CN220071645U - HCFC-22 production equipment - Google Patents
HCFC-22 production equipment Download PDFInfo
- Publication number
- CN220071645U CN220071645U CN202321596029.1U CN202321596029U CN220071645U CN 220071645 U CN220071645 U CN 220071645U CN 202321596029 U CN202321596029 U CN 202321596029U CN 220071645 U CN220071645 U CN 220071645U
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- Prior art keywords
- pipe
- preheater
- chloroform
- hydrogen fluoride
- anhydrous hydrogen
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- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims abstract description 104
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 51
- 229910000040 hydrogen fluoride Inorganic materials 0.000 claims abstract description 51
- 238000010992 reflux Methods 0.000 claims abstract description 31
- 238000002156 mixing Methods 0.000 claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims description 35
- 239000007789 gas Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004334 fluoridation Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000002994 raw material Substances 0.000 description 4
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- VMPVEPPRYRXYNP-UHFFFAOYSA-I antimony(5+);pentachloride Chemical compound Cl[Sb](Cl)(Cl)(Cl)Cl VMPVEPPRYRXYNP-UHFFFAOYSA-I 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model provides HCFC-22 production equipment, which comprises a chloroform preheater, an anhydrous hydrogen fluoride preheater, a reflux tower cooling system and an HCFC-22 reactor, wherein the HCFC-22 reactor comprises a cylinder body and a mixing device, the mixing device is positioned in the cylinder body, the upper end of the mixing device is provided with a reflux pipe, and the upper end of the reflux pipe penetrates out of the upper end of the cylinder body and is connected with the lower end of the reflux tower cooling system; the left side and the right side of the return pipe are respectively provided with a feed pipe a and a feed pipe b which are communicated with the chloroform preheater and the anhydrous hydrogen fluoride preheater; the cylinder is provided with an air outlet pipe which is communicated with a reflux tower cooling system. The utility model has the beneficial effects that: through adding mixing device and back flow in the reactor, form and flow by mixing device internal and external convection, just so formed the internal and external convection flow, make the intensive mixing of material in the whole reactor to the feeding preheats in advance, has solved the inhomogeneous problem that produces too much R23 of fluoridation.
Description
Technical Field
The utility model relates to the field of chemical equipment, in particular to novel efficient reaction equipment for producing HCFC-22.
Background
In the HCFC-22 production process, chloroform and anhydrous hydrogen fluoride are adopted to carry out fluorination reaction in a reactor under the catalysis of a catalyst (antimony pentachloride), and the traditional reactor is jacketed without other auxiliary facilities, and is only mixed and stirred by heating and impact force generated by the impact of raw materials entering the reactor. For example, the patent can be applied to a production device with the production capacity of 2 ten thousand tons/year, but if the production capacity is enlarged, such as that of a device with the capacity of 8 ten thousand tons/year, two reactors are maintained, the reactors are enlarged, the traditional reactors are unsuitable, raw materials added into the reactors are unevenly reacted due to uneven mixing and heating, the content of R23 in the reaction material gas is generally increased, and the material consumption is increased, and the environmental protection effect is increased.
Accordingly, there is a need to design an apparatus for HCFC-22 production to overcome the above-described problems.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides HCFC-22 production equipment, which improves the reaction efficiency of HCFC-22 and the annual output upper limit.
The device comprises a chloroform preheater, an anhydrous hydrogen fluoride preheater, a reflux tower cooling system and an HCFC-22 reactor, wherein the HCFC-22 reactor comprises a cylinder body and a mixing device, the mixing device is positioned in the cylinder body, a reflux pipe is arranged at the upper end of the mixing device, the lower end of the reflux pipe is connected with the mixing device, and the upper end of the reflux pipe penetrates out of the upper end of the cylinder body and is connected with the lower end of the reflux tower cooling system; the left side and the right side of the return pipe are respectively provided with a feed pipe a and a feed pipe b which are communicated with the chloroform preheater and the anhydrous hydrogen fluoride preheater; the cylinder is provided with an air outlet pipe which is communicated with a reflux tower cooling system.
