CN216737608U - Production device for continuously preparing arsenic trioxide - Google Patents
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- CN216737608U CN216737608U CN202220331721.0U CN202220331721U CN216737608U CN 216737608 U CN216737608 U CN 216737608U CN 202220331721 U CN202220331721 U CN 202220331721U CN 216737608 U CN216737608 U CN 216737608U
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Abstract
The utility model relates to the technical field of arsenic trioxide preparation, in particular to a production device and a method for continuously preparing arsenic trioxide from crude arsenic. A production device for continuously preparing arsenic trioxide comprises: the feeding device, the thermal reaction device, the hot air blowing device, the arsenic collecting device, the flue gas treatment device, the induced draft device and the discharging device are connected and controlled by the control device; the outlet of the feeding device is communicated with the bottom inlet of the thermal reaction device, the outlet of the hot air blowing device is communicated with the bottom inlet of the thermal reaction device, the outlet of the thermal reaction device is communicated with the inlet of the arsenic collecting device through a pipeline, the outlet of the arsenic collecting device is communicated with the flue gas treatment device through a pipeline, the outlet of the induced air device is communicated with the inlet of the flue gas treatment device and the top outlet of the arsenic collecting device, and the bottom outlet of the arsenic collecting device is connected with the discharging device. The utility model can continuously and automatically prepare the high-purity arsenic trioxide in large batch.
Description
Technical Field
The utility model relates to the technical field of arsenic trioxide preparation, in particular to a production device for continuously preparing arsenic trioxide from arsenic trioxide coarse materials.
Background
Arsenic trioxide (commonly known as arsenic trioxide) is mainly used in agricultural and coating materials and in pharmaceutical industry as pesticide, rust-removing preservative, chemical preparation, etc. At present, the process technology for separating and refining the high-purity arsenic trioxide by taking the crude arsenic trioxide as the raw material mainly utilizes the characteristic that the arsenic trioxide is easy to sublimate, and impurities (oxides of iron, zinc and the like) in the arsenic trioxide are not sublimated to separate, generally in a vacuum sublimation furnace, controls the sublimation temperature and the condensation temperature, and separates and removes the impurities in the arsenic trioxide, thereby obtaining the high-purity arsenic trioxide. In the conventional preparation method for extracting arsenic by using the existing sublimation method, the purity of the prepared arsenic trioxide is not high, the prepared arsenic trioxide generally only reaches the secondary arsenic trioxide (the content of the arsenic trioxide is about 98 percent), the working environment is severe, and the risk of serious arsenic pollution to the surrounding environment is caused.
For the improvement of the production and purification of arsenic trioxide, the following two technologies exist: a chain strip type process furnace and a steel belt conveying type process furnace. The two production processes are based on the basic principle that the arsenic trioxide coarse materials are conveyed into a process furnace through a belt conveyor, the process furnace is heated and insulated after an inlet is sealed, the arsenic trioxide product smoke is conveyed into a product collecting bin from an outlet at the top of the process furnace, and then the process furnace opening is opened to convey the arsenic trioxide coarse materials into the process furnace again, so that the arsenic trioxide is prepared in a circulating and reciprocating mode.
Although the two production processes improve the production efficiency, the production process has the problems of untight sealing of the process furnace, frequent failure, unstable product quality, high production cost, high labor intensity, ineffective control of environmental pollution, difficulty in long-term work of workers directly participating in production and the like. In addition, the production process can not prepare arsenic trioxide continuously in a large scale and in an automatic mode with low energy consumption, so that the industrial production requirement is difficult to realize, and the requirements of energy conservation, emission reduction and environmental protection are difficult to meet. Therefore, the development of a device for continuously and automatically preparing high-purity arsenic trioxide in large batch by using crude arsenic trioxide (the content of arsenic trioxide is about 96%) as a material is the current research direction.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a production device for preparing arsenic trioxide from arsenic trioxide coarse materials, which is used for continuously preparing high-purity arsenic trioxide from the arsenic trioxide coarse materials by a sublimation method.
