rate, clean energy, easy separation of products, direct acquisition of industrial pure formic acid, and the use of industrial waste gas to prepare the formic acid, so that the aim of clean production can be achieved, the tail gas treatment is realized, the method is more environment-friendly, and the production cost can be reduced.
Description
Technical Field
The utility model relates to the technical field of catalytic synthesis, in particular to complete equipment for preparing formic acid by photocatalytic CO 2.
Background
Today, the utilization of China CO 2 is in an initial stage, and the urgent requirement of future low-carbon development is hardly met. Under the background of double carbon, the implementation of CO 2 resource utilization not only can realize carbon emission reduction, but also can synthesize various industrial products, brings certain economic benefit and has good prospect in the aspect of controlling CO 2 emission in the future. Many studies are currently still at the laboratory stage and lack practical application studies. In the last twenty years, the research and development of the chemical conversion of carbon dioxide are rapid, and the emergence of novel functional materials such as nano materials, ionic liquids and the like provides a new development opportunity for the recycling of carbon dioxide. Researchers have struggled to catalytically convert CO 2 to valuable fuels, reduced products such as CO, HCOOH, CH 3 OH and C 2H5 OH.
The technology research and development and project construction supporting the utilization of CO 2 resources are focused on increasing the investment of the technology research and development to promote the development and utilization of new technologies, strengthening the cooperation of enterprises and research and development departments to promote the conversion of technical achievements, paying attention to market trends to promote the economy of industrial achievements and the like, and the aims of realizing clean production process, industrialization of production technology and the like of the utilization of CO 2 resources are fulfilled. With the continued development of new technologies, the ultimate goal will be to achieve sustainable green development that is environmentally friendly. Particularly for industrial tail gas, how to effectively improve the conversion rate to prepare the formic acid with industrial purity becomes a hot spot of current research.
Disclosure of utility model
The utility model aims to solve the technical problems that:
In order to solve the problems of how to effectively utilize industrial tail gas to prepare industrial pure formic acid and improve the conversion rate of the industrial pure formic acid.
The utility model adopts the technical scheme for solving the technical problems:
the utility model provides complete equipment for preparing formic acid by photocatalysis CO 2, which comprises a waste heat recovery heat exchanger, a raw material premixer, at least one reactor and a formic acid condenser,
The waste heat recovery heat exchanger is provided with an industrial tail gas input end for inputting high-temperature industrial tail gas, the waste heat recovery heat exchanger is provided with a water input end for evaporating water into water vapor through the high-temperature industrial tail gas, the waste heat recovery heat exchanger is communicated with the raw material premixer and used for premixing the cooled industrial tail gas, the water vapor and the carbon dioxide through the waste heat recovery heat exchanger, the raw material premixer is connected with at least one reactor, the output end of the reactor is connected with a formic acid condenser, the formic acid condenser is provided with a cooling circulating water input end, and the formic acid condenser is communicated with the reactor connected with the raw material premixer.
Further, when the number of reactors is one, the reactors for connection with the formic acid condenser and the raw material premixer are the same reactor.
Further, when the number of reactors is greater than or equal to two, at least two reactors are connected in series in order.
Further, the number of the reactors is three, the reactors comprise a first-stage reactor, a second-stage reactor and a third-stage reactor which are sequentially connected in series, the first-stage reactor is respectively connected with the raw material premixer and the formic acid condenser, and the third-stage reactor is connected with the formic acid condenser.
Further, the reactor comprises a tank-shaped reactor main body, a detachable reactor cover is arranged on the reactor main body, a catalyst adhesion belt is arranged in the reactor main body, a photocatalyst is arranged on the catalyst adhesion belt, and a light source is arranged at the center of the lower end face of the reactor cover.
Further, the catalyst attachment belt may be adhered to the inner wall of the reactor body.
Further, the light source is a tubular light source and the light source extends above the bottom of the reactor body.