Further, the feed pipe a is communicated with the chloroform preheater through a first branch pipe of a discharge pipe of the chloroform preheater, and a flow restrictor a of the chloroform feed pipe is arranged on the first branch pipe of the discharge pipe of the chloroform preheater; the feeding pipe a is communicated with the anhydrous hydrogen fluoride preheater through a first branch pipe of a discharging pipe of the anhydrous hydrogen fluoride preheater, and a flow restrictor a of the anhydrous hydrogen fluoride feeding pipe is arranged on the first branch pipe of the discharging pipe of the anhydrous hydrogen fluoride preheater.
Further, the feeding pipe b is communicated with the chloroform preheater through a second branch pipe of a discharging pipe of the chloroform preheater, and a chloroform feeding pipe restrictor b is arranged on the second branch pipe of the discharging pipe of the chloroform preheater; the feed pipe b is communicated with the anhydrous hydrogen fluoride preheater through a second branch pipe of the discharge pipe of the anhydrous hydrogen fluoride preheater, and a flow restrictor b of the anhydrous hydrogen fluoride feed pipe is arranged on the second branch pipe of the discharge pipe of the anhydrous hydrogen fluoride preheater.
Further, the chloroform preheater is provided with a chloroform feed pipe, and the anhydrous hydrogen fluoride preheater is provided with an anhydrous hydrogen fluoride feed pipe and a chlorine gas supplementing pipe.
Further, a first heating jacket is arranged on the outer side of the cylinder body, and a first steam inlet pipe a for entering heating steam, a first steam inlet pipe b and a first steam outlet pipe for discharging steam condensate are arranged on the first heating jacket.
Further, a second heating jacket is arranged on the outer side of the chloroform preheater, a second steam inlet pipe and a second steam outlet pipe are arranged on the second heating jacket, and the second steam outlet pipe is connected with the first steam inlet pipe b.
Further, a third heating jacket is arranged on the outer side of the anhydrous hydrogen fluoride preheater, a third steam inlet pipe and a third steam outlet pipe are arranged on the third heating jacket, and the third steam outlet pipe is connected with the first steam inlet pipe b.
Further, a process gas outlet pipe is arranged at the upper end of the reflux tower cooling system.
As a preferable scheme, the feeding pipe a and the feeding pipe b are symmetrically arranged at the upper end of the cylinder.
As a preferred solution, the return tube is arranged centrally in the upper end of the cylinder.
The utility model has the beneficial effects that:
(1) According to the utility model, the mixing device and the return pipe are arranged in the middle of the reactor to form the outward convection flow from the inside to the outside of the mixing device, so that the internal and external convection flow is formed, the materials in the whole reactor are fully mixed to achieve uniform heating, and the feeding adopts advance preheating, thereby solving the problem that excessive R23 is generated due to insufficient contact and uneven heating of raw materials entering the reactor and the catalyst in the reaction caused by the expansion of the productivity and the expansion of the diameter of the reactor.
(2) The two feeds are respectively converged into two feeding main pipes to enter the HCFC-22 reactor after being limited by the branch pipes and the current limiter, so that the problem that the feeding pipe is corroded and damaged due to gas-liquid coexistence caused by gas-phase reflux in the HCFC-22 reactor when the feeding pipe runs fully is solved.
Drawings
In order that the utility model may be more 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, in which
Fig. 1 is a schematic plan view of the present utility model.
