Industrial equipment for producing fluorophosgene
By designing the nozzle gradient and partitioning the distributor, and optimizing the cooling layer and air intake mechanism, the problem of impurity generation in phosgene production has been solved, improving product purity and production efficiency.
Patent Information
- Application Number
- CN202423306353.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-31
Smart Images
Figure CN223760965U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to reaction container technical field especially relates to a kind of for producing fluorine light gas industrial equipment. BACKGROUND
[0002] As a kind of chemical substance with wide application prospect, fluorine light gas shows unique value in fine chemical synthesis, fluorine-containing ether intermediate preparation and electronic product etching and multiple fields.Especially in electronic product manufacturing, the purity requirement of fluorine light gas is extremely high, because it directly affects the performance and quality of final product.
[0003] However, in the production of fluorine light gas and its related chemical reaction process, due to the special chemical properties of fluorine gas, the reaction conditions of CO must be strictly controlled, otherwise carbon tetrafluoride (CF4) and other impurities will be generated.These impurities not only reduce the purity of the product, but also seriously affect the yield of the product, thereby increasing the production cost and reducing the production efficiency. INNOVATION CONTENT
[0004] The utility model provides a kind of for producing fluorine light gas industrial equipment, to solve the problem of carbon tetrafluoride and other impurities in fluorine light gas production process, affect the yield of product.
[0005] The utility model provides a kind of for producing fluorine light gas industrial equipment, comprising:
[0006] Reactor, inside is formed with reaction cavity;
[0007] First gas inlet mechanism, including first gas inlet pipe, distributor and multiple groups of different length nozzles, the distributor is arranged in the reaction cavity, the first gas inlet pipe is communicated with the distributor, the distributor is sequentially provided with multiple gas inlet zones in ring from outside to inside, multiple groups of the nozzle are arranged in multiple gas inlet zones, and the nozzle is all communicated with the distributor, the length of the nozzle arranged on the gas inlet zone on the outside is less than the length of the nozzle arranged on the gas inlet zone on the inside, to pass through the first gas inlet pipe, the distributor cooperates multiple groups of different length nozzles and is inhaled CO;
[0008] Second gas inlet mechanism, communicated with the reaction cavity, for passing fluorine gas;
[0009] Exhaust mechanism, communicated with the reaction cavity, for leading out the gas after reaction.
[0010] The utility model provides a kind of industrial equipment for producing fluorine light gas, the nozzle is equipped with three groups, respectively length is gradually increased outer nozzle, middle layer nozzle and inner layer nozzle;The distributor is sequentially provided with outer layer gas inlet area, middle layer gas inlet area and inner layer gas inlet area from outside to inside, the outer nozzle is arranged in the outer layer gas inlet area, the middle layer nozzle is arranged in the middle layer gas inlet area, and the inner layer nozzle is arranged in the inner layer gas inlet area.
[0011] The utility model provides a kind of industrial equipment for producing fluorine light gas, the cross-sectional area of the nozzle is 75%-95% of the cross-sectional area of the first gas inlet pipe.
[0012] The utility model provides a kind of industrial equipment for producing fluorine light gas, the length of the outer nozzle is 4-6cm, the length of the middle layer nozzle is 9-11cm, and the length of the inner layer nozzle is 14-16cm.
[0013] The utility model provides a kind of industrial equipment for producing fluorine light gas, the size of the corresponding nozzle hole of the outer nozzle is 1mm-2mm, the size of the corresponding nozzle hole of the middle layer nozzle is 2mm-3mm, and the size of the corresponding nozzle hole of the inner layer nozzle is 2mm-4mm.
[0014] The utility model provides a kind of industrial equipment for producing fluorine light gas, and the nozzle is copper nozzle, nickel nozzle or alloy nozzle.
[0015] The utility model provides a kind of industrial equipment for producing fluorine light gas, further includes:
[0016] Cooling layer, is set in the reactor outer, be equipped with heat exchange cavity in the cooling layer, the cooling layer is equipped with cooling medium import and cooling medium export with the heat exchange cavity intercommunication.
[0017] The utility model provides a kind of industrial equipment for producing fluorine light gas, and the cooling layer is jacket, the jacket is tightly and uniformly covered in the outer wall of the reactor, forms the heat exchange cavity of airtightness, and the cooling medium import and cooling medium export are respectively arranged in the upper and lower ends of the jacket.
[0018] The utility model provides a kind of industrial equipment for producing fluorine light gas, and the second gas inlet mechanism includes: second gas inlet pipe, the second gas inlet pipe is arranged on the reactor, and is communicated with the bottom of the reaction cavity.
[0019] The utility model provides a kind of industrial equipment for producing fluorine light gas, and the exhaust mechanism includes: exhaust pipe, the exhaust pipe is arranged on the reactor, and is communicated with the top of the reaction cavity.
