CN108568049B - Processing equipment for amplifying and synthesizing decontaminating agent and processing technology thereof - Google Patents
Processing equipment for amplifying and synthesizing decontaminating agent and processing technology thereof Download PDFInfo
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- CN108568049B CN108568049B CN201810623046.7A CN201810623046A CN108568049B CN 108568049 B CN108568049 B CN 108568049B CN 201810623046 A CN201810623046 A CN 201810623046A CN 108568049 B CN108568049 B CN 108568049B
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Abstract
The invention discloses processing equipment for amplifying and synthesizing a decontaminating agent and a processing technology thereof, and relates to the technical field of developing and producing the decontaminating agent. The processing technology comprises the steps of reacting raw materials in a reaction kettle, centrifuging and washing the raw materials in a centrifuge, drying, crushing and screening the raw materials, then placing the product into a coating machine for coating, and drying and screening the coated product to obtain the final product. The invention is suitable for large-scale production, has simple operation, and the produced product has no toxicity, high efficiency, wide application and no pollution to the environment.
Description
Technical Field
The invention relates to the technical field of development and production of a decontaminating agent, in particular to processing equipment for amplifying and synthesizing the decontaminating agent and a processing technology thereof.
Background
The decontamination technology has an important role in daily life, and a rapid, efficient and convenient decontamination technology is always valued in all countries of the world, so that research and application of the decontamination agent are continuously developed at home and abroad, and research reports on the decontamination agent are also endless. The traditional adsorption type decontaminating agent generally has stronger toxic and harmful pollutant adsorption capability, but has the defects of slow degradation speed, incomplete degradation, strong corrosiveness, secondary contamination, environmental pollution and the like in the toxic and harmful pollutant detoxification adsorption process, researches on adsorption reaction type decontaminating materials with broad spectrum, high efficiency, low corrosion and environmental friendliness, and has urgent requirements in the decontamination field.
Aiming at the current situation, through a great deal of basic research and continuous fumbling in the early stage, the self-innovating and developing a decontaminating agent with the obvious advantages of high-efficiency decontamination capability, wide application, no pollution to the environment, strong adaptability to the environment temperature and the like and production equipment of the decontaminating agent.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides processing equipment and processing technology for amplifying and synthesizing a decontaminating agent.
The invention solves the technical problems, and adopts the technical proposal that the invention provides processing equipment for amplifying and synthesizing a decontaminating agent, which comprises: the device comprises a reaction kettle, a liquid dropping tank communicated with the top end of the reaction kettle, a centrifugal machine communicated with the bottom end of the reaction kettle, a first dryer associated with the centrifugal machine, a pulverizer associated with the first dryer, a first sieving machine associated with the pulverizer, a coating machine associated with the first sieving machine, a second dryer associated with the coating machine and a second sieving machine associated with the second dryer.
Preferably, the reaction kettle and the liquid dropping tank are connected with the controller, the reaction kettle is provided with a stirrer and a first heater, the stirrer comprises a stirring piece arranged in the reaction kettle and a stirring motor arranged outside the reaction kettle, the stirring motor drives the stirring piece to rotate, and the controller controls the dropping speed of the liquid dropping tank, the stirring speed of the stirrer, the reaction time of the reaction kettle and the heating temperature of the first heater. The raw materials in the reaction kettle can be fully and uniformly mixed by stirring before the hydrogen peroxide is added dropwise, and the reaction can be more uniform, rapid and sufficient by stirring when the hydrogen peroxide is added dropwise, so that the yield of the MMPP is ensured.
Preferably, the centrifuge is a screen centrifuge.
Preferably, the centrifuge comprises a body machine, a first control panel arranged outside the body machine, a cleaning spray head arranged at the top of the body machine and a first liquid inlet tank communicated with the cleaning spray head, wherein the control panel controls the rotating speed of the body machine, the flow of the cleaning spray head, the running time and the idle time of the periodic running of the cleaning spray head. The centrifugal machine is arranged, so that the cleaning and the filtering can be directly finished in the centrifugal machine, the cleaning and the centrifugal filtering can be carried out firstly and then, and the centrifugal filtering can be carried out simultaneously, and the cost of adding a filter can be saved in both cases, and meanwhile, the operation is simpler and more convenient, the time is saved, and the waste caused by repeated transfer can be avoided; when centrifugal filtration is carried out while cleaning, the cleaning spray head adopts the periodic operation, so that on one hand, the work load of the centrifugal machine can be reduced, and meanwhile, the cleaning effect can be improved, and on the other hand, the unbalance of the longitudinal distribution of the solvent can enable the cleaning to be more thorough. The rotating speed of the body machine refers to a component used for rotating centrifugal filtration in the body machine, and the shell of the body machine does not rotate.