The reference numerals in the drawings are:
1. a cylinder; 101. a first heating jacket; 102. a first steam inlet pipe a; 103. a first steam inlet pipe b; 104. a first steam outlet pipe; 2. a mixing device; 3-1, a feeding pipe a;3-2, feeding pipe b; 4. a return pipe; 5. HCFC-22 reactor; 6. an air outlet pipe; 7. a chloroform preheater; 701. a second heating jacket; 8. an anhydrous hydrogen fluoride preheater; 801. a third heating jacket; 9. a reflux column cooling system; 901. a process gas outlet pipe, a chloroform preheater feeding pipe and a chloroform preheater feeding pipe; 12. a second steam inlet pipe; 13. a second steam outlet pipe; 14. a chloroform preheater discharge pipe; 1401. a first branch pipe of a discharging pipe of the chloroform preheater; 1402. a second branch pipe of the discharging pipe of the chloroform preheater; 15. a feed pipe of the anhydrous hydrogen fluoride preheater; 16. a third steam inlet pipe; 17. a third steam outlet pipe; 18. a chlorine supplementing pipe; 19. a discharge pipe of the anhydrous hydrogen fluoride preheater; 1901. a first branch pipe of a discharging pipe of the anhydrous hydrogen fluoride preheater; 1902. a second branch pipe of the discharging pipe of the anhydrous hydrogen fluoride preheater; 20-1, chloroform feed line restrictor a;20-2, a chloroform feed tube restrictor b;21-1 anhydrous hydrogen fluoride feed line restrictor a;21-2, anhydrous hydrogen fluoride feed line restrictor b.
Detailed Description
The utility model will be further described with reference to the drawings and examples for the purpose of illustrating the features of the utility model.
Examples:
referring to fig. 1, an embodiment of the present utility model provides an HCFC-22 production apparatus comprising a chloroform preheater, an anhydrous hydrogen fluoride preheater, a reflux column cooling system, and an HCFC-22 reactor,
the chloroform preheater 7 is provided with a chloroform feed pipe 11, and the anhydrous hydrogen fluoride preheater 8 is provided with an anhydrous hydrogen fluoride feed pipe 15 and a chlorine gas replenishing pipe 18, through which the raw materials required for production are fed into the entire system.
The outer side of the cylinder body 1 is provided with a first heating jacket 101, and the first heating jacket 101 is sleeved with a first steam inlet pipe a102 for entering heating steam, a first steam inlet pipe b103 and a first steam outlet pipe 104 for discharging steam condensate; a second heating jacket 701 is arranged outside the chloroform preheater 7, a second steam inlet pipe 12 and a second steam outlet pipe 13 are arranged on the second heating jacket 701, and the second steam outlet pipe 13 is connected with the first steam inlet pipe b 103; a third heating jacket 801 is arranged outside the anhydrous hydrogen fluoride preheater 8, a third steam inlet pipe 16 and a third steam outlet pipe 17 are arranged on the third heating jacket, and the third steam outlet pipe 17 is connected with the first steam inlet pipe b 103. The chloroform preheater 7, the anhydrous hydrogen fluoride preheater 8 and the HCFC-22 reactor 5 are provided with heating jackets, so that the overall reaction efficiency can be accelerated, and the production efficiency can be further accelerated. Meanwhile, the first heating jacket 101, the second heating jacket 701 and the third heating jacket 801 together form a multi-stage utilization system of heating steam, so that the heating steam is utilized to the maximum extent, and the energy consumption is saved.