Further, the catalyst adhesion belt is enclosed on the outside of the light source, and the photocatalyst is disposed on the side facing the light source.
Further, the input end of the reactor is arranged on the reactor cover, and the output end of the reactor is arranged at the bottom of the reactor main body.
Further, the waste heat recovery heat exchanger, the raw material premixer, the at least one reactor and the formic acid condenser are all provided with flow regulating valves.
Compared with the prior art, the utility model has the beneficial effects that:
According to the complete equipment for preparing formic acid by photocatalysis CO 2, high-temperature industrial waste gas is collected through a waste heat recovery heat exchanger to evaporate water into water vapor, the industrial waste gas can be high-temperature waste gas which is heated and output, the industrial waste gas can also be high-temperature waste gas which is generated in the preparation process of a factory, the industrial waste gas, the water vapor and input carbon dioxide react through at least one stage of reactor to finally generate formic acid vapor and residual carbon dioxide, the temperature of the formic acid vapor is regulated to be reduced to room temperature in a formic acid condenser, formic acid is condensed into formic acid liquid at room temperature, the carbon dioxide does not reach a condensation point, the formic acid liquid can be input into the first stage of reactor again for continuous reaction, the carbon dioxide and cooling circulating water are mixed to form formic acid aqueous solution, and the concentration of the formic acid aqueous solution can be regulated by regulating the input amount of the cooling circulating water;
The complete equipment for preparing the formic acid by the photocatalytic CO 2 has the advantages of high conversion rate, clean energy, easy separation of products and capability of directly obtaining the industrial pure formic acid, and the industrial waste gas is used for preparing the formic acid, so that the aim of clean production can be achieved, the tail gas treatment is realized, the environment is protected, and the production cost can be reduced.
Drawings
FIG. 1is a block diagram of a plant for producing formic acid by photocatalytic CO 2 in an embodiment of the present utility model;
FIG. 2 is a block diagram of a reactor in an embodiment of the utility model;
FIG. 3 is a diagram showing the reaction process in the reactor in the example of the present utility model.
Reference numerals illustrate:
1. A waste heat recovery heat exchanger; 2. an industrial tail gas input; 3. a water input; 4. a raw material premixer; 5. a reactor; 6. a formic acid condenser; 7. a formic acid aqueous solution output end; 8. a cooling circulating water input end; 501. a reactor cover; 502. a catalyst-attaching belt; 503. a light source; 504. a reactor body.
In FIG. 3, CB means conduction band, VB means valence band, potential means intensity, hv means light, band gap 2.2 electron volts (theory), band gap 2.1eV (Theoretical) means band gap 2.1 electron volts (theory), experimental means test, cluster means calculation, e - means negative electron, V means volt, and other letters are chemical formulas.
Detailed Description
In the description of the present utility model, it should be noted that terms such as "upper", "lower", "front", "rear", "left", "right", and the like in the embodiments indicate terms of orientation, and only for simplifying the description based on the positional relationship of the drawings in the specification, do not represent that the elements and devices and the like referred to must be operated according to the specific orientation and the defined operations and methods, configurations in the specification, and such orientation terms do not constitute limitations of the present utility model.
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
The specific embodiment I is as follows: referring to fig. 1 to 3, the utility model provides a complete equipment for preparing formic acid by using photocatalytic CO 2, which comprises a waste heat recovery heat exchanger 1, a raw material premixer 4, at least one reactor 5 and a formic acid condenser 6, wherein the waste heat recovery heat exchanger 1 is provided with an industrial tail gas input end 2 for inputting high-temperature industrial tail gas, the waste heat recovery heat exchanger 1 is provided with a water input end 3 for evaporating water into water vapor through the high-temperature industrial tail gas, the waste heat recovery heat exchanger 1 is communicated with the raw material premixer 4 and is used for premixing the cooled industrial tail gas, the water vapor and the carbon dioxide through the waste heat recovery heat exchanger 1, the raw material premixer 4 is connected with the at least one reactor 5, when the number of the reactors 5 is greater than or equal to two, the reactors 5 are sequentially connected in series, the output end of the last reactor 5 is connected with the formic acid 6, the output end of the formic acid condenser 6 is provided with a cooling circulating water input end 8, the formic acid 6 is provided with a formic acid water solution output end 7, and when the number of the first reactor 5 is equal to the first reactor 5, and the last reactor is communicated with the first reactor 5.