Preferably, the coating machine comprises a frame, a pan body arranged above the frame, a liquid spraying nozzle for spraying liquid in the pan body, a second heater for heating the pan body, and a second liquid inlet tank communicated with the liquid spraying nozzle, wherein the frame is provided with a second control panel and a fixing seat, the fixing seat is provided with a motor for driving the pan body to rotate, the second control panel controls the heating temperature of the second heater, the driving speed of the motor and the liquid spraying, stopping and spraying quantity of the liquid spraying nozzle, and the second control panel controls the liquid spraying nozzle to periodically operate. The liquid spraying nozzle is connected to the frame, and the liquid spraying nozzle periodically runs to ensure that the coating utilization rate is high on one hand and the coating uniformity is good on the other hand. And the subsequent cooling time and drying time can be saved.
Preferably, the pot body comprises an inner pot body, an outer pot body and an air part between the inner pot body and the outer pot body, wherein convex ribs are arranged on the inner wall of the inner pot body, and the convex ribs are hollow and communicated with the air part. The second heater sets up on the outer pot body, and set up the air portion and can let the inner pot body be heated evenly, protruding muscle can help stir when the capsule for the capsule is more even, also can be so heated even to a certain extent, but because protruding muscle can not be too high and too much, still have certain deficiency in the aspect of being heated even.
Preferably, the outer pot body is communicated with an inflator, the inner pot body is provided with a plurality of through holes, the through holes are sealed by an elastic membrane, the elastic membrane forms a bulge outwards after being inflated, and the inflator is controlled by the second control panel. When the spraying of the liquid is finished, the second control panel controls the inflator to inflate the air part, and the elastic membrane is upwards protruded due to heating and inflation, so that the semi-finished product of the decontaminating agent is heated more uniformly
Preferably, the outer pot body is provided with an anti-sinking block corresponding to the elastic membrane. Can prevent the poor coating effect caused by the collapse of the elastic membrane due to too much material.
Preferably, the angle between the liquid spraying nozzle and the axis of the pot body is 20-40 degrees.
Preferably, an infusion pump is arranged between the second liquid inlet tank and the liquid spraying nozzle, and the infusion pump is controlled by the second control panel. Providing a suitable spray pressure of the spray nozzle allows for better coating formation.
The invention also aims to provide a processing technology for amplifying and synthesizing the decontaminating agent.
The method comprises the following steps:
s1: 14-16 parts of phthalic anhydride, 1-2 parts of magnesium oxide and 40-50 parts of ethyl acetate are sequentially added into the reaction kettle, and stirred for 2-4 hours at about 25 ℃;
s2: adding 8-10 parts of 30% hydrogen peroxide water solution into the dripping tank, slowly dripping the 30% hydrogen peroxide water solution in the dripping tank into the reaction tank after the reaction tank is stirred for a specified time, heating the reaction solution in the reaction tank to 25-30 ℃ after dripping is finished, and continuously reacting for 3-5 hours, wherein stirring is continuously performed during the period;
s3: after the reaction is finished, the reaction solution enters a centrifuge from the bottom end of the reaction kettle, and is subjected to primary centrifugation to obtain an MMPP white crude product, and the MMPP white crude product is washed and is subjected to secondary centrifugation and filtration in the centrifuge to obtain an MMPP filter cake;
s4: putting the MMPP filter cake into the first dryer, drying at 50-70 ℃, putting into the pulverizer, pulverizing, and screening by the first screening machine to obtain 50-140-mesh qualified particles for later use;
s5: taking 25-30 parts of nano zirconium hydroxide, 1-3 parts of hydroxypropyl methyl cellulose adhesive and 90-110 parts of water, and stirring to prepare uniform suspension for later use;
s6: 50-60 parts of 50-140-mesh MMPP qualified particles are placed into the coating machine, the rotating speed of the coating machine is regulated and kept to be 90-110rpm, and the prepared suspension is sprayed on the surfaces of the MMPP qualified particles to obtain a semi-finished product of the decontaminating agent.
S7: after the suspension is sprayed completely, heating the semi-finished product of the decontaminating agent, cooling to room temperature after heating to 50-70 ℃, transferring the semi-finished product of the decontaminating agent into the second dryer, drying at 50-70 ℃ and screening by the second screening machine to obtain the finished product of the decontaminating agent with 40-140 meshes. Before heating, the inflator is started to inflate the air portion, and the inflation amount is smaller than necessary at best because the heated air expands. When heating and cooling, the pot body continuously rotates. Before entering the second dryer, the semi-finished product of the decontaminating agent is heated to 50-70 ℃ and then cooled to room temperature, so that some moisture on the surface of the semi-finished product of the decontaminating agent can be removed, and the conditions of falling and non-uniformity caused by too much moisture on the surface of the semi-finished product of the decontaminating agent and insufficient compactness of coating during transfer are prevented.
Preferably, in S3, the MMPP white crude product is washed with ethyl acetate, and the centrifugate of the primary centrifugation and the secondary centrifugation is recovered. The ethyl acetate is used for washing the MMPP white crude product, on one hand, no redundant impurities can be introduced, on the other hand, the centrifugate after secondary centrifugation and primary centrifugation can be recovered and treated together, and the ethyl acetate obtained after treatment can be used as a solvent newly, so that the recycling can be achieved, and the treatment cost can be saved.
Preferably, the secondary centrifugation and washing are performed simultaneously in the centrifuge.