In order to achieve the purpose, the utility model provides the following technical scheme:
a production apparatus for continuously preparing arsenic trioxide, comprising: the feeding device, the thermal reaction device, the hot air blowing device, the arsenic collecting device, the flue gas treatment device, the induced draft device and the discharging device are connected and controlled by the control device; the outlet of the feeding device is hermetically communicated with the bottom inlet of the thermal reaction device, the outlet of the hot air blowing device is hermetically communicated with the bottom inlet of the thermal reaction device, the outlet of the thermal reaction device is hermetically communicated with the inlet of the arsenic collecting device through a pipeline, the outlet of the arsenic collecting device is hermetically communicated with the flue gas treatment device through a pipeline, the outlet of the induced air device is hermetically communicated with the inlet of the flue gas treatment device and the top outlet of the arsenic collecting device, and the bottom outlet of the arsenic collecting device is hermetically connected with the discharging device.
Furthermore, the thermal reaction device comprises a vertically arranged boiling reaction furnace and a stirring device vertically arranged at the bottom in the boiling reaction furnace, outlets of the feeding device and the hot air blowing device are respectively communicated with the boiling reaction furnace in a sealing manner, and the feeding device and the hot air blowing device are oppositely arranged at two sides of the boiling reaction furnace.
Furthermore, a plurality of groups of horizontal spoilers are arranged on the inner wall of the upper part of the boiling reaction furnace in a staggered manner.
Further, it includes one-level cooling device and bottom export second grade crystallization collection device, tertiary crystallization collection device, the level four dust arrester installation of sealing connection discharging device respectively to receive the arsenic device, the sealed top entry that communicates second grade crystallization collection device of top export and its export of intercommunication hot reaction unit of the sealed intercommunication of entry of one-level cooling device, the sealed top entry that communicates tertiary crystallization collection device of top export of second grade crystallization collection device, the sealed top entry that communicates level four dust arrester installation of top export of tertiary crystallization collection device, the sealed bottom entry of connecting flue gas processing apparatus of top export of level four dust arrester installation.
Further, second grade crystal collection device, tertiary crystal collection device, level four dust arrester installation are respectively through discharge apparatus sealing connection discharging device, discharge apparatus includes the one-level discharge valve of sealed intercommunication receipts arsenic device, through pipeline and one-level discharge valve sealing connection's second grade discharge valve, second grade discharge valve and discharging device sealing connection.
Furthermore, the hot air blowing device comprises a fan and a heating furnace, an outlet of the fan is hermetically connected with an inlet of the heating furnace, and an outlet of the heating furnace is hermetically communicated with a bottom inlet of the thermal reaction device.
Furthermore, the feeding device and the discharging device are both spiral conveying metering devices.
Compared with the prior art, the utility model has the beneficial effects that:
1. by adopting the technical scheme, the method can be used for preparing the arsenic trioxide from the arsenic trioxide coarse material by using a sublimation method in a continuous and large-batch manner, and can also ensure that the whole preparation system is in a closed state, thereby avoiding potential safety hazards caused by leakage of arsenic trioxide smoke.
2. The feeding device, the thermal reaction device, the hot air blowing device, the arsenic collecting device, the flue gas treatment device, the induced air device and the discharging device are connected and controlled by the control device, so that the automation of the preparation of the arsenic trioxide is realized, the unattended operation is realized, and the device has good popularization and application prospects.
3. In the whole system of the production device, the front end adopts the hot air blowing device to blow air, and the rear end adopts the air inducing device to perform negative pressure air inducing, so that the flowability of substances in the whole production system is accelerated, and the production efficiency is improved.
4. Related equipment such as a feeding device and a discharging device can adopt a spiral conveying metering device, a discharging device can adopt a discharging valve controlled by a servo motor, a hot blowing device can adopt a Roots blower and a heating furnace, an arsenic collecting device can adopt the existing condensation kettle and dust collecting equipment, a flue gas treatment device can adopt a spray tower and a water bath treatment technology, the related equipment and the technology are standardized equipment, the construction of the whole production system is convenient, and the development cost of the system equipment is saved.