The waste heat recovery heat exchanger 1 is used for collecting high-temperature industrial waste gas to evaporate water into steam, the industrial waste gas can be high-temperature waste gas generated in the preparation process of a factory, the industrial waste gas, the steam and the input carbon dioxide react through the at least one stage of reactor 5 to finally generate formic acid steam and residual carbon dioxide, the temperature of the formic acid steam is regulated to be reduced to room temperature in the formic acid condenser 6, formic acid is condensed into formic acid liquid when the temperature of the formic acid is not up to a condensation point, the formic acid can be input into the first stage of reactor again for continuous reaction, the carbon dioxide is mixed with cooling circulating water to form formic acid aqueous solution, the concentration of the formic acid aqueous solution can be regulated by regulating the input amount of the cooling circulating water, the device has the advantages of high conversion rate, clean energy source and easy separation of products, and can directly obtain industrial pure formic acid (70 percent), the industrial waste gas is used for preparing formic acid, the aim of clean production can be achieved, the tail gas treatment is realized, the environment-friendly effect is better, and the production cost can be reduced.
Preferably, the reactor 5 includes a tank-shaped reactor body 504, a detachable reactor cover 501 is provided on the reactor body 504, a spiral catalyst attachment belt 502 is provided in the reactor body 504, a photocatalyst is provided on the catalyst attachment belt 502, the photocatalyst is a photocatalyst commonly used in the prior art for preparing formic acid, and a light source 503 is provided at the center of the lower end face of the reactor cover 501. In reactor 5, the electron-hole is generated by the illumination of light source 503, which oxidizes water to generate oxygen and electrons, which reduce Zr 4+ to Zr 3+, which also aids in the oxidation of water to oxygen. Zr 3+ can be seen in EPR to be present during the photo-reduction process, after which Zr 3+ reduces CO 2 to HCOOH, oxidizing itself to Zr 4 +, completing a catalytic cycle.
Preferably, the catalyst attachment strip 502 may be adhered to the inner wall of the reactor body 504 to facilitate the securement of the catalyst attachment strip 502.
Preferably, the light source 503 is a tubular light source, the light source 503 extends to above the bottom of the reactor body 504, the catalyst adhesion belt 502 surrounds the outside of the light source 503, and the photocatalyst is disposed at a side facing the light source 503, so that the reaction efficiency can be effectively improved.
Preferably, the number of the reactors 5 is three, and the reactors comprise a first-stage reactor, a second-stage reactor and a third-stage reactor which are sequentially connected in series, wherein the first-stage reactor is respectively connected with the raw material premixer 4 and the formic acid condenser 6, and the third-stage reactor is connected with the formic acid condenser 6.
Preferably, the input end of the reactor 5 is provided on the reactor cover 501, and the output end of the reactor 5 is provided at the bottom of the reactor body 504, so as to facilitate a sufficient reaction and output of formic acid and carbon dioxide more than the weight of air.
Preferably, the waste heat recovery heat exchanger 1, the raw material premixer 4, the at least one reactor 5 and the formic acid condenser 6 are provided with flow regulating valves for regulating the flow of water, steam, carbon dioxide, formic acid steam, formic acid solution or formic acid aqueous solution.
Although the present disclosure is disclosed above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and such changes and modifications would be within the scope of the disclosure.