Preferably, during washing, the washing liquid periodically washes the MMPP white crude product, wherein the periodic washing comprises liquid spraying and liquid stopping, the liquid spraying time is 3-5min, the liquid spraying is stopped for 1-3min, and the periodic washing is stopped after 5-10 times. When spraying liquid and stopping spraying liquid, the centrifugal machine is operated, so that on one hand, the work load of the centrifugal machine can be reduced, and meanwhile, the washing effect is improved, and on the other hand, the imbalance of the longitudinal distribution of the solvent can enable the washing to be more thorough.
Preferably, in S6, the suspension is uniformly sprayed on the surfaces of the MMPP qualified particles in an atomization mode, and after each 3-8min of spraying, the suspension is stopped for 0.5-1.5 min until the suspension is sprayed. The periodic spraying can make the utilization ratio of the coating high on one hand, and on the other hand can make the homogeneity of coating good, can save subsequent cooling time and drying time moreover.
Preferably, in S4, except for obtaining MMPP qualified particles with 50-140 meshes, granulating the obtained MMPP powder with more than 140 meshes, transferring the MMPP particles with less than 50 meshes into a pulverizer for pulverizing again, and then placing the MMPP after granulation and pulverization into a first sieving machine for sieving to obtain the MMPP qualified particles with 50-140 meshes. If the production is continued, the above-mentioned operation may be circulated, and if the production amount is small or the number of times of production is small, whether or not the above-mentioned operation is performed may be selected according to the actual economical circumstances.
The invention has the following beneficial effects: the invention can provide equipment support for realizing mass production of the adsorption reaction type decontaminating agent, the decontaminating agent inner core and the coating produced by the invention have uniform component distribution, large specific surface area and easy decontamination with toxic and harmful pollutants, and the coating is tightly packed and uniform, so that the inner core can be prevented from reacting after being exposed to influence the decontamination effect, and the decontaminating agent coating produced by the equipment can quickly decontaminate toxic and harmful pollutants through hydrolysis reaction to generate a non-toxic or low-toxic hydrolysate; meanwhile, the toxic and harmful pollutant liquid drops are absorbed on the surface of the decontaminating agent and then permeate into the inner core, and the core material decontaminates the toxic and harmful pollutant liquid drops through oxidation reaction to generate a non-toxic or low-toxic oxidation product.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural diagram of a centrifuge;
FIG. 3 is a schematic structural view of a coating machine;
FIG. 4 is a schematic diagram of the structure of the coating machine before heating and inflating;
FIG. 5 is a schematic diagram of the structure of the coating machine after heating and air inflation.
Detailed Description
The following are specific examples of the present invention, and the technical solutions of the present invention are further described, but the present invention is not limited to these examples.
Example 1:
the processing equipment for the enlarged synthesis of the decontaminating agent as shown in fig. 1 to 3 comprises a reaction kettle 1, a liquid dropping tank 2 communicated with the top end of the reaction kettle 1, a centrifugal machine 3 communicated with the bottom end of the reaction kettle 1, a first dryer 4a associated with the centrifugal machine 3, a pulverizer 5 associated with the first dryer 4a, a first sieving machine 6a associated with the pulverizer 5, a coating machine 7 associated with the first sieving machine 6a, a second dryer 4b associated with the coating machine 7 and a second sieving machine 6b associated with the second dryer 4 b. The related devices are not communicated with each other, but the materials are transferred by an external machine or manually.
The reaction kettle 1 and the liquid dropping tank 2 are connected with the controller 8, the reaction kettle 1 is provided with a stirrer 11 and a first heater 12, the stirrer 11 comprises a stirring piece 111 arranged in the reaction kettle 1 and a stirring motor 121 arranged outside the reaction kettle 1, and the stirring motor 121 drives the stirring piece 111 to rotate. The hydrogen peroxide is stirred before being added dropwise, the raw materials in the reaction kettle can be fully and uniformly mixed by stirring, and the reaction is more uniform, rapid and sufficient by stirring when the hydrogen peroxide is added dropwise, so that the yield is ensured.
The controller 8 controls the dropping speed of the dropping liquid tank 2, the stirring speed of the stirrer 11, the reaction time of the reaction kettle 1, and the heating temperature of the first heater 12.
The centrifuge 3 is a screen centrifuge.
The centrifuge 3 comprises a body machine 31, a first control panel 32 arranged outside the body machine 31, a cleaning nozzle 33 arranged at the top of the body machine 31 and a first liquid inlet tank 34 communicated with the cleaning nozzle 33. The centrifugal machine is arranged in the way, the cleaning and the filtering can be directly finished in the centrifugal machine, the cleaning and the centrifugal filtering can be performed firstly and then, the centrifugal filtering can be performed simultaneously, the cost of adding a filter can be saved in both cases, the operation is simpler and more convenient, the time is saved, and the waste caused by repeated transfer can be avoided.
The first control panel 32 controls the rotational speed of the main body machine 31, the flow rate of the cleaning nozzle 33, and the running time and the idle time of the periodic running of the cleaning nozzle 33. When centrifugal filtration is carried out while cleaning, the cleaning spray head adopts the periodic operation, so that the work load of the centrifugal machine can be reduced, and the unbalance of the longitudinal distribution of the solvent can enable the cleaning to be more thorough.