[0020] The industrial equipment for producing fluorine light gas has the advantages that the nozzles are designed in a gradient, the length of the nozzles arranged on the outer side air inlet area is smaller than the length of the nozzles arranged on the inner side air inlet area, so that the heat dissipation is more effective during the reaction process, longer nozzles are arranged at the position with high pressure of the distributor to control the flow rate, and shorter nozzles are arranged around the position with low pressure of the distributor to ensure the stable flow rate of each nozzle outlet, so that the reaction temperature is balanced, the local temperature is prevented from being too high or the local fluorination is prevented from being excessive, and the generation of by-product CF4 is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0022] Figure 1 is a schematic diagram of the industrial equipment for producing fluorine light gas provided by the present application.
[0023] Figure 2 is a schematic diagram of the first air inlet mechanism provided by the present application.
[0024] Reference signs:
[0025] 100, reactor;
[0026] 200, first air inlet mechanism; 201, first air inlet pipe; 202, distributor; 203, outer layer nozzle; 204, middle layer nozzle; 205, inner layer nozzle;
[0027] 300, second air inlet mechanism;
[0028] 400, exhaust mechanism;
[0029] 500, cooling layer; 501, cooling medium inlet; 502, cooling medium outlet. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be described clearly and completely in combination with the drawings in the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.
[0031] The following will be described in combination with Figures 1-2The utility model discloses an industrial equipment for producing fluorine phosgene.
[0032] In some embodiments, as shown in Figure 1 and Figure 2 The industrial equipment for producing fluorine phosgene comprises a reactor 100, a first gas inlet mechanism 200, a second gas inlet mechanism 300 and an exhaust mechanism 400. The reactor 100 has a reaction cavity formed inside; the first gas inlet mechanism 200 comprises a first gas inlet pipe 201, a distributor 202 and multiple groups of nozzles with different lengths, the distributor 202 is arranged inside the reaction cavity, the first gas inlet pipe 201 is in communication with the distributor 202, the distributor 202 is sequentially provided with multiple gas inlet zones in the form of rings from the outside to the inside, the multiple groups of nozzles are arranged in the multiple gas inlet zones respectively, and the nozzles are all in communication with the distributor 202; the length of the nozzles arranged on the outer side gas inlet zone is less than the length of the nozzles arranged on the inner side gas inlet zone, so that CO is introduced through the first gas inlet pipe 201, the distributor 202 and the multiple groups of nozzles with different lengths; the second gas inlet mechanism 300 is in communication with the reaction cavity and is used for introducing fluorine gas; and the exhaust mechanism 400 is in communication with the reaction cavity and is used for leading out the reacted gas.
[0033] In this embodiment, the reactor 100 comprises the reaction cavity and is the main place for fluorine phosgene production. The first gas inlet pipe 201 of the first gas inlet mechanism 200 is used for conveying raw gas CO (carbon monoxide) into the reactor 100. The distributor 202 is located inside the reaction cavity and is designed with multiple gas inlet zones in the form of rings arranged from the outside to the inside. The multiple groups of nozzles are arranged in the multiple gas inlet zones respectively and are in communication with the distributor 202. The length of the nozzles changes with the change of the position of the gas inlet zone, and the length of the nozzles of the outer side gas inlet zone is less than the length of the nozzles of the inner side gas inlet zone. The second gas inlet mechanism 300 is used for introducing fluorine gas into the reaction cavity. The exhaust mechanism 400 is used for leading out the reacted gas.
[0034] When fluorine phosgene needs to be produced, CO is sent from the first gas inlet pipe 201 into the distributor 202 through the first gas inlet mechanism 200. Since the nozzles are designed in a gradient manner, CO will enter the reaction cavity according to the predetermined flow rate and temperature distribution. At the same time, fluorine gas is introduced into the reaction cavity through the second gas inlet mechanism 300. The fluorine gas and CO occur fluorination reaction in the reaction cavity.
[0035] During the reaction process, the operator needs to closely monitor the temperature, pressure and other parameters in the reaction cavity, and adjust the flow of the first gas inlet mechanism 200 and the second gas inlet mechanism 300 according to the actual situation, so as to keep the reaction smooth. The gradient design of the nozzles helps to dissipate heat more effectively during the reaction process, and prevents local temperature from being too high or excessive fluorination by controlling the flow rate.
[0036] After the reaction is completed, the reacted gas is led out through the exhaust mechanism 400 and is subjected to subsequent treatment to collect fluorine phosgene products.