5. The thermal reaction device adopts the boiling reaction furnace and the stirring device is hermetically arranged at the bottom of the boiling reaction furnace, so that the thermal reaction is carried out on the arsenic trioxide coarse material, and the arsenic trioxide coarse material is broken up at the same time, thereby avoiding agglomeration and blockage and improving the sublimation reaction efficiency of the arsenic trioxide coarse material; the horizontal spoiler is arranged in the boiling reaction furnace, so that the sufficiency of the sublimation reaction of the arsenic trioxide coarse material is further improved, and the flow speed of the arsenic trioxide smoke is controlled.
6. The discharge device adopts the second-level discharge mechanism, so that firstly, the airtightness of the whole production system can be improved, the arsenic trioxide flue gas is prevented from escaping from the discharge device, secondly, the temporary storage box can be arranged between the two discharge mechanisms, and the discharge device can uniformly discharge after the temporary storage box is full, thereby preventing the discharge device from always running and realizing energy conservation and consumption reduction.
7. The arsenic collecting device adopts a four-stage arsenic collecting mechanism, so that the arsenic collecting efficiency and the arsenic collecting quality are further improved.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of an embodiment of the thermal reaction apparatus of the present invention.
Fig. 3 is an enlarged schematic structural view of a portion of a cross section at a in fig. 2.
Fig. 4 is an enlarged schematic structural view of a cross section of the stirring device at a in fig. 2.
Fig. 5 is an enlarged schematic structural view at B of fig. 1.
In the figure: 1. the device comprises a feeding device, 11, a spiral conveying metering device, 12, a feeding port, 2, a thermal reaction device, 21, a boiling reaction furnace, 211, a combustion chamber, 2111, a cooling pipeline, 212, a heat preservation furnace body, 213, a connecting cylinder body, 22, a stirring device, 221, a motor, 222, a stirring shaft, 223, a stirring paddle, 224, a stirring frame, 225, a dustproof sealing cover, 226, a rack, 23, a spoiler, 24, an access hole, 25, a vent, 3, a hot air blowing device, 31, a fan, 32, a heating furnace, 4, an arsenic collecting device, 41, a primary cooling device, 42, a secondary crystal collecting device, 43, a tertiary crystal collecting device, 44, a four-stage dust collecting device, 5, a smoke processing device, 6, an air inducing device, 7, a discharging device, 8, a discharging device, 81, a primary discharging valve, 82, a secondary discharging valve, 83 and a temporary storage box.
Detailed Description
The following examples are provided to further illustrate the embodiments of the present invention.
Referring to fig. 1, a production apparatus for continuously producing arsenic trioxide, comprising: the device comprises a feeding device 1, a thermal reaction device 2, a hot air blowing device 3, an arsenic collecting device 4, a flue gas treatment device 5, an induced draft device 6 and a discharging device 7 which are connected and controlled by a control device; the outlet of the feeding device 1 is hermetically communicated with the bottom inlet of the thermal reaction device 2, the outlet of the hot air blowing device 3 is hermetically communicated with the bottom inlet of the thermal reaction device 2, the outlet of the thermal reaction device 2 is hermetically communicated with the inlet of the arsenic collecting device 4 through a pipeline, the outlet of the arsenic collecting device 4 is hermetically communicated with the flue gas treatment device 5 through a pipeline, the outlet of the induced air device 6 is hermetically communicated with the inlet of the flue gas treatment device 5 and the top outlet of the arsenic collecting device 4, and the bottom outlet of the arsenic collecting device 4 is hermetically connected with the discharging device 7.
And the feeding device 1 is used for conveying the arsenic trioxide coarse material into the thermal reaction device 2 to be sublimated to generate arsenic trioxide flue gas. The feeding device 1 comprises a spiral conveying metering device 11 in the horizontal direction, a feeding port 12 is arranged on the spiral conveying metering device 11, and an outlet of the spiral conveying metering device 11 is in sealed connection with an inlet at the bottom of the thermal reaction device 2 through a sealing flange.
The coarse arsenic trioxide material enters the feeding device 1 through a feeding port 12. The coarse arsenic trioxide material is in a sealed state in the feeding process by adopting the spiral conveying metering device 11 as a feeding device.