The coating machine 7 comprises a frame 71, a pan body 72 arranged above the frame 71, a liquid spraying nozzle 73 for spraying liquid in the pan body 72, a second heater for heating the pan body 72 and a second liquid inlet tank 74 communicated with the liquid spraying nozzle 73, wherein the frame 71 is provided with a second control panel 711 and a fixed seat 713, the fixed seat 713 is provided with a motor 712 for driving the pan body 72 to rotate, the second control panel 711 controls the heating temperature of the second heater, the driving speed of the motor 712 and the liquid spraying, stopping and spraying quantity of the liquid spraying nozzle 73, and the control panel 711 controls the liquid spraying nozzle 73 to perform periodic operation. The liquid spraying nozzle is connected to the frame, and the liquid spraying nozzle periodically runs to ensure that the coating utilization rate is high on one hand and the coating uniformity is good on the other hand. And the subsequent cooling time and drying time can be saved.
Preferably, the pot 72 includes an inner pot 721, an outer pot 722, and an air part 723 between the inner pot 721 and the outer pot 722, wherein ribs 7211 are provided on an inner wall of the inner pot 721, and the ribs 7211 are hollow and communicate with the air part 723. The second heater sets up on the outer pot body, and set up air portion can let the inner pot body be heated evenly, and protruding muscle can help stir when the capsule for the capsule is more even, also can be so heated even to a certain extent, but because protruding muscle can not be too high and too much can influence the capsule rate of capsule, so the capsule rate of capsule still has certain lack in the aspect of being heated even.
The outer pot 722 is communicated with an inflator, the inner pot 721 is provided with a plurality of through holes 7212, the through holes 7212 are sealed by an elastic membrane 7213, the elastic membrane 7213 forms a bulge outwards after being inflated, and the inflator is controlled by the second control panel 711. When the spraying of the liquid is finished, the second control panel controls the inflator to inflate the air part, and the elastic membrane is upwards protruded due to heating and inflation, so that the semi-finished product of the decontaminating agent is heated more uniformly
The outer pot 722 is provided with a dent prevention block 7221 corresponding to the elastic membrane 7213. Can prevent the poor coating effect caused by the collapse of the elastic membrane due to too much material.
The angle between the liquid spray nozzle 73 and the axis of the pot 72 is 20-40 degrees.
An infusion pump is arranged between the second liquid inlet tank 74 and the liquid spray nozzle 73, and the infusion pump is controlled by the second control panel 711. Providing a suitable spray pressure of the spray nozzle allows for better coating formation.
With the aid of the processing equipment of the embodiment, a processing technology for amplifying and synthesizing a decontaminating agent is provided, and the processing technology comprises the following steps:
s1: 14 parts of phthalic anhydride, 2 parts of magnesium oxide and 50 parts of ethyl acetate are added in sequence to a reaction kettle 1, and stirred for 2 hours at about 25 ℃. The first heater is controlled by the controller to heat to about 25 ℃ and the stirrer is controlled to stir for 2 hours.
S2: 8 parts of 30% hydrogen peroxide aqueous solution is added into the dripping tank 2, after the reaction kettle 1 is stirred for a prescribed time, the 30% hydrogen peroxide aqueous solution in the dripping tank 2 is slowly dripped into the reaction kettle 1, after the dripping is finished, the reaction solution in the reaction kettle 1 is heated to 30 ℃ and then is continuously reacted for 5 hours, and stirring is continuously carried out during the period. The controller controls the dropping speed of the dropping liquid tank, controls the first heater to heat the reaction liquid to 30 ℃ and controls the stirrer to continuously stir until the reaction is finished.
S3: after the reaction is finished, the reaction liquid enters a centrifuge from the bottom end of the reaction kettle 1, and is centrifuged once to obtain a white MMPP crude product, and the white MMPP crude product is washed and is filtered in the centrifuge 3 for secondary centrifugation to obtain an MMPP filter cake. The centrifugal machine is a filtering type centrifugal machine, the washing and filtering effects can be achieved, and after the washing liquid is placed in the first liquid inlet tank, the MMPP white crude product is sprayed through the cleaning nozzle.
S4: and (3) putting the MMPP filter cake into a first dryer 4a, drying at 70 ℃, putting into a pulverizer 5, pulverizing, and screening by a first screening machine 6a to obtain 50-140-mesh MMPP qualified particles for later use.
S5: taking 25 parts of nano zirconium hydroxide, 1 part of hydroxypropyl methylcellulose adhesive and 90 parts of water, and stirring to prepare a uniform suspension for later use. The second liquid inlet tank can be communicated with the stirring tank through a pipeline after the stirring tank is arranged, and the stirring tank can also be directly arranged in the second liquid inlet tank.