[0037] The industrial equipment for producing fluorine light gas has the nozzle adopting gradient design, the nozzle length arranged on the outer side air inlet area is smaller than the nozzle length arranged on the inner side air inlet area, heat is dissipated more effectively in the reaction process, longer nozzles are arranged at the position with high pressure of the distributor 202 to control the flow rate, shorter nozzles are arranged around the position with low pressure of the distributor 202 to ensure that the flow rate of each nozzle outlet is stable, the reaction temperature is balanced, and the local temperature is too high or local fluorination is excessive caused by the violent reaction is avoided, thereby effectively reducing the generation of by-product CF4.
[0038] In some embodiments, as shown in Figure 1 and Figure 2 , the nozzle is provided with three groups, which are the outer layer nozzle 203, the middle layer nozzle 204 and the inner layer nozzle 205 with increasing lengths; the distributor 202 is sequentially provided with an outer layer air inlet area, a middle layer air inlet area and an inner layer air inlet area from outside to inside, the outer layer nozzle 203 is arranged in the outer layer air inlet area, the middle layer nozzle 204 is arranged in the middle layer air inlet area, and the inner layer nozzle 205 is arranged in the inner layer air inlet area.
[0039] Specifically, the outer layer nozzle 203 is arranged in the outer layer air inlet area and is the group of nozzles with the shortest length. Since the outer layer air inlet area is usually located at the edge of the reactor 100, the pressure is relatively low, and therefore the shorter nozzle can ensure sufficient flow rate in this area while avoiding excessive local temperature.
[0040] The middle layer nozzle 204 is arranged in the middle layer air inlet area and has a moderate length. The pressure in this area is between the outer layer and the inner layer, so the length of the nozzle also needs to be adjusted accordingly to maintain stable flow rate and temperature distribution.
[0041] The inner layer nozzle 205 is arranged in the inner layer air inlet area and is the group of nozzles with the longest length. The inner layer air inlet area is usually located at the center of the reactor 100, and the pressure is the highest. The longer nozzle can slow down the flow rate to prevent excessive local temperature caused by too fast flow rate, while ensuring that the fluorination reaction can proceed uniformly.
[0042] The distributor 202 is sequentially provided with an outer layer air inlet area, a middle layer air inlet area and an inner layer air inlet area from outside to inside, and each air inlet area is connected with a nozzle of corresponding length. This design ensures that the raw gas (CO) can enter the reaction chamber according to the predetermined flow rate and temperature distribution, thereby improving the efficiency of the fluorination reaction and the quality of the product.
[0043] Through the gradient design of the nozzle and the partitioning of the distributor 202, the equipment can dissipate heat more effectively, control the flow rate, and maintain the balance of the reaction temperature during the working process. This helps to reduce the generation of by-product CF4, improve the purity of fluorine light gas and the production efficiency.
[0044] Example 1
[0045] The cross-sectional area of the first inlet pipe 201 and the cross-sectional area data S2 of the second inlet pipe of CO were both 1.766 cm2. The flow rate or flow data of the second inlet pipe of CO were both 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle was 1.766 cm2x 75% = 1.3245, and the final generated impurity CF4 content accounted for 3.5% of fluoroform.
[0046] Example 2
[0047] The cross-sectional area of the first inlet pipe 201 and the cross-sectional area data S2 of the second inlet pipe of CO were both 1.766 cm2. The flow rate or flow data of the second inlet pipe of CO were both 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle was 1.766 cm2x 75% = 1.3245, and the final generated impurity CF4 content accounted for 3.5% of fluoroform.
[0048] Example 3
[0049] The cross-sectional area of the first inlet pipe 201 and the cross-sectional area data S2 of the second inlet pipe of CO were both 1.766 cm2. The flow rate or flow data of the second inlet pipe of CO were both 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle was 1.766 cm2x 75% = 1.3245, and the final generated impurity CF4 content accounted for 3.5% of fluoroform.
[0050] Comparative Example 1
[0051] The cross-sectional area of the first inlet pipe 201 and the cross-sectional area data S2 of the second inlet pipe of CO were both 1.766 cm2. The flow rate or flow data of the second inlet pipe of CO were both 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle was 1.766 cm2x 75% = 1.3245, and the final generated impurity CF4 content accounted for 3.5% of fluoroform.
[0052] Comparative Example 2
[0053] The cross-sectional area of the first inlet pipe 201 and the cross-sectional area data S2 of the second inlet pipe of CO were both 1.766 cm2. The flow rate or flow data of the second inlet pipe of CO were both 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle was 1.766 cm2x 75% = 1.3245, and the final generated impurity CF4 content accounted for 3.5% of fluoroform.
[0054] Comparative Example 3
[0055] The cross-sectional area of the first inlet pipe 201 and the cross-sectional area data S2 of the second inlet pipe for CO are both 1.766 cm2. The flow rate or flow data of the second inlet pipe for CO are both 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle is 1.766 cm2x 70% = 1.2362, and the final generated impurity CF4 content is 3.48% of fluoroform.
