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CN-224221336-U - Acid precipitation reaction kettle

CN224221336UCN 224221336 UCN224221336 UCN 224221336UCN-224221336-U

Abstract

The utility model discloses an acid precipitation reaction kettle which comprises a reaction unit and an acid adding mechanism, wherein the reaction unit comprises a kettle body, the kettle body is provided with a reaction cavity, a feeding hole and a discharging hole which are communicated with the reaction cavity and can be closed are formed in the kettle body, the acid adding mechanism comprises an acid storage tank, an acid adding pipeline, a blocking piece and a driving assembly, the upper end of the acid adding pipeline is communicated with the acid storage tank, the lower end of the acid adding pipeline stretches into the reaction cavity, the blocking piece is arranged in the reaction cavity, and the driving assembly is connected with the blocking piece and is used for driving the blocking piece to move so as to intermittently block the lower end of the acid adding pipeline. The utility model has the beneficial effects that the speed of adding acid can be reasonably controlled by controlling the speed of driving the blocking piece to move up and down by the driving component, so that the condition of severe reaction caused by too fast acid adding is avoided, and the safety of acid precipitation reaction is ensured.

Inventors

  • WANG ZHIXIANG

Assignees

  • 黄冈斯坦本新材料科技有限公司

Dates

Publication Date
20260512
Application Date
20250429

Claims (10)

  1. 1. An acid out reaction kettle, which is characterized by comprising: The reaction unit comprises a kettle body, wherein the kettle body is provided with a reaction cavity, and a feed inlet and a discharge outlet which are communicated with the reaction cavity and can be closed are formed in the kettle body; The acid adding mechanism comprises an acid storage tank, an acid adding pipeline, a blocking piece and a driving assembly, wherein the upper end of the acid adding pipeline is communicated with the acid storage tank, the lower end of the acid adding pipeline stretches into the reaction cavity, the blocking piece is arranged in the reaction cavity, and the driving assembly is connected with the blocking piece and used for driving the blocking piece to move so that the blocking piece intermittently blocks the lower end of the acid adding pipeline.
  2. 2. The acid precipitation reaction kettle according to claim 1, wherein the reaction unit further comprises a jacket, the jacket is coated on the outer side wall of the kettle body, a cooling cavity is formed between the inner side wall of the jacket and the outer side wall of the kettle body, a cooling medium inlet and a cooling medium outlet which are communicated with the cooling cavity and can be closed are formed in the jacket, the cooling medium inlet is further communicated with the outlet end of the external cooling system, and the cooling medium outlet is further communicated with the reflux end of the external cooling system.
  3. 3. The acid precipitation reaction kettle according to claim 2, wherein the acid adding pipeline comprises an acid inlet pipe, a transfer pipe, a communicating pipe and an acid outlet pipe, the acid inlet pipe is vertically arranged and penetrates through the top surface of the kettle body, the upper end of the acid inlet pipe is communicated with the acid storage tank, the transfer pipe is vertically arranged in the reaction cavity, a first opening and a second opening are formed in the side wall of the transfer pipe, one end of the communicating pipe is communicated with the acid inlet pipe, the other end of the communicating pipe is communicated with the first opening, the acid outlet pipe is arranged in the reaction cavity, one end of the acid outlet pipe is communicated with the second opening, the blocking piece is arranged in the transfer pipe in a sealing sliding mode and can reciprocate between a first position and a second position, when the blocking piece reaches the first position, the first opening and the second opening are communicated, and when the blocking piece reaches the second position, the first opening and the second opening are connected.
  4. 4. The acid precipitation reaction kettle according to claim 3, wherein the communicating pipe is of a bent pipe structure and is provided with a first vertical section and a first horizontal section, the upper end of the first vertical section is communicated with the lower end of the acid inlet pipe, one end of the first horizontal section is communicated with the lower end of the first vertical section, and the other end of the first horizontal section is communicated with the first opening.
  5. 5. The acid precipitation reaction kettle according to claim 3, wherein the acid outlet pipe is of a bent pipe structure and is provided with a second horizontal section and a second vertical section, one end of the second horizontal section is communicated with the second opening, and the upper end of the second vertical section is communicated with the other end of the second horizontal section.
  6. 6. The acid precipitation reaction kettle according to claim 3, wherein the second opening is located above the first opening, the blocking piece is provided with a flow passage, when the blocking piece reaches the first position, the upper end of the flow passage is communicated with the first opening, the lower end of the flow passage is communicated with the second opening, and when the blocking piece reaches the second position, the blocking piece blocks the first opening and the second opening.
  7. 7. The acid out reactor according to claim 6, wherein the flow passage is of a curved configuration.
  8. 8. The acid precipitation reaction kettle according to claim 3, wherein the lower end of the transfer pipe is provided with an opening, the lower end of the plugging piece extends out of the transfer pipe along the opening at the lower end of the transfer pipe, the driving assembly comprises a rotating wheel, a first rotating shaft and a first rotating driving piece, the rotating wheel is arranged below the plugging piece and is abutted to the bottom surface of the plugging piece, the first rotating shaft is horizontally arranged, one end of the first rotating shaft is eccentrically and fixedly connected with the rotating wheel, the other end of the first rotating shaft rotates to penetrate through the kettle body and extends out of the kettle body, and the output end of the first rotating driving piece is connected with the other end of the first rotating shaft and is used for driving the first rotating shaft to rotate around the axis of the first rotating shaft so that the rotating wheel pushes the plugging piece to move up and down.
  9. 9. The acidification reactor of claim 8, wherein the driving assembly further comprises an elastic member, the elastic member is sleeved on the plugging member, the upper end of the elastic member is abutted to the lower end of the transfer tube, and the lower end of the elastic member is abutted to the rotating wheel.
  10. 10. The acidification reactor of claim 9, wherein the elastic member is a spring.