The feed pipe a3-1 is communicated with the chloroform preheater 7 through a first branch pipe 1401 of a discharge pipe of the chloroform preheater, and a flow restrictor a20-1 of the chloroform feed pipe is arranged on the first branch pipe 1401 of the discharge pipe of the chloroform preheater; the feed pipe a3-1 is communicated with the anhydrous hydrogen fluoride preheater 8 through a first branch pipe 1901 of the discharge pipe of the anhydrous hydrogen fluoride preheater, and a flow restrictor a21-1 of the anhydrous hydrogen fluoride feed pipe is arranged on the first branch pipe 1901 of the discharge pipe of the anhydrous hydrogen fluoride preheater; the feed pipe b3-2 is communicated with the chloroform preheater 7 through a second branch pipe 1402 of the chloroform preheater discharge pipe, and a chloroform feed pipe restrictor b20-2 is arranged on the second branch pipe 1402 of the chloroform preheater discharge pipe; the feed pipe b3-2 is communicated with the anhydrous hydrogen fluoride preheater 8 through a second branch pipe 1902 of the discharge pipe of the anhydrous hydrogen fluoride preheater, and a flow restrictor b21-2 of the anhydrous hydrogen fluoride feed pipe is arranged on the second branch pipe 1902 of the discharge pipe of the anhydrous hydrogen fluoride preheater. By dividing the chloroform preheater discharge pipe 14 and the anhydrous hydrogen fluoride preheater discharge pipe 19 into two branch pipes, a mixed gas of two gases is uniformly input into the feed pipe a3-1 and the feed pipe b3-2, and the reaction efficiency is improved. In addition, each branch pipe is also provided with a current limiter, so that the content ratio of different gases of each feeding pipe can be flexibly controlled, different production requirements are met, and the problem that the feeding pipes are corroded and damaged due to gas-liquid coexistence caused by gas phase reflux in the HCFC-22 reactor is avoided.
The HCFC-22 reactor 5 comprises a cylinder 1 and a mixing device 2, the mixing device 2 is positioned in the cylinder 1, a return pipe 4 is arranged at the upper end of the mixing device 2, the return pipe 4 is arranged at the middle of the upper end of the cylinder 1, the lower end of the return pipe 4 is connected with the mixing device 2, and the upper end of the return pipe 2 penetrates out of the upper end of the cylinder 1 and is connected with the lower end of a return tower cooling system 9; the left side and the right side of the return pipe 2 are respectively provided with a feed pipe a3-1 and a feed pipe b3-2 which are communicated with the chloroform preheater 7 and the anhydrous hydrogen fluoride preheater 8, and the feed pipe a3-1 and the feed pipe b3-2 are symmetrically arranged at the upper end of the cylinder body 1. The system is designed according to the convection principle, the mixing device 2 in the reactor is of a guide cylinder structure, the temperature of the reflux material is lower than the temperature in the reactor because the reflux pipe 4 is arranged in the middle, and after the reflux material enters the mixing device 2, the temperature in the mixing device 2 is generally lower than the temperature outside the mixing device 2, and the density of the reflux material is larger than the density of the reflux material outside the mixing device because of the temperature difference between the inside and the outside, so that convection from the inside to the outside of the mixing device 2 is formed, and internal and external convection flow is formed. The materials in the whole reactor are fully mixed to achieve uniform heating and uniform reaction, thereby reducing the yield of R23.
The cylinder 1 is provided with an air outlet pipe 6 which is communicated with a reflux tower cooling system 9, and the upper end of the reflux tower cooling system 9 is provided with a process gas outlet pipe 901. The finished product process gas generated by the full reaction in the HCFC-22 reactor 5 enters the reflux tower cooling system 9 from the gas outlet pipe 6 and is discharged through the process gas outlet pipe 901 for later production links.
The above examples and drawings are only for illustrating the technical aspects of the present utility model, but not for limiting the same, and it should be understood by those skilled in the art that the present utility model is described in detail with reference to the preferred embodiments, and that the changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present utility model and the scope of the claims of the present utility model. Other related art structures not disclosed in detail in the present utility model are prior art in the field.
Claims (10)
1. A HCFC-22 production device comprises a chloroform preheater (7), an anhydrous hydrogen fluoride preheater (8) and a reflux tower cooling system (9),
it is characterized in that the method comprises the steps of,
the device comprises a cylinder body (1), a mixing device (2), a reflux pipe (4) and a cooling system (9), wherein the mixing device (2) is arranged in the cylinder body (1), the lower end of the reflux pipe (4) is connected with the mixing device (2), and the upper end of the reflux pipe (4) penetrates out of the upper end of the cylinder body (1) and is connected with the lower end of the reflux tower cooling system (9); the left side and the right side of the return pipe (4) are respectively provided with a feed pipe a (3-1) and a feed pipe b (3-2) which are communicated with the chloroform preheater (7) and the anhydrous hydrogen fluoride preheater (8); the cylinder body (1) is provided with an air outlet pipe (6) which is communicated with a reflux tower cooling system (9).