[0056] From Example 1, Example 2, Example 3, and Comparative Example 1, Comparative Example 2, and Comparative Example 3, the following information can be observed:
[0057] When the cross-sectional area S1 of the nozzle is 70%-75% of the cross-sectional area of the first inlet pipe 201 (and the second inlet pipe, which has the same cross-sectional area) (Example 1 and Comparative Example 3), the generated impurity CF4 content is relatively low, about 3.48%-3.5% of fluoroform.
[0058] When the cross-sectional area S1 of the nozzle is 75%-95% of the cross-sectional area of the first inlet pipe 201 (Example 1, Example 2, and Example 3), the generated impurity CF4 content is between 3.5%-4.7%, which is relatively low within this range.
[0059] When the cross-sectional area S1 of the nozzle exceeds 95% of the cross-sectional area of the first inlet pipe 201 (Comparative Example 1 and Comparative Example 2), the generated impurity CF4 content increases significantly, reaching 8.6%-10.2%.
[0060] From the above analysis, it can be concluded that:
[0061] When the cross-sectional area of the nozzle is between 70%-95% of the cross-sectional area of the first inlet pipe 201, the generated impurity CF4 content is relatively low. But more specifically, when the cross-sectional area of the nozzle is close to 75% (as shown in Example 1 and Comparative Example 3), the impurity content reaches the lowest. However, considering that Example 3 is not much different from Example 1, and both are within a relatively low range, it can be considered that 70%-95% is a more extensive but still effective range.
[0062] Example 4
[0063] The cross-sectional area of the first inlet pipe 201 and the cross-sectional area data S2 of the second inlet pipe for CO are both 1.766 cm2. The flow rate or flow data of the second inlet pipe for CO are both 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle is 1.766 cm2x 75% = 1.3245. The temperature is controlled at 110°C. The number and size of the nozzles: 42 (the nozzle size is 2 mm in diameter).
[0064] The length of the outer layer nozzle 203, the middle layer nozzle 204 and the inner layer nozzle 205 is 3 cm, 7 cm and 10 cm respectively, and the test result shows that the content of the impurity CF4 in the final generated fluorine light gas is 5.6%.
[0065] Example 5
[0066] The cross-sectional area of the first gas inlet pipe 201 and the cross-sectional area data S2 of the second CO gas inlet pipe are both 1.766 cm2. The flow rate or flow data of the second CO gas inlet pipe is 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle is 1.766 cm2x 75% = 1.3245. The temperature is controlled at 110°C. The number and size of the nozzles are 42 (the nozzle size is 2 mm in diameter).
[0067] The length of the outer layer nozzle 203, the middle layer nozzle 204 and the inner layer nozzle 205 is 5 cm, 10 cm and 15 cm respectively, and the test result shows that the content of the impurity CF4 in the final generated fluorine light gas is 3.9%.
[0068] Example 6
[0069] The cross-sectional area of the first gas inlet pipe 201 and the cross-sectional area data S2 of the second CO gas inlet pipe are both 1.766 cm2. The flow rate or flow data of the second CO gas inlet pipe is 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle is 1.766 cm2x 75% = 1.3245. The temperature is controlled at 110°C. The number and size of the nozzles are 42 (the nozzle size is 2 mm in diameter).
[0070] The length of the outer layer nozzle 203, the middle layer nozzle 204 and the inner layer nozzle 205 is 8 cm, 12 cm and 17 cm respectively, and the test result shows that the content of the impurity CF4 in the final generated fluorine light gas is 3.7%.
[0071] Control group 4
[0072] The cross-sectional area of the first gas inlet pipe 201 and the cross-sectional area data S2 of the second CO gas inlet pipe are both 1.766 cm2. The flow rate or flow data of the second CO gas inlet pipe is 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle is 1.766 cm2x 75% = 1.3245. The temperature is controlled at 110°C. The number and size of the nozzles are 42 (the nozzle size is 2 mm in diameter).
[0073] The length of the outer layer nozzle 203, the middle layer nozzle 204 and the inner layer nozzle 205 is 5 cm, 10 cm and 15 cm respectively, and the test result shows that the content of the impurity CF4 in the final generated fluorine light gas is 3.9%.
[0074] Control group 5
[0075] The cross-sectional area of the first inlet pipe 201 and the cross-sectional area data S2 of the second inlet pipe of CO were both 1.766 cm2. The flow rate or flow data of the second inlet pipe of CO were both 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle was 1.766 cm2x 75% = 1.3245. The temperature was controlled at 110°C. The number and size of the nozzles: 42 (nozzle size: diameter 2 mm).
