Feeding equipment for p-benzyl chloride synthesis
Through the design of the kettle cover, feed pipe, valve, vacuum pump and distribution components, the leakage and harmful substance residue problems of the benzyl chloride synthesis feeding equipment were solved, safe and efficient feeding and uniform distribution were achieved, and the safety and efficiency of benzyl chloride synthesis were improved.
Patent Information
- Application Number
- CN202423019205.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-12-09
AI Technical Summary
The existing benzyl chloride synthesis feeding equipment is prone to leakage when adding raw materials, and the harmful substances remaining in the pipeline during secondary feeding cannot be effectively removed, endangering personnel safety.
A feeding device including a kettle cover, a feeding pipe, a valve, an exhaust fan and a distribution component was designed. The sealing valve control and the exhaust fan extracted harmful gases to achieve leakage-free feeding. The harmful substances in the pipeline were removed before the secondary feeding. Combined with the distribution component, uniform distribution was achieved.
Leakage-free feeding is achieved during the synthesis of benzyl chloride, ensuring the safety of operators and improving feeding efficiency and reaction effect.
Smart Images
Figure CN223404880U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of chemical industry, and particularly relates to a feeding device for synthesizing benzyl chloride. Background Art
[0002] Benzyl chloride is a colorless, transparent liquid that is flammable and has a strong, pungent odor. Benzyl chloride is primarily used in the production of plasticizers, synthetic aromatics, benzyl penicillin, the pesticide chlorpyrifos, and triphenylmethane dyes. It is toxic, strongly irritating to mucous membranes, and has a tear-inducing effect. High concentrations can have a paralyzing effect. Production must be sealed to eliminate any escaping, bubbling, dripping, or leaking. Hydrochloric acid is recovered by absorbing tail gas with water. Operators must wear protective gear. Due to the unique properties of benzyl chloride, the following drawbacks exist in the feed equipment used to add the raw materials required for benzyl chloride synthesis during its synthesis:
[0003] Because benzyl chloride has a strong pungent odor and is toxic during the synthesis process, it must not leak during the production process. When feeding the raw materials, the synthesis tank must be connected to the feeding part, which can easily lead to leakage. Therefore, conventional feeding equipment cannot meet the requirements and must be able to ensure sealing and leak-free feeding.
[0004] Secondly, the feeding is not a one-time feeding. Different auxiliary materials need to be added in different reaction time periods. Even if the sealing of the feeding port is guaranteed during the first feeding, it still needs to be opened during the second feeding. Then there must be synthetic products left in the feeding pipeline. If it is not handled, it will still endanger the health of the surrounding workers. Therefore, it is necessary to deal with the harmful substances in the feeding pipeline before the second feeding. Utility Model Content
[0005] The purpose of the utility model is to provide a feeding device for the synthesis of benzyl chloride. By arranging a kettle cover, a feeding pipe, a first valve, a second valve, and an air pump, the utility model solves the problems that conventional feeding equipment lacks a leak-proof sealed feeding function and that harmful substances remaining in the pipeline during secondary feeding and replenishing cannot be removed, which easily endangers the safety of external personnel.
[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:
[0007] The utility model is a feeding device for the synthesis of benzyl chloride, comprising a kettle cover, a feed pipe, an exhaust fan and a material distribution component. Two symmetrically distributed feed pipes are fixed through the kettle cover, and an exhaust fan is fixed on the upper end of the kettle cover in the area between the two feed pipes; a material distribution component is arranged below the kettle cover;
[0008] A feed hopper is fixed through the top of the feed pipe, a gourd-shaped transfer area is provided in the middle area of the feed pipe, a valve 1 is fixed on the feed pipe above the gourd-shaped transfer area, and a valve 2 is fixed on the feed pipe below the gourd-shaped transfer area;
[0009] Two exhaust pipes are fixed to the exhaust end of the exhaust fan, and the ends of the two exhaust pipes away from the exhaust fan are respectively connected to the inside of the two gourd-shaped transfer areas.
[0010] Furthermore, the second valve on the feed pipe, the gourd-shaped transfer area, the first valve and the feed hopper are all located above the kettle cover.
[0011] Furthermore, an exhaust pipe is fixedly passed through the exhaust port of the vacuum pump.