S6: 50 parts of 50-140-mesh MMPP qualified particles are placed into a coating machine 7, the rotating speed of the coating machine 7 is regulated and kept to be 110rpm, and the prepared suspension is sprayed on the surfaces of the MMPP qualified particles to obtain a semi-finished product of the decontaminating agent. The MMPP qualified particles are placed in a pan body of a coating machine, the rotation speed of the pan body is regulated to be 110rpm by a driving machine, and the suspension is placed in a second liquid inlet tank to spray liquid on the surfaces of the MMPP qualified particles through a liquid spray nozzle. The control panel controls the driving speed of the driving machine.
S7: after the suspension is sprayed completely, heating the semi-finished product of the decontaminating agent, cooling to room temperature after heating to 50 ℃, transferring the semi-finished product of the decontaminating agent into a second dryer 4b, drying at 50 ℃ and screening by a second screening machine 6b to obtain a finished product of the decontaminating agent with 40-140 meshes. The inflator is activated to inflate the air portion prior to heating, and the inflation volume is less than necessary at best because the heated gas expands. When heating and cooling, the pot body continuously rotates. Before entering the second dryer, the semi-finished product of the decontaminating agent is heated to 50 ℃ and then cooled to room temperature, so that some moisture on the surface of the semi-finished product of the decontaminating agent can be removed, and the conditions of falling and non-uniformity caused by too much moisture on the surface of the semi-finished product of the decontaminating agent and insufficient compactness of coating during transfer are prevented.
In addition, in S3, the MMPP white crude product was washed with ethyl acetate, and the centrifugate of the primary centrifugation and the secondary centrifugation was recovered. Ethyl acetate is placed in the first liquid inlet tank, and the ethyl acetate is used for washing the MMPP white crude product, so that on one hand, redundant impurities are not introduced, on the other hand, the centrifugal liquid after secondary centrifugation and primary centrifugation can be recycled and treated together, and the ethyl acetate obtained after treatment can be used as a solvent from a new state, so that the recycling can be achieved, and the treatment cost can be saved.
The secondary centrifugation and washing are performed simultaneously in the centrifuge 3. And (3) during washing, the washing liquid periodically washes the MMPP white crude product, wherein the periodic washing comprises liquid spraying and liquid stopping, the liquid spraying time is 3-5min, the liquid stopping time is 1-3min, and the periodic washing is stopped after 8 times of periodic washing. The first control panel controls the periodic operation and flow of the cleaning spray head and controls the rotating speed of the machine body, and when spraying liquid and stopping spraying liquid, the centrifugal machine is operated, so that on one hand, the work load of the centrifugal machine can be reduced, and on the other hand, the washing effect can be improved, and on the other hand, the unbalance of the longitudinal distribution of the solvent can enable the cleaning to be more thorough.
In S6, the suspension is uniformly sprayed on the surface of the MMPP powder in an atomization mode, and after each spraying time is 3-8min, the spraying is stopped for 0.5-1.5 min until the suspension is sprayed. The second control panel controls the heating temperature of the second heater to the semi-finished product of the decontaminating agent and the periodical operation of the liquid spraying nozzle, and the periodical spraying can enable the coating to be high in utilization rate on one hand and good in uniformity on the other hand, and can save the subsequent cooling time and drying time.
Example 2:
a processing apparatus for the enlarged synthesis of a decontaminating agent as shown in fig. 1 to 3 is the same as that of the embodiment 1 and will not be described again.
With the aid of the processing equipment of the embodiment, a processing technology for amplifying and synthesizing a decontaminating agent is provided, and the processing technology comprises the following steps:
s1: 16 parts of phthalic anhydride, 1 part of magnesium oxide and 40 parts of ethyl acetate were added in this order to the reaction vessel 1, and stirred at about 25℃for 4 hours. The first heater is controlled by the controller to heat to about 25 ℃ and the stirrer is controlled to stir for 4 hours.
S2: 10 parts of 30% hydrogen peroxide aqueous solution is added into the dripping tank 2, after the reaction kettle 1 is stirred for a prescribed time, the 30% hydrogen peroxide aqueous solution in the dripping tank 2 is slowly dripped into the reaction kettle 1, after the dripping is finished, the reaction solution in the reaction kettle 1 is heated to 25 ℃ and then is continuously reacted for 3 hours, and stirring is continuously carried out during the period. The controller controls the dropping speed of the dropping liquid tank, controls the first heater to heat the reaction liquid to 25 ℃ and controls the stirrer to continuously stir until the reaction is finished.
S3: after the reaction is finished, the reaction liquid enters a centrifuge from the bottom end of the reaction kettle 1, and is centrifuged once to obtain a white MMPP crude product, and the white MMPP crude product is washed and is filtered in the centrifuge 3 for secondary centrifugation to obtain an MMPP filter cake. The centrifugal machine is a filtering type centrifugal machine, the washing and filtering effects can be achieved, and after the washing liquid is placed in the first liquid inlet tank, the MMPP white crude product is sprayed through the cleaning nozzle.
S4: and (3) putting the MMPP filter cake into a first dryer 4a, drying at 50 ℃, putting into a pulverizer 5, pulverizing, and screening by a first screening machine 6a to obtain 50-140-mesh MMPP qualified particles for later use.