[0076] When the lengths of the outer layer nozzle 203, the middle layer nozzle 204, and the inner layer nozzle 205 were all 10 cm, the test resulted in the final generated impurity CF4 content accounting for 4.7% of fluoroform.
[0077] Control group 6
[0078] The cross-sectional area of the first inlet pipe 201 and the cross-sectional area data S2 of the second inlet pipe of CO were both 1.766 cm2. The flow rate or flow data of the second inlet pipe of CO were both 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle was 1.766 cm2x 75% = 1.3245. The temperature was controlled at 110°C. The number and size of the nozzles: 42 (nozzle size: diameter 2 mm).
[0079] When the lengths of the outer layer nozzle 203, the middle layer nozzle 204, and the inner layer nozzle 205 were all 15 cm, the test resulted in the final generated impurity CF4 content accounting for 4.5% of fluoroform.
[0080] From Example 4, Example 5, Example 6, and Control Group 4, Control Group 5, and Control Group 6, the following information can be observed:
[0081] When the lengths of the outer layer nozzle 203, the middle layer nozzle 204, and the inner layer nozzle 205 were 3 cm, 7 cm, and 10 cm, respectively, the content of the impurity CF4 was relatively high, at 5.6%.
[0082] When the lengths of the outer layer nozzle 203, the middle layer nozzle 204, and the inner layer nozzle 205 were 5 cm, 10 cm, and 15 cm, respectively, the content of the impurity CF4 decreased to 3.9%.
[0083] When the lengths of the outer layer nozzle 203, the middle layer nozzle 204, and the inner layer nozzle 205 were further adjusted to 8 cm, 12 cm, and 17 cm, respectively, the content of the impurity CF4 slightly increased but remained at a low level, at 3.7%.
[0084] In the control groups, when the nozzle lengths of all layers were the same and were 5 cm, 10 cm, and 15 cm, respectively, the content of the impurity CF4 was 5.2%, 4.7%, and 4.5%, respectively, which were higher or close to the lowest content in Example 5 and Example 6, but lower than the content in Example 4.
[0085] From the data, it can be seen that the nozzle length combination in Example 6 (8 cm outer, 12 cm middle, 17 cm inner) resulted in a relatively low impurity content (3.7%), although it was slightly higher than the 3.9% in Example 5.
[0086] The final conclusion is based on a comprehensive analysis of all the test data:
[0087] The length of the outer nozzles 203 in the range of 4-6 cm helped to reduce the impurity content (although this conclusion was not directly derived from the data, but based on the comparison of Example 4 and Control Group 4). Preferably 5 cm.
[0088] The length of the middle nozzles 204 in the range of 9-11 cm (close to the length in Example 5 and Example 6) resulted in a relatively low impurity content. Preferably 10 cm.
[0089] The length of the inner nozzles 205 in the range of 14-16 cm (close to the length in Example 6) also kept the impurity content at a low level. Preferably 15 cm.
[0090] Example 7
[0091] The cross-sectional area of the first inlet pipe 201 and the cross-sectional area data S2 of the second inlet pipe of CO were both 1.766 cm2. The flow rate or flow data of the second inlet pipe of CO were both 1.5 m3 / h (3 m / s). The cross-sectional area of the nozzle S1 was 1.766 cm2x 75% = 1.3245. The temperature was controlled at 110°C. The number and size of the nozzles: 42 (the lengths of the outer nozzles 203, middle nozzles 204 and inner nozzles 205 were 5 cm, 10 cm and 15 cm respectively) inner middle outer number (9, 14, 14).
[0092] When the sizes of the corresponding orifices of the outer nozzles 203, middle nozzles 204 and inner nozzles 205 were 1 mm, 2 mm and 2.5 mm respectively, the test resulted in a final impurity CF4 content of 3.3% of the fluorophosgene.
[0093] Example 8
[0094] The cross-sectional area of the first inlet pipe 201 and the cross-sectional area data S2 of the second inlet pipe of CO were both 1.766 cm2. The flow rate or flow data of the second inlet pipe of CO were both 1.5 m3 / h (3 m / s). The cross-sectional area of the nozzle S1 was 1.766 cm2x 75% = 1.3245. The temperature was controlled at 110°C. The number and size of the nozzles: 42 (the lengths of the outer nozzles 203, middle nozzles 204 and inner nozzles 205 were 5 cm, 10 cm and 15 cm respectively) inner middle outer number (9, 14, 14).
[0095] The test obtained the final generated impurity CF4 content of 6.7% of fluoroform.