And the thermal reaction device 2 is used for heating and sublimating the arsenic trioxide coarse material to generate arsenic trioxide gas. Referring to the attached drawings 2, 3 and 4, the thermal reaction device 2 comprises a boiling reaction furnace 21 which is vertically arranged and a stirring device 22 which is vertically arranged at the bottom in the boiling reaction furnace 21, outlets of the feeding device 1 and the hot air blowing device 3 are respectively communicated with the boiling reaction furnace 21 in a sealing manner, and the feeding device 1 and the hot air blowing device 3 are oppositely arranged at two sides of the boiling reaction furnace 21.
The boiling reaction furnace 21 comprises a combustion chamber 211, a heat preservation furnace body 212 which is hermetically communicated with the upper end surface of the combustion chamber 211 through a sealing flange, and a connecting cylinder 213 which is hermetically connected with the outer circumference of the combustion chamber 211 at the outer side of the combustion chamber 211, wherein the connecting cylinder 213 is fixed on a frame 226 through a fastening bolt, the bottom in the connecting cylinder 213 is in an inverted cone shape, and a gap is arranged between the bottom of the connecting cylinder 213 and the bottom of the combustion chamber 211 so as to facilitate the hot air to enter the combustion chamber 211; an air inlet is formed in the connecting cylinder 213, and an outlet of the hot air blowing device 3 is hermetically communicated with the air inlet through a flange. The combustion chamber 211 has a hollow structure in the furnace wall, and a cooling pipe 2111 is provided therein, so that cooling water can be injected to control the temperature of the furnace wall and the internal space of the combustion chamber 211.
The stirring device 22 comprises a motor 221, a stirring shaft 222 driven by the motor 221 through a belt pulley, a stirring paddle 223 fixedly mounted on the stirring shaft 222, and a stirring frame 224 sleeved on the stirring shaft 222 and fixed on a frame 226, wherein a conical dustproof sealing cover 225 is arranged on the stirring frame 224 extending into the combustion chamber 211, the stirring paddle 223 and the stirring frame 224 extend into the combustion chamber 211, and a gap is formed between the dustproof sealing cover 225 on the stirring frame 224 and the bottom of the combustion chamber 211 so that hot air can enter the combustion chamber 211.
While the combustion chamber 211, the stirring frame 223, the dustproof sealing cover 225 and the connecting cylinder 213 form a closed space, because a gap is formed between the three, hot air generated by the hot air blowing device 3 enters the combustion chamber 211 through the gap and reacts with the arsenic trioxide coarse material to generate arsenic trioxide flue gas and other impurity gases.
Through set up stirring rake 224 in combustion chamber 211, can stir the arsenic trioxide coarse fodder that is carried by material feeding unit 1 and break up, when avoiding the arsenic trioxide coarse fodder caking, improve the area of contact of arsenic trioxide coarse fodder and oxygen in order to improve reaction efficiency.
Because the bottom of the connecting cylinder 213 is of an inverted cone structure, the outer circumference of the bottom of the combustion chamber 211 is also of an inverted cone structure, the upper part of the stirring frame 224, which extends into the combustion chamber 211, is of a cone structure, and the cone degree of the bottom of the combustion chamber 211 is larger than that of the connecting cylinder 213, when hot air generated by the hot air blowing device 3 enters the combustion chamber 211 through a gap, the wind resistance is reduced, meanwhile, the hot air can ascend along the conical surface of the stirring frame 224, and the phenomenon that the reaction is insufficient due to direct blowing of arsenic trioxide coarse materials is avoided.
The heat-insulating layer is arranged in the heat-insulating furnace body 212, the vent 25 is arranged at the top end of the heat-insulating furnace body 212, and the upper part of the heat-insulating furnace body 212 is hermetically communicated with the inlet of the arsenic collecting device 4 through a pipeline.