S5: taking 30 parts of nano zirconium hydroxide, 3 parts of hydroxypropyl methylcellulose adhesive and 110 parts of water, and stirring to prepare a uniform suspension for later use. The second liquid inlet tank can be communicated with the stirring tank through a pipeline after the stirring tank is arranged in the stirring tank, and the stirring tank can also be directly arranged in the second liquid inlet tank.
S6: 60 parts of 50-140-mesh MMPP qualified particles are placed into a coating machine 7, the rotating speed of the coating machine 7 is regulated and kept to be 90rpm, and the prepared suspension is sprayed on the surfaces of the MMPP qualified particles to obtain a semi-finished product of the decontaminating agent. The MMPP qualified particles are placed in a pan body of a coating machine, the rotation speed of the pan body is regulated to 90rpm by a driving machine, and the suspension is placed in a second liquid inlet tank to spray liquid on the surfaces of the MMPP qualified particles through a liquid spray nozzle. The control panel controls the driving speed of the driving machine.
S7: after the suspension is sprayed completely, heating the semi-finished product of the decontaminating agent, cooling to room temperature after heating to 70 ℃, transferring the semi-finished product of the decontaminating agent into a second dryer 4b, drying at 70 ℃, and screening by a second screening machine 6b to obtain a finished product of the decontaminating agent with 40-140 meshes. The inflator is activated to inflate the air portion prior to heating, and the inflation volume is less than necessary at best because the heated gas expands. When heating and cooling, the pot body continuously rotates. Before entering the second dryer, the semi-finished product of the decontaminating agent is heated to 70 ℃ and then cooled to room temperature, so that some moisture on the surface of the semi-finished product of the decontaminating agent can be removed, and the conditions of falling and non-uniformity caused by too much moisture on the surface of the semi-finished product of the decontaminating agent and insufficient compactness of coating during transfer are prevented.
In addition, in S3, the MMPP white crude product was washed with ethyl acetate, and the centrifugate of the primary centrifugation and the secondary centrifugation was recovered. Ethyl acetate is placed in the first liquid inlet tank, and the ethyl acetate is used for washing the MMPP white crude product, so that on one hand, redundant impurities are not introduced, on the other hand, the centrifugal liquid after secondary centrifugation and primary centrifugation can be recycled and treated together, and the ethyl acetate obtained after treatment can be used as a solvent from a new state, so that the recycling can be achieved, and the treatment cost can be saved.
The secondary centrifugation and washing are performed simultaneously in the centrifuge 3. And (3) during washing, the washing liquid periodically washes the MMPP white crude product, wherein the periodic washing comprises liquid spraying and liquid stopping, the liquid spraying time is 3-5min, the liquid stopping time is 1-3min, and the periodic washing is stopped after 5 times of periodic washing. The first control panel controls the periodic operation and flow of the cleaning spray head and controls the rotating speed of the machine body, and when spraying liquid and stopping spraying liquid, the centrifugal machine is operated, so that on one hand, the work load of the centrifugal machine can be reduced, and on the other hand, the washing effect can be improved, and on the other hand, the unbalance of the longitudinal distribution of the solvent can enable the cleaning to be more thorough.
In S6, the suspension is uniformly sprayed on the surface of the MMPP powder in an atomization mode, and after each spraying time is 3-8min, the spraying is stopped for 0.5-1.5 min until the suspension is sprayed. The second control panel controls the heating temperature of the second heater to the semi-finished product of the decontaminating agent and the periodical operation of the liquid spraying nozzle, and the periodical spraying can enable the coating to be high in utilization rate on one hand and good in uniformity on the other hand, and can save the subsequent cooling time and drying time.
Example 3:
a processing apparatus for the enlarged synthesis of a decontaminating agent as shown in fig. 1 to 3 is the same as that of the embodiment 1 and will not be described again.
With the aid of the processing equipment of the embodiment, a processing technology for amplifying and synthesizing a decontaminating agent is provided, and the processing technology comprises the following steps:
s1: 15 parts of phthalic anhydride, 1.5 parts of magnesium oxide and 45 parts of ethyl acetate are added in sequence to a reaction kettle 1, and stirred for 3 hours at about 25 ℃. The first heater is controlled by the controller to heat to about 25 ℃ and the stirrer is controlled to stir for 3 hours.
S2: 9 parts of 30% hydrogen peroxide aqueous solution is added into the dripping tank 2, after the reaction kettle 1 is stirred for a prescribed time, the 30% hydrogen peroxide aqueous solution in the dripping tank 2 is slowly dripped into the reaction kettle 1, after the dripping is finished, the reaction solution in the reaction kettle 1 is heated to 27 ℃ and then is continuously reacted for 4 hours, and stirring is continuously carried out during the period. The controller controls the dropping speed of the dropping liquid tank, controls the first heater to heat the reaction liquid to 27 ℃ and controls the stirrer to continuously stir until the reaction is finished.
S3: after the reaction is finished, the reaction liquid enters a centrifuge from the bottom end of the reaction kettle 1, and is centrifuged once to obtain a white MMPP crude product, and the white MMPP crude product is washed and is filtered in the centrifuge 3 for secondary centrifugation to obtain an MMPP filter cake. The centrifugal machine is a filtering type centrifugal machine, the washing and filtering effects can be achieved, and after the washing liquid is placed in the first liquid inlet tank, the MMPP white crude product is sprayed through the cleaning nozzle.