[0096] Example 9
[0097] The cross-sectional area of the first gas inlet pipe 201 and the cross-sectional area data S2 of the second CO gas inlet pipe were both 1.766 cm2. The flow rate or flow data of the second CO gas inlet pipe were both 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle was 1.766 cm2x 75% = 1.3245. The temperature was controlled at 110°C. The number and size of the nozzles: 42 (the lengths of the outer layer nozzle 203, the middle layer nozzle 204 and the inner layer nozzle 205 were 5 cm, 10 cm and 15 cm respectively) inner, middle and outer number (9, 14, 14).
[0098] The test obtained the final generated impurity CF4 content of 9.9% of fluoroform.
[0099] Comparative Example 7
[0100] The cross-sectional area of the first gas inlet pipe 201 and the cross-sectional area data S2 of the second CO gas inlet pipe were both 1.766 cm2. The flow rate or flow data of the second CO gas inlet pipe were both 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle was 1.766 cm2x 75% = 1.3245. The temperature was controlled at 110°C. The number and size of the nozzles: 42 (the lengths of the outer layer nozzle 203, the middle layer nozzle 204 and the inner layer nozzle 205 were 5 cm, 10 cm and 15 cm respectively) inner, middle and outer number (9, 14, 14).
[0101] The test obtained the final generated impurity CF4 content of 4.2% of fluoroform.
[0102] Comparative Example 8
[0103] The cross-sectional area of the first gas inlet pipe 201 and the cross-sectional area data S2 of the second CO gas inlet pipe were each 1.766 cm2. The flow rate or flow volume data of the second CO gas inlet pipe were each 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle was 1.766 cm2x 75% = 1.3245. The temperature was controlled at 110°C. The number and size of the nozzles: 42 (the lengths of the outer layer nozzles 203, the middle layer nozzles 204, and the inner layer nozzles 205 were 5 cm, 10 cm, and 15 cm, respectively) inner, middle, and outer numbers (9, 14, 14).
[0104] When the sizes of the corresponding injection holes of the outer layer nozzles 203, the middle layer nozzles 204, and the inner layer nozzles 205 were each 2.0 mm, the test resulted in the final generated impurity CF4 content accounting for 3.6% of the fluoroform.
[0105] Comparative Example 9
[0106] The cross-sectional area of the first gas inlet pipe 201 and the cross-sectional area data S2 of the second CO gas inlet pipe were each 1.766 cm2. The flow rate or flow volume data of the second CO gas inlet pipe were each 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle was 1.766 cm2x 75% = 1.3245. The temperature was controlled at 110°C. The number and size of the nozzles: 42 (the lengths of the outer layer nozzles 203, the middle layer nozzles 204, and the inner layer nozzles 205 were 5 cm, 10 cm, and 15 cm, respectively) inner, middle, and outer numbers (9, 14, 14).
[0107] When the sizes of the corresponding injection holes of the outer layer nozzles 203, the middle layer nozzles 204, and the inner layer nozzles 205 were 2.5 mm, 2 mm, and 1 mm, respectively, the test resulted in the final generated impurity CF4 content accounting for 7.8% of the fluoroform.
[0108] Comparative Example 10
[0109] The cross-sectional area of the first gas inlet pipe 201 and the cross-sectional area data S2 of the second CO gas inlet pipe were each 1.766 cm2. The flow rate or flow volume data of the second CO gas inlet pipe were each 1.5 m3 / h (3 m / s). The cross-sectional area S1 of the nozzle was 1.766 cm2x 75% = 1.3245. The temperature was controlled at 110°C. The number and size of the nozzles: 42 (the lengths of the outer layer nozzles 203, the middle layer nozzles 204, and the inner layer nozzles 205 were 5 cm, 10 cm, and 15 cm, respectively) inner, middle, and outer numbers (9, 14, 14).
[0110] When the sizes of the corresponding injection holes of the outer layer nozzles 203, the middle layer nozzles 204, and the inner layer nozzles 205 were 2 mm, 2.5 mm, and 1 mm, respectively, the test resulted in the final generated impurity CF4 content accounting for 5.9% of the fluoroform.
[0111] From Example 7, Example 8, Example 9, and Comparative Example 7, Comparative Example 8, Comparative Example 9, and Comparative Example 10, the following information can be observed:
[0112] When the orifice size of the outer nozzle 203, the middle nozzle 204, and the inner nozzle 205 are 1 mm, 2 mm, and 2.5 mm respectively (Example 7), the resulting impurity CF4 content is relatively low at 3.3%.
[0113] As the orifice size increases, the impurity CF4 content generally increases. For example, in Example 8 and Example 9, as the orifice size increases, the impurity content increases from 6.7% to 9.9%.
[0114] In the comparative examples, when the nozzle orifice size is the same for all layers (Comparative Example 7, Comparative Example 8), or the combination of orifice sizes is not optimal (Comparative Example 9, Comparative Example 10), the impurity CF4 content is generally higher than the lowest content in Example 7.