A plurality of groups of horizontal spoilers 23 are arranged on the inner wall of the heat preservation furnace body 212 in an interlaced manner, and the spoilers 23 are arranged to control the ascending speed of the generated arsenic trioxide flue gas, so that the reaction area of the arsenic trioxide coarse material can be increased, and the reaction sufficiency can be improved. The spoiler 23 may be configured as a fin structure, which may further increase the contact area between the unreacted arsenic trioxide coarse powder and the spoiler, and increase the generation efficiency and sufficient amount of arsenic trioxide at higher temperature.
In order to facilitate the maintenance of the thermal reaction apparatus 2, a maintenance hole 24 may be formed in the wall of the heat-insulating furnace body 212.
And the hot air blowing device 3 is used for generating hot air and reacting with the arsenic trioxide coarse material conveyed by the feeding device 1 to generate arsenic trioxide gas. The blowing device comprises a fan 31 and a heating furnace 32, wherein the outlet of the fan 31 is hermetically connected with the inlet of the heating furnace 32, and the outlet of the heating furnace 32 is hermetically communicated with the inlet of the connecting cylinder 213 of the thermal reaction device 2.
The blower 31 may be a roots blower, and the control device may control the rotation speed of the blower 31 to control the wind speed and may control the temperature of the heating furnace 32 to control the reaction speed of the coarse arsenic trioxide material in the thermal reaction device.
And the arsenic collecting device 4 is used for cooling and crystallizing the arsenic trioxide gas. The arsenic collecting device 4 comprises a primary cooling device 41, and a secondary crystal collecting device 42, a tertiary crystal collecting device 43 and a quaternary dust collecting device 44, wherein outlets at the bottom of the secondary crystal collecting device, the tertiary crystal collecting device 43 and the quaternary dust collecting device 44 are respectively connected with the discharging device 7 in a sealing manner.
The inlet of the first-stage cooling device 41 is communicated with the outlet at the top of the heat-preserving furnace body 212 of the thermal reaction device 2 in a sealing way through a pipeline, the outlet of the first-stage cooling device is communicated with the inlet at the top of the second-stage crystal collecting device 42 in a sealing way through a pipeline, the outlet at the top of the second-stage crystal collecting device 42 is communicated with the inlet at the top of the third-stage crystal collecting device 43 in a sealing way through a pipeline, the outlet at the top of the third-stage crystal collecting device 43 is communicated with the inlet at the top of the fourth-stage dust collecting device 44 in a sealing way through a pipeline, and the outlet at the top of the fourth-stage dust collecting device 44 is connected with the inlet at the bottom of the flue gas treatment device 5 in a sealing way through a pipeline.
The primary cooling device 41 can be an existing water-cooling kettle or a cooling pipe with a water-cooling device arranged inside and outside, the secondary crystal collecting device 42 and the tertiary crystal collecting device 43 can be bag-type dust collectors, the quaternary dust collecting device 44 can be precision dust collecting equipment such as a pulse dust collector, high-temperature gas coming out of the thermal reaction device 2 is cooled through the primary cooling device 41, and the secondary crystal collecting device 42, the tertiary crystal collecting device 43 and the quaternary dust collecting device 44 perform crystal collection on the cooled arsenic trioxide gas so as to achieve the purpose of collecting arsenic.
In order to keep the sealing effect of the whole system and prevent arsenic trioxide gas from escaping to the atmosphere through the arsenic collecting device 4 and the discharging device 7, the second-stage crystal collecting device 42, the third-stage crystal collecting device 43 and the fourth-stage dust collecting device 44 are respectively in sealing connection with the discharging device 7 through the discharging device 8, referring to fig. 5, the discharging device 8 comprises a first-stage discharging valve 81 respectively in sealing connection with the bottoms of the second-stage crystal collecting device 42, the third-stage crystal collecting device 43 and the fourth-stage dust collecting device 44, the second-stage discharging valve 82 is in sealing connection with the first-stage discharging valve 81 through a pipeline, and the second-stage discharging valve 82 is in sealing connection with the discharging device 7.