S4: and (3) putting the MMPP filter cake into a first dryer 4a, drying at 60 ℃, putting into a pulverizer 5, pulverizing, and screening by a first screening machine 6a to obtain 50-140-mesh MMPP qualified particles for later use.
S5: taking 28 parts of nano zirconium hydroxide, 3 parts of hydroxypropyl methylcellulose adhesive and 100 parts of water, and stirring to prepare a uniform suspension for later use. The second liquid inlet tank can be communicated with the stirring tank through a pipeline after the stirring tank is arranged in the stirring tank, and the stirring tank can also be directly arranged in the second liquid inlet tank.
S6: 55 parts of 50-140-mesh MMPP qualified particles are placed into a coating machine 7, the rotating speed of the coating machine 7 is regulated and kept to be 100rpm, and the prepared suspension is sprayed on the surfaces of the MMPP qualified particles to obtain a semi-finished product of the decontaminating agent. The MMPP qualified particles are placed in a pan body of a coating machine, the rotation speed of the pan body is regulated to be 100rpm by a driving machine, and the suspension is placed in a second liquid inlet tank to spray liquid on the surfaces of the MMPP qualified particles through a liquid spray nozzle. The control panel controls the driving speed of the driving machine.
S7: after the suspension is sprayed completely, heating the semi-finished product of the decontaminating agent, cooling to room temperature after heating to 60 ℃, transferring the semi-finished product of the decontaminating agent into a second dryer 4b, drying at 60 ℃, and screening by a second screening machine 6b to obtain a finished product of the decontaminating agent with 40-140 meshes. The inflator is activated to inflate the air portion prior to heating, and the inflation volume is less than necessary at best because the heated gas expands. When heating and cooling, the pot body continuously rotates. Before entering the second dryer, the semi-finished product of the decontaminating agent is heated to 60 ℃ and then cooled to room temperature, so that some moisture on the surface of the semi-finished product of the decontaminating agent can be removed, and the conditions of falling and non-uniformity caused by too much moisture on the surface of the semi-finished product of the decontaminating agent and insufficient compactness of coating during transfer are prevented.
In addition, in S3, the MMPP white crude product was washed with ethyl acetate, and the centrifugate of the primary centrifugation and the secondary centrifugation was recovered. Ethyl acetate is placed in the first liquid inlet tank, and the ethyl acetate is used for washing the MMPP white crude product, so that on one hand, redundant impurities are not introduced, on the other hand, the centrifugal liquid after secondary centrifugation and primary centrifugation can be recycled and treated together, and the ethyl acetate obtained after treatment can be used as a solvent from a new state, so that the recycling can be achieved, and the treatment cost can be saved.
The secondary centrifugation and washing are performed simultaneously in the centrifuge 3. And (3) during washing, the washing liquid periodically washes the MMPP white crude product, wherein the periodic washing comprises liquid spraying and liquid stopping, the liquid spraying time is 3-5min, the liquid stopping time is 1-3min, and the periodic washing is stopped after 10 times. The first control panel controls the periodic operation and flow of the cleaning spray head and controls the rotating speed of the machine body, and when spraying liquid and stopping spraying liquid, the centrifugal machine is operated, so that on one hand, the work load of the centrifugal machine can be reduced, and on the other hand, the washing effect can be improved, and on the other hand, the unbalance of the longitudinal distribution of the solvent can enable the cleaning to be more thorough.
In S6, the suspension is uniformly sprayed on the surface of the MMPP powder in an atomization mode, and after each spraying time is 3-8min, the spraying is stopped for 0.5-1.5 min until the suspension is sprayed. The second control panel controls the heating temperature of the second heater to the semi-finished product of the decontaminating agent and the periodical operation of the liquid spraying nozzle, and the periodical spraying can enable the coating to be high in utilization rate on one hand and good in uniformity on the other hand, and can save the subsequent cooling time and drying time.