[0012] Furthermore, two inclined and symmetrically distributed material guide slides are fixed in the inner cavity of the kettle cover, and the lower part of the material feeding pipe passes through the kettle cover and faces into the material guide slides.
[0013] Furthermore, the material distribution assembly includes a material distribution hopper with an inverted truncated cone structure and a material distribution cone located below the material distribution hopper. The interior of the material distribution hopper is hollow, and the upper and lower ends of the material distribution hopper are both open. The inner diameter of the upper port of the material distribution hopper is larger than the inner diameter of the lower port.
[0014] Furthermore, connecting rods distributed in a circular array are fixed between the distribution cone and the outer curved surface of the distribution hopper, symmetrically distributed suspension rods are fixed on the upper port of the distribution hopper, and the tops of the suspension rods are fixed on the inner top surface of the kettle cover.
[0015] Furthermore, there is a gap between the lower port of the material distribution hopper and the upper curved surface of the material distribution cone, and the upper part of the material distribution cone is arranged in a spherical head shape.
[0016] The utility model has the following beneficial effects:
[0017] The utility model solves the problem that conventional feeding equipment lacks a leak-free sealed feeding function by arranging a kettle cover, a feeding pipe, a first valve, and a second valve. In the synthesis reaction of benzyl chloride, various raw materials, auxiliary materials, etc. need to be added, but harmful substances will be generated during the reaction, so sealed feeding is required. First, the two feeding pipes can be used at the same time, and different auxiliary materials can also be added to increase the efficiency of the feeding operation. When feeding, the second valve is first closed, and the first valve is opened to input the raw materials from the feeding hopper until they are temporarily stored in the gourd-shaped transfer area. Then the first valve is closed and the second valve is opened. At this time, the materials in the gourd-shaped transfer area will fall from the feeding pipe, enter the distribution assembly through the material guide slide, and then be evenly distributed in the synthesis kettle through the distribution assembly. Then the second valve is closed to realize the sealed feeding operation.
[0018] The utility model solves the problem that harmful substances remaining in the pipeline cannot be removed during secondary feeding and replenishing, which easily endangers the safety of external personnel by arranging an exhaust fan; before the secondary feeding, because during the primary feeding, toxic substances will exist in the inner cavity of the feeding pipe between valve one and valve two, the exhaust fan is activated at this time to extract the harmful gas inside the gourd-shaped transfer area and discharge it from the exhaust pipe to the corresponding processing equipment, so as to avoid the leakage of toxic gas caused by directly opening valve one, and after the gourd-shaped transfer area is vacuumed, the secondary feeding operation is carried out.
[0019] The utility model increases the function of uniform material distribution by arranging a material distribution component. The materials entering from the two feeding pipes are transported to the material distribution hopper through the material guide slide, slide down along the inner wall of the material distribution hopper, and slide down from the gap between the material distribution hopper and the material distribution round table until they fall into the corresponding synthesis reactor in a large area, and the phenomenon of large amounts of added auxiliary materials being piled up will not occur. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.
[0021] Figure 1 A perspective view of a feeding device for the synthesis of benzyl chloride;
[0022] Figure 2 It is a three-dimensional diagram after the kettle cover is cut away;
[0023] Figure 3 A bottom view of a feeding device for the synthesis of benzyl chloride;
[0024] Figure 4 This is a cross-sectional view of the feed pipe;
[0025] Figure 5 This is the structural diagram of the fabric component;
[0026] Figure 6 This is a cross-sectional view of the connection between the material hopper and the material cone.
[0027] Reference numerals:
[0028] 1. Kettle cover; 101. Material guide slide; 2. Feed pipe; 201. Feed hopper; 202. Valve 1; 203. Gourd-shaped transfer area; 204. Valve 2; 3. Vacuum pump; 301. Vacuum pipe; 302. Exhaust pipe; 4. Material distribution assembly; 401. Material distribution hopper; 402. Material distribution cone; 403. Hanging rod; 404. Connecting rod. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.