Description

Acid precipitation reaction kettle Technical Field The utility model relates to the technical field of photosensitizer production, in particular to an acid precipitation reaction kettle. Background The photosensitizer is also called a photoinitiator or a photo-curing agent, and is a compound capable of absorbing energy with a certain wavelength in an ultraviolet light region (250-420 nm) or a visible light region (400-800 nm) to generate free radicals, cations and the like so as to initiate polymerization, crosslinking and curing of monomers. The preparation process of the photosensitizer is complex, and a series of equipment such as a reaction kettle, an oxidation kettle, a synthesis kettle, an alkali fusion kettle, a crystallization kettle, a refining kettle, a filter, a centrifuge, a dryer and the like are needed. In the production of photosensitizers, an acid precipitation method is needed, and the basic principle of the acid precipitation method is that certain substances can be converted into a suspension state from a dissolved state under an acidic condition, so that the substances are separated from a solution. Adding diluted hydrochloric acid into a reaction kettle, stirring the solution to uniformly mix the hydrochloric acid and the solution, and separating out the photosensitizer. Because heat or gas can be generated in the process of acid precipitation, the speed of acid addition can not be reasonably controlled in the process of acid precipitation of the photosensitizer by adopting the existing acid precipitation reaction kettle (such as the acid precipitation reaction kettle for 2-ethyl anthraquinone production disclosed in the application number 201922488476.5), and the condition of too fast acid addition is easy to occur, so that severe reaction is initiated, and even explosion or other potential safety hazards can be caused. Disclosure of utility model The utility model aims to overcome the technical defects, and provides an acid precipitation reaction kettle which solves the technical problems that in the acid precipitation process in the prior art, the acid adding speed cannot be reasonably controlled, and severe reaction is easily caused by too fast acid adding. In order to achieve the technical purpose, the technical scheme of the utility model provides an acid precipitation reaction kettle, which comprises the following components: The reaction unit comprises a kettle body, wherein the kettle body is provided with a reaction cavity, and a feed inlet and a discharge outlet which are communicated with the reaction cavity and can be closed are formed in the kettle body; The acid adding mechanism comprises an acid storage tank, an acid adding pipeline, a blocking piece and a driving assembly, wherein the upper end of the acid adding pipeline is communicated with the acid storage tank, the lower end of the acid adding pipeline stretches into the reaction cavity, the blocking piece is arranged in the reaction cavity, and the driving assembly is connected with the blocking piece and used for driving the blocking piece to move so that the blocking piece intermittently blocks the lower end of the acid adding pipeline. Further, the reaction unit further comprises a jacket, the jacket is coated on the outer side wall of the kettle body, a cooling cavity is formed between the inner side wall of the jacket and the outer side wall of the kettle body, a cooling medium inlet and a cooling medium outlet which are communicated with the cooling cavity and can be closed are formed in the jacket, the cooling medium inlet is further communicated with the outlet end of the external cooling system, and the cooling medium outlet is further communicated with the reflux end of the external cooling system. Further, add sour pipeline includes into sour pipe, adapter, communicating pipe and goes out sour pipe, advance sour pipe vertical setting, and run through the top surface of the cauldron body, advance sour upper end of pipe with acid storage tank intercommunication, adapter vertical set up in the reaction chamber, first opening and second opening have been seted up on the lateral wall of adapter, communicating pipe's one end with advance sour pipe intercommunication, communicating pipe's the other end with first opening intercommunication, go out sour pipe set up in the reaction chamber, go out sour pipe's one end with second opening intercommunication, the shutoff piece sealed slip set up in the adapter to can reciprocate between first position and the second position, when the shutoff piece arrives first position, first opening with the second opening intercommunication, when the shutoff piece arrives the second position, first opening with the second opening is disconnected. Further, the communicating pipe is of a bent pipe structure and is provided with a first vertical section and a first horizontal section, the upper end of the first vertical section is communicated with the lower end of the acid inlet p