2. HCFC-22 production facility according to claim 1, wherein the feed pipe a (3-1) is in communication with a chloroform preheater (7) through a chloroform preheater discharge pipe first branch (1401), the chloroform preheater discharge pipe first branch (1401) being provided with a chloroform feed pipe restrictor a (20-1);
the feed pipe a (3-1) is communicated with the anhydrous hydrogen fluoride preheater (8) through a first branch pipe (1901) of the discharge pipe of the anhydrous hydrogen fluoride preheater, and a flow restrictor a (21-1) of the anhydrous hydrogen fluoride feed pipe is arranged on the first branch pipe (1901) of the discharge pipe of the anhydrous hydrogen fluoride preheater.
3. HCFC-22 production facility according to claim 2, wherein the feed pipe b (3-2) is in communication with the chloroform preheater (7) via a chloroform preheater discharge pipe second branch (1402), the chloroform preheater discharge pipe second branch (1402) being provided with a chloroform feed pipe restrictor b (20-2);
the feed pipe b (3-2) is communicated with the anhydrous hydrogen fluoride preheater (8) through a second branch pipe (1902) of the discharge pipe of the anhydrous hydrogen fluoride preheater, and a flow restrictor b (21-2) of the anhydrous hydrogen fluoride feed pipe is arranged on the second branch pipe (1902) of the discharge pipe of the anhydrous hydrogen fluoride preheater.
4. A HCFC-22 production plant as claimed in claim 3, wherein the chloroform preheater (7) is provided with a chloroform feed line (11) and the anhydrous hydrogen fluoride preheater (8) is provided with an anhydrous hydrogen fluoride feed line (15) and a chlorine make-up line (18).
5. HCFC-22 production plant according to claim 1, characterized in that the outside of the cylinder (1) is provided with a first heating jacket (101), the first heating jacket (101) being provided with a first steam inlet pipe a (102) for entering heating steam, a first steam inlet pipe b (103) and a first steam outlet pipe (104) for discharging steam condensate.
6. The HCFC-22 production facility as claimed in claim 5, wherein a second heating jacket (701) is provided outside the chloroform preheater (7), and a second steam inlet pipe (12) and a second steam outlet pipe (13) are provided on the second heating jacket, the second steam outlet pipe (13) being in communication with the first steam inlet pipe b (103).
7. HCFC-22 production plant according to claim 6, characterized in that a third heating jacket (702) is provided outside the anhydrous hydrogen fluoride preheater (8), on which third heating jacket a third steam inlet pipe (16) and a third steam outlet pipe (17) are provided, said third steam outlet pipe (17) being in communication with the first steam inlet pipe b (103).
8. HCFC-22 production plant according to claim 1, characterized in that the reflux column cooling system (9) is provided at its upper end with a process gas outlet pipe (901).
9. HCFC-22 production plant according to claim 1, characterized in that the feed pipe a (3-1) and the feed pipe b (3-2) are symmetrically arranged at the upper end of the cylinder (1).
10. The HCFC-22 production apparatus as claimed in claim 1, wherein the return tube (4) is centrally arranged at the upper end of the cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321596029.1U CN220071645U (en) | 2023-06-21 | 2023-06-21 | HCFC-22 production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321596029.1U CN220071645U (en) | 2023-06-21 | 2023-06-21 | HCFC-22 production equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220071645U true CN220071645U (en) | 2023-11-24 |
Family
ID=88821433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321596029.1U Active CN220071645U (en) | 2023-06-21 | 2023-06-21 | HCFC-22 production equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220071645U (en) |
-
2023
- 2023-06-21 CN CN202321596029.1U patent/CN220071645U/en active Active
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