[0030] See also Figure 1-6 As shown, the utility model is a feeding device for the synthesis of benzyl chloride, comprising a kettle cover 1, a feed pipe 2, an air pump 3 and a distribution assembly 4. Two symmetrically distributed feed pipes 2 are fixed through the kettle cover 1, and an air pump 3 is fixed to the upper end of the kettle cover 1 in the area between the two feed pipes 2; a distribution assembly 4 is provided below the kettle cover 1;
[0031] The feed pipe 2 is used to add the materials required for the synthesis of benzyl chloride. The reactor cover 1 is installed on the synthesis reactor. The exhaust fan 3 is used to extract harmful gases in the gourd-shaped transfer area 203 to prevent leakage during feeding. The distribution component 4 can evenly distribute the materials introduced from the feed pipe 2 so that they fall into the synthesis reactor over a large area instead of being concentrated at a certain point, thereby increasing the reaction area and accelerating the reaction efficiency.
[0032] A feed hopper 201 is fixed through the top of the feed pipe 2, a gourd-shaped transfer area 203 is provided in the middle area of the feed pipe 2, a valve 1 202 is fixed on the feed pipe 2 above the gourd-shaped transfer area 203, and a valve 2 204 is fixed on the feed pipe 2 below the gourd-shaped transfer area 203;
[0033] When feeding, first close valve 204 and open valve 1 202 to input the raw materials from the feed hopper 201 until they are temporarily stored in the gourd-shaped transfer area 203. Then close valve 1 202 and open valve 2 204. At this time, the materials in the gourd-shaped transfer area 203 will fall from the feed pipe 2. When there is no material in the gourd-shaped transfer area 203, close valve 204 to complete the sealed feeding operation.
[0034] Two exhaust pipes 301 are fixed to the exhaust end of the exhaust fan 3, and the ends of the two exhaust pipes 301 away from the exhaust fan 3 are connected to the inside of the two gourd-shaped transfer areas 203 respectively;
[0035] Before the secondary feeding, because there are some harmful gases produced by the synthesis reaction inside the gourd-shaped transfer area 203, it is necessary to use the vacuum pump 3 to extract the gas in the gourd-shaped transfer area 203 through the vacuum pipe 301 to avoid leakage of harmful gases when the valve 202 is opened again.
[0036] The second valve 204 on the feed pipe 2, the gourd-shaped transfer area 203, the first valve 202 and the feed hopper 201 are all located above the kettle cover 1; the feeding operation can be controlled outside the kettle cover 1.
[0037] An exhaust pipe 302 is also fixed through the exhaust port of the vacuum pump 3; the gas extracted by the vacuum pump 3 through the exhaust pipe 301 is discharged to the corresponding processing equipment through the exhaust pipe 302 to avoid leakage.
[0038] Two inclined and symmetrically distributed material guide slides 101 are fixed in the inner cavity of the kettle cover 1. The lower part of the feed pipe 2 passes through the kettle cover 1 and faces into the material guide slides 101.
[0039] The material entering through the feed pipe 2 is finally discharged obliquely through the material guide chute 101 and enters the material distribution component 4.
[0040] The material distribution assembly 4 includes a material distribution hopper 401 with an inverted truncated cone structure and a material distribution cone 402 located below the material distribution hopper 401. The interior of the material distribution hopper 401 is hollow, and both the upper and lower ends of the material distribution hopper 401 are open. The inner diameter of the upper end of the material distribution hopper 401 is larger than the inner diameter of the lower end.
[0041] Connecting rods 404 arranged in a circular array are fixed between the distribution cone 402 and the outer curved surface of the distribution hopper 401. A symmetrically distributed suspension rod 403 is fixed to the upper end of the distribution hopper 401, and the top of the suspension rod 403 is fixed to the inner top surface of the kettle cover 1.
[0042] There is a gap between the lower port of the material distribution hopper 401 and the upper curved surface of the material distribution cone 402, and the upper part of the material distribution cone 402 is spherical.
[0043] The distribution hopper 401 is fixed to the inner top of the kettle cover 1 through the suspension rod 403, and the outside of the distribution hopper 401 is connected to the distribution cone 402 through the connecting rod 404. The material is transported into the distribution hopper 401 through the distribution chute, impacts the ball head on the top of the distribution cone 402, scatters, and passes through the gap between the distribution hopper 401 and the distribution cone 402 to achieve uniform distribution.