[0115] Next, it is necessary to determine which combination of orifice sizes can produce the lowest impurity CF4 content.
[0116] From the data, it can be seen that the combination of orifice sizes in Example 7 (outer layer 1 mm, middle layer 2 mm, inner layer 2.5 mm) produces the lowest impurity content (3.3%). This combination is consistent with the final conclusion range given in the question, but provides more specific numerical values.
[0117] The final conclusion is based on the comprehensive analysis of all test data:
[0118] To produce a relatively low impurity CF4 content, the recommended orifice size for the outer nozzle 203 is 1 mm-2 mm (optimal is 1 mm).
[0119] The recommended orifice size for the middle nozzle 204 is 2 mm-3 mm (optimal is 2 mm, but considering the small difference between Example 7 and Comparative Example 8, 3 mm is also an acceptable choice).
[0120] The recommended orifice size for the inner nozzle 205 is 2 mm-4 mm (optimal is 2.5 mm, but 4 mm may also be an effective upper limit value in practical applications, although it will cause a slight increase in impurity content).
[0121] In summary, to produce a relatively low impurity CF4 content, the recommended orifice size for the outer nozzle 203 is 1 mm-2 mm, the recommended orifice size for the middle nozzle 204 is 2 mm-3 mm, and the recommended orifice size for the inner nozzle 205 is 2 mm-4 mm, and the optimal combination is outer layer 1 mm, middle layer 2 mm, and inner layer 2.5-3 mm.
[0122] In some embodiments, the nozzle is a copper nozzle, a nickel nozzle, or an alloy nozzle. Copper is a commonly used metal material that has certain catalytic effects in chemical reactions. However, in some cases, copper can react with reactants, leading to the generation of impurities. Nickel is a metal that is resistant to high temperatures and corrosion, and is often used to manufacture equipment that works in high-temperature or corrosive environments. In chemical reactions, the catalytic activity of nickel is relatively low, so it is less likely to react with reactants. An alloy is a mixture of two or more metal elements, usually with better overall performance than a single metal. Alloy nozzles can be customized according to the specific chemical reaction requirements to optimize reaction efficiency and product purity.
[0123] In some embodiments, as shown in Figure 1 and Figure 2 , the industrial equipment for producing fluorophosgene also includes a cooling layer 500, which is sleeved outside the reactor 100, and a heat exchange cavity is arranged in the cooling layer 500. The cooling layer 500 is provided with a cooling medium inlet 501 and a cooling medium outlet 502 which are in communication with the heat exchange cavity.
[0124] In this embodiment, by adjusting the flow and temperature of the cooling medium, the temperature in the reactor 100 can be accurately controlled to ensure that the reaction is carried out within the optimal temperature range. If the heat generated during the reaction is not removed in time, the temperature may rise, affecting the reaction rate and product distribution. The cooling layer 500 can effectively remove this heat to prevent the adverse effects of temperature rise on the reaction.
[0125] Optionally, the cooling layer 500 can adopt a jacket design, which is tightly and uniformly wrapped around the outer wall of the reactor 100 to form a sealed heat exchange cavity. This design can ensure good contact between the cooling medium and the reactor 100 wall, thereby improving the heat exchange efficiency.
[0126] The cooling medium inlet 501 and the cooling medium outlet 502 are respectively arranged at the upper and lower ends of the jacket, so that the cooling medium can flow uniformly in the heat exchange cavity, further improving the heat exchange efficiency. The selection of the cooling medium depends on the specific reaction conditions and requirements. Commonly used cooling media include water, ethylene glycol, brine, etc. These media have good heat conduction performance and chemical stability, and can effectively remove heat without interfering with the chemical reaction.
[0127] In some embodiments, as shown in Figure 1 and Figure 2As shown, the second gas inlet mechanism 300 includes a second gas inlet pipe. The second gas inlet pipe is arranged on the reactor 100 and communicates with the bottom of the reaction chamber. The second gas inlet pipe is mainly used to introduce the second gas required for the reaction (such as CO in this case) into the reactor 100. Since the second gas inlet pipe communicates with the bottom of the reaction chamber, introducing the gas from the bottom of the reactor 100 can promote the uniform distribution of the gas in the reaction chamber. This helps to ensure that the reactants can fully contact and react throughout the reaction chamber. Bottom gas inlet can also help control the temperature gradient in the reactor 100. When cold gas enters from the bottom, it exchanges heat with the hotter part in the reaction chamber, which helps to reduce local high temperature, thereby maintaining a more stable reaction temperature.