Claims (10)
1. Complete equipment for preparing formic acid by photocatalysis CO 2 is characterized in that: comprises a waste heat recovery heat exchanger (1), a raw material premixing device (4), at least one reactor (5) and a formic acid condenser (6),
The waste heat recovery heat exchanger (1) is provided with an industrial tail gas input end (2) for inputting high-temperature industrial tail gas, the waste heat recovery heat exchanger (1) is provided with a water input end (3) for evaporating water into water vapor through the high-temperature industrial tail gas, the waste heat recovery heat exchanger (1) is communicated with the raw material premixing device (4) and is used for premixing the cooled industrial tail gas, the water vapor and the carbon dioxide through the waste heat recovery heat exchanger (1), the raw material premixing device (4) is connected with at least one reactor (5), the output end of the reactor (5) is connected with a formic acid condenser (6), the formic acid condenser (6) is provided with a cooling circulating water input end (8), and the formic acid condenser (6) is communicated with the reactor (5) connected with the raw material premixing device (4).
2. The plant for the photocatalytic CO 2 to formic acid according to claim 1, characterized in that: when the number of the reactors (5) is one, the reactors (5) for connecting the formic acid condenser (6) and the raw material premixer (4) are the same reactor (5).
3. The plant for the photocatalytic CO 2 to formic acid according to claim 1, characterized in that: when the number of the reactors (5) is greater than or equal to two, at least two reactors (5) are connected in series in sequence.
4. A plant for the photocatalytic CO 2 production of formic acid according to claim 3, characterized in that: the number of the reactors (5) is three, the reactors comprise a first-stage reactor, a second-stage reactor and a third-stage reactor which are sequentially connected in series, the first-stage reactor is respectively connected with the raw material premixer (4) and the formic acid condenser (6), and the third-stage reactor is connected with the formic acid condenser (6).
5. The plant for producing formic acid by photocatalytic CO 2 as set forth in claim 4, wherein: the reactor (5) comprises a tank-shaped reactor main body (504), a detachable reactor cover (501) is arranged on the reactor main body (504), a catalyst adhesion belt (502) is arranged in the reactor main body (504), a photocatalyst is arranged on the catalyst adhesion belt (502), and a light source (503) is arranged at the center of the lower end face of the reactor cover (501).
6. The plant for producing formic acid by photocatalytic CO 2 as set forth in claim 5, wherein: the catalyst attachment strip (502) may be adhered to the inner wall of the reactor body (504).
7. The plant for producing formic acid by photocatalytic CO 2 as set forth in claim 6, wherein: the light source (503) is a tubular light source, and the light source (503) extends above the bottom of the reactor body (504).
8. The plant for the photocatalytic CO 2 to formic acid as set forth in claim 7, wherein: the catalyst adhesion belt (502) surrounds the outside of the light source (503), and the photocatalyst is disposed on the side facing the light source (503).
9. The plant for the photocatalytic CO 2 to formic acid according to claim 8, characterized in that: the input end of the reactor (5) is arranged on a reactor cover (501), and the output end of the reactor (5) is arranged at the bottom of a reactor main body (504).
10. The plant for the photocatalytic CO 2 to formic acid according to claim 9, characterized in that: the waste heat recovery heat exchanger (1), the raw material premixer (4), the at least one reactor (5) and the formic acid condenser (6) are all provided with flow regulating valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322550770.0U CN221015994U (en) | 2023-09-19 | 2023-09-19 | Complete equipment for preparing formic acid by photocatalysis of CO2 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322550770.0U CN221015994U (en) | 2023-09-19 | 2023-09-19 | Complete equipment for preparing formic acid by photocatalysis of CO2 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221015994U true CN221015994U (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322550770.0U Active CN221015994U (en) | 2023-09-19 | 2023-09-19 | Complete equipment for preparing formic acid by photocatalysis of CO2 |
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| Country | Link |
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| CN (1) | CN221015994U (en) |
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2023
- 2023-09-19 CN CN202322550770.0U patent/CN221015994U/en active Active
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