[0044] The specific working principle of the present invention is as follows: first, the reactor cover 1 is placed on the synthesis reactor. When feeding for the first time, the valve 204 is closed first, and the valve 1 202 is opened to input the raw materials from the feed hopper 201 until they are temporarily stored in the gourd-shaped transfer area 203. Then, the valve 1 202 is closed and the valve 2 204 is opened. At this time, the material in the gourd-shaped transfer area 203 will fall from the feed pipe 2. When there is no material in the gourd-shaped transfer area 203, the valve 2 204 is closed. Then, the material entering through the feed pipe 2 is transported to the distribution hopper 401 through the distribution slide and impacts the distribution table 40. 2, spreads out, passes through the gap between the distribution hopper 401 and the distribution cone 402, and is evenly distributed over a large area in the synthesis reactor; before the secondary feeding, because the opening of the second valve 204 during the primary feeding will connect the gourd-shaped transfer area 203 with the synthesis reactor, some harmful gases generated by the synthesis reaction are present. At this time, the exhaust fan 3 is activated to extract the harmful gases inside the gourd-shaped transfer area 203 and discharge them from the exhaust pipe 302 to the corresponding processing equipment. After the gourd-shaped transfer area 203 is vacuumed, the secondary feeding operation is carried out. The secondary feeding steps are the same as the primary feeding operation.
[0045] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions described in the aforementioned embodiments, any equivalent replacement of some of the technical features therein, and any modification, equivalent replacement, and improvement made are within the scope of protection of the present invention.
Claims
1. A feeding device for the synthesis of benzyl chloride, comprising a kettle cover (1), a feeding pipe (2), an air pump (3) and a material distribution component (4), characterized in that: Two symmetrically distributed feed pipes (2) are fixed through the inside of the kettle cover (1), and an air extractor (3) is fixed to the upper end of the kettle cover (1) in the area between the two feed pipes (2); a material distribution assembly (4) is provided below the kettle cover (1); A feed hopper (201) is fixed through the top of the feed pipe (2), a gourd-shaped transfer area (203) is provided in the middle area of the feed pipe (2), a valve 1 (202) is fixed on the feed pipe (2) above the gourd-shaped transfer area (203), and a valve 2 (204) is fixed on the feed pipe (2) below the gourd-shaped transfer area (203); Two exhaust pipes (301) are fixed to the exhaust end of the exhaust fan (3), and the ends of the two exhaust pipes (301) away from the exhaust fan (3) are connected to the inside of the two gourd-shaped transfer areas (203) respectively.
2. A feeding device for the synthesis of benzyl chloride according to claim 1, characterized in that: The second valve (204), the gourd-shaped transfer area (203), the first valve (202) and the feed hopper (201) on the feed pipe (2) are all located above the kettle cover (1).
3. A feeding device for the synthesis of benzyl chloride according to claim 1, characterized in that: An exhaust pipe (302) is also fixedly passed through the exhaust port of the air pump (3).
4. A feeding device for the synthesis of benzyl chloride according to claim 1, characterized in that: Two inclined and symmetrically distributed material guide slides (101) are fixed in the inner cavity of the kettle cover (1), and the lower part of the feed pipe (2) passes through the kettle cover (1) and faces into the material guide slides (101).
5. A feeding device for the synthesis of benzyl chloride according to claim 1, characterized in that: The material distribution assembly (4) comprises a material distribution hopper (401) with an inverted truncated cone structure and a material distribution cone (402) located below the material distribution hopper (401). The interior of the material distribution hopper (401) is hollow, and the upper and lower ends of the material distribution hopper (401) are both open. The inner diameter of the upper end of the material distribution hopper (401) is larger than the inner diameter of the lower end thereof.
6. A feeding device for the synthesis of benzyl chloride according to claim 5, characterized in that: Connecting rods (404) distributed in a ring array are fixed between the outer curved surfaces of the distribution cone (402) and the distribution hopper (401), symmetrically distributed suspension rods (403) are fixed to the upper end of the distribution hopper (401), and the tops of the suspension rods (403) are fixed to the inner top surface of the kettle cover (1).
7. A feeding device for the synthesis of benzyl chloride according to claim 6, characterized in that: There is a gap between the lower port of the material distribution hopper (401) and the upper curved surface of the material distribution cone (402), and the upper portion of the material distribution cone (402) is arranged in a spherical head shape.