In S4, granulating the obtained MMPP powder with more than 140 meshes except for the MMPP qualified particles with 50-140 meshes, transferring the MMPP particles with less than 50 meshes into a pulverizer for pulverizing again, and then placing the granulated and pulverized MMPP into a first sieving machine for sieving to obtain the MMPP qualified particles with 50-140 meshes. If the production is continued, the above-mentioned operation may be circulated, and if the production amount is small or the number of times of production is small, whether or not the above-mentioned operation is performed may be selected according to the actual economical circumstances.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. A processing device for amplifying and synthesizing a decontaminating agent is characterized in that: the device comprises a reaction kettle (1), a liquid dropping tank (2) communicated with the top end of the reaction kettle (1), a centrifugal machine (3) associated with the reaction kettle (1), a first dryer (4 a) communicated with the bottom end of the centrifugal machine (3), a pulverizer (5) associated with the first dryer (4 a), a first sieving machine (6 a) associated with the pulverizer (5), a coating machine (7) associated with the first sieving machine (6 a), a second dryer (4 b) associated with the coating machine (7) and a second sieving machine (6 b) associated with the second dryer (4 b); the reaction kettle (1) and the drip tank (2) are connected with the controller (8), the reaction kettle (1) is provided with a stirrer (11) and a first heater (12), the stirrer (11) comprises a stirring piece (111) arranged in the reaction kettle (1) and a stirring motor (112) arranged outside the reaction kettle (1), the stirring motor (112) drives the stirring piece (111) to rotate, and the controller (8) controls the drip speed of the drip tank (2), the stirring speed of the stirrer (11), the reaction time of the reaction kettle (1) and the heating temperature of the first heater (12); the centrifugal machine (3) is a sieving type centrifugal machine; the centrifugal machine (3) comprises a body machine (31), a first control panel (32) arranged outside the body machine (31), a cleaning spray head (33) arranged at the top of the body machine (31) and a first liquid inlet tank (34) communicated with the cleaning spray head (33), wherein the first control panel (32) controls the rotating speed of the body machine (31), the flow of the cleaning spray head (33) and the running time and the stopping time of the periodic running of the cleaning spray head (33); the coating machine (7) comprises a frame (71), a pan body (72) arranged above the frame (71), a liquid spraying nozzle (73) for spraying liquid in the pan body (72), a second heater for heating the pan body (72) and a second liquid inlet tank (74) communicated with the liquid spraying nozzle (73), the frame (71) is provided with a second control panel (711) and a fixing seat (713), the fixing seat (713) is provided with a motor (712) for driving the pan body (72) to rotate, the second control panel (711) controls the heating temperature of the second heater (74), the driving speed of the motor (712) and the liquid spraying, stopping and spraying quantity of the liquid spraying nozzle (73), and the second control panel (711) controls the liquid spraying nozzle (73) to periodically operate.
2. A process for the enlarged synthesis of a decontaminating agent, which adopts the apparatus for the enlarged synthesis of a decontaminating agent according to claim 1, comprising the steps of:
s1: 14-16 parts of phthalic anhydride, 1-2 parts of magnesium oxide and 40-50 parts of ethyl acetate are sequentially added into the reaction kettle (1), and stirred for 2-4 hours at about 25 ℃;
s2: adding 8-10 parts of 30% hydrogen peroxide water solution into the dropping liquid tank (2), slowly dropping the 30% hydrogen peroxide water solution in the dropping liquid tank (2) into the reaction tank (1) after the reaction tank (1) is stirred for a prescribed time, heating the reaction liquid in the reaction tank (1) to 25-30 ℃ after the dropping is finished, and continuously reacting for 3-5 hours while continuously stirring;
s3: after the reaction is finished, the reaction liquid enters the centrifugal machine (3) from the bottom end of the reaction kettle (1), and is subjected to primary centrifugation to obtain an MMPP white crude product, and the MMPP white crude product is washed and is subjected to secondary centrifugal filtration in the centrifugal machine (3) to obtain an MMPP filter cake;
s4: putting the MMPP filter cake into the first dryer (4 a), drying at 50-70 ℃, putting into the pulverizer (5), pulverizing, and screening (6 a) by the first screening machine to obtain 50-140-mesh MMPP qualified particles for later use;
s5: taking 25-30 parts of nano zirconium hydroxide, 1-3 parts of hydroxypropyl methyl cellulose adhesive and 90-110 parts of water, and stirring to prepare uniform suspension for later use;
s6: 50-60 parts of 50-140-mesh MMPP qualified particles are placed into the coating machine (7), the rotating speed of the coating machine (7) is regulated and kept to be 90-110rpm, and the prepared suspension is sprayed on the surfaces of the MMPP qualified particles to obtain a semi-finished product of the decontaminating agent;
s7: after the suspension is sprayed completely, heating the semi-finished product of the decontaminating agent, cooling to room temperature after heating to 50-70 ℃, transferring the semi-finished product of the decontaminating agent into the second dryer (4 b), drying at 50-70 ℃, and screening by the second screening machine (6 b) to obtain the finished product of the decontaminating agent with 40-140 meshes.
3. A process for the enlarged synthesis of a decontaminating agent according to claim 2, characterized in that: in S3, the MMPP white crude product was washed with ethyl acetate, and the centrifugate of the primary centrifugation and the secondary centrifugation was recovered.
4. A process for the synthesis of a decontaminant according to claim 2 or 3, characterized in that: the secondary centrifugation and washing are carried out simultaneously in the centrifuge (3).
5. The process for amplifying and synthesizing a decontaminating agent according to claim 4, wherein: and (3) during washing, the washing liquid periodically washes the MMPP white crude product, wherein the periodic washing comprises liquid spraying and liquid stopping, the liquid spraying time is 3-5min, the liquid stopping time is 1-3min, and the periodic washing is stopped after 5-10 times.
6. A process for the enlarged synthesis of a decontaminating agent according to claim 2, characterized in that: in S6, the suspension is uniformly sprayed on the surfaces of the MMPP qualified particles in an atomization mode, and after each spraying time is 3-8min, the suspension stops for 0.5-1.5 min until the suspension is sprayed.
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