[0128] In some embodiments, as shown in FIG. 1, the second gas inlet mechanism 300 includes a second gas inlet pipe. The second gas inlet pipe is arranged on the reactor 100 and communicates with the bottom of the reaction chamber. Figure 1 and Figure 2 Figure 1 Figure 2 As shown, the exhaust mechanism 400 includes an exhaust pipe arranged on the reactor 100 and communicating with the top of the reaction chamber.
[0129] In this embodiment, the main purpose of the exhaust mechanism 400 is to exhaust the gas produced in the reactor 100 after the reaction is completed, including the target product fluorine light gas and other possible by-products or unreacted gas, from the reaction chamber.
[0130] The exhaust pipe communicates with the top of the reaction chamber to ensure that the gas produced after the reaction is completed can be smoothly exhausted. This design helps to avoid the accumulation of gas in the reactor 100, thereby maintaining the pressure balance and gas flow in the reactor 100.
[0131] In addition, during the reaction, some unwanted impurities or by-products may be produced. The design of the exhaust pipe can be matched with other purification devices (such as filters, scrubbing towers, etc.) to help remove these impurities and improve the purity of the product. The exhaust pipe can also serve as a channel for pressure regulation in the reactor 100. By controlling the opening size of the exhaust pipe and / or equipping it with pressure control devices (such as pressure valves, regulating valves, etc.), the pressure in the reactor 100 can be accurately adjusted to meet the needs of specific reaction conditions.
[0132] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. An industrial plant for the production of fluorophosgene, characterized in that, The application relates to a reactor for preparing fluorinated carbon monoxide. The reactor comprises a reaction chamber, a first gas inlet mechanism, a second gas inlet mechanism and a gas outlet mechanism. The first gas inlet mechanism comprises a first gas inlet pipe, a distributor and multiple groups of nozzles with different lengths. The distributor is arranged in the reaction chamber. The first gas inlet pipe is in communication with the distributor.
2. Industrial plant for the production of fluorophosgene according to claim 1, characterized in that, The distributor is provided with multiple gas inlet areas in annular form from outside to inside.
3. The industrial plant for the production of fluorophosgene according to claim 1, characterized in that, Multiple groups of nozzles are arranged in the multiple gas inlet areas respectively.
4. The industrial plant for the production of fluorophosgene according to claim 2, characterized in that, The nozzles are in communication with the distributor.
5. The industrial plant for the production of fluorophosgene according to claim 2, characterized in that, The length of the nozzles arranged on the outer gas inlet areas is smaller than that of the nozzles arranged on the inner gas inlet areas.
6. The industrial plant for the production of fluorophosgene according to claim 1, characterized in that, The first gas inlet pipe, the distributor and the multiple groups of nozzles with different lengths are used to introduce CO.
7. The industrial plant for the production of fluorosarhcnic acid according to any one of claims 1-6, characterized in that, The second gas inlet mechanism is in communication with the reaction chamber and is used to introduce fluorine gas. The gas outlet mechanism is in communication with the reaction chamber and is used to lead out the reacted gas.
8. The industrial plant for the production of fluorophosgene according to claim 7, characterized in that, The nozzles are provided with three groups of nozzles with increasing lengths, namely outer nozzles, middle nozzles and inner nozzles.
9. The industrial plant for the production of fluorosarhcnic acid according to any one of claims 1-6, characterized in that, The distributor is provided with outer gas inlet areas, middle gas inlet areas and inner gas inlet areas from outside to inside.
10. The industrial plant for the production of fluorosarhcnic acid according to any one of claims 1-6, characterized in that, The outer nozzles are arranged in the outer gas inlet areas. The middle nozzles are arranged in the middle gas inlet areas. The inner nozzles are arranged in the inner gas inlet areas. The cross-sectional area of the nozzles is 75%-95% of the cross-sectional area of the first gas inlet pipe. The length of the outer nozzles is 4-6cm. The length of the middle nozzles is 9-11cm. The length of the inner nozzles is 14-16cm. The size of the corresponding nozzle holes of the outer nozzles is 1mm-2mm. The size of the corresponding nozzle holes of the middle nozzles is 2mm-3mm. The size of the corresponding nozzle holes of the inner nozzles is 2mm-4mm. The nozzles are copper nozzles, nickel nozzles or alloy nozzles. The application further relates to a reactor for preparing fluorinated carbon monoxide. The reactor comprises a cooling layer. The cooling layer is arranged outside the reactor. The cooling layer is provided with a heat exchange chamber. The cooling layer is provided with a cooling medium inlet and a cooling medium outlet. The second gas inlet mechanism comprises a second gas inlet pipe. The second gas inlet pipe is arranged on the reactor and is in communication with the bottom of the reaction chamber. The gas outlet mechanism comprises a gas outlet pipe. The gas outlet pipe is arranged on the reactor and is in communication with the top of the reaction chamber.