In order to avoid energy consumption caused by continuous discharging of the discharging device, a temporary storage box 83 can be connected between a first-stage discharging valve 81 and a second-stage discharging valve 82, a weighing and metering device is arranged in the temporary storage box 83, in the circulating process of discharging, the first-stage discharging valve 81 is opened firstly, arsenic trioxide solids fall into the temporary storage box 83, when the upper limit threshold set by the weighing and metering device is reached, the first-stage discharging valve 81 is closed, the second-stage discharging valve 82 is opened, the arsenic trioxide solids fall into the discharging device 7 and are conveyed to a finished product bin, when the lower limit threshold set by the weighing and metering device is reached in the temporary storage box 83, the second-stage discharging valve 82 is closed, the first-stage discharging valve 81 is opened, and the arsenic trioxide solids collected by a second-stage crystal collecting device 42, a third-stage crystal collecting device 43 and a fourth-stage dust collecting device 44 enter the temporary storage box 83 to reciprocate circularly.
And the discharging device 7 is used for conveying the crystallized arsenic trioxide into the collecting container. The discharging device 7 can be a horizontally arranged screw conveyor, the outlet of the secondary discharging valve 82 is respectively connected with the screw conveyor through a sealing flange, and the sealing effect of the discharging process can be realized through the screw conveyor.
And the flue gas treatment device 5 is used for collecting and intensively treating impurity gases which cannot be crystallized. The impurity gas which can not pass through the condensation crystallization or dust collection device needs to be treated, and the flue gas treatment device can use a spray tower and a water bath technology in the prior art to treat.
And the air inducing device 6 is used for forming a negative pressure state in the whole production device and accelerating the arsenic trioxide gas to move forwards. The outlet of the induced draft device 6 is hermetically communicated with the inlet of the flue gas treatment device 5 and the outlet at the top of the four-stage dust collecting device 44 of the arsenic collecting device 4.
And the control device is used for connecting and controlling the feeding device 1, the hot air blowing device 3, the thermal reaction device 2, the arsenic collecting device 4, the flue gas treatment device 5, the discharging device 7, the induced draft device 6 and the discharging device 8. The control device is connected with and controls the devices, so that the automatic and digital control of the production system can be realized, even unattended production can be realized, and the adjustment can be performed according to actual production parameters, production environment and production mode.
For example, the control device can control the feeding speed and the feeding amount by controlling the feeding device 1, control the discharging device 8 to control the discharging speed, the discharging amount and the discharging interval, control the hot air blowing device 3 to control the air speed and the air blowing temperature, control the thermal reaction device 2 to control the thermal reaction temperature, control the arsenic collecting device 4 to control the arsenic collecting speed and the arsenic collecting amount, control the flue gas treatment device 5 to control the waste gas treatment speed and the treatment amount, and control the discharging device 7 to control the discharging speed and the discharging amount. The program of the control device for controlling the parameters of various related devices can utilize the existing program, so that the control and the construction of the whole production system are facilitated, the production efficiency and the production safety of arsenic trioxide are improved, and the construction cost of the whole production system is reduced.
The feeding device 1, the hot air blowing device 3, the thermal reaction device 2, the arsenic collecting device 4, the flue gas treatment device 5, the discharging device 7 and the induced air device 6 can be provided with a plurality of groups, and the control device respectively controls the automatic operation of the groups, so that the production efficiency can be further improved.
On the premise of adopting the production device for continuously preparing the arsenic trioxide, the production method for continuously preparing the arsenic trioxide comprises the following steps:
s1: setting various parameters of the feeding device 1, the hot air blowing device 3, the thermal reaction device 2, the arsenic collecting device 4, the flue gas treatment device 5, the discharging device 7 and the induced draft device 6 through a control device, controlling the air blowing temperature of the hot air blowing device 3 and controlling the temperature in the arsenic collecting device 4 to be proper;
s2: starting the hot air blowing device 3, the thermal reaction device 2 and the induced draft device 6;
s3: the feeding device 1 feeds the arsenic trioxide coarse materials according to set feeding parameters, the arsenic trioxide coarse materials are stirred and scattered by the thermal reaction device 2 and then are subjected to sublimation reaction with hot air blown in by the hot air blowing device 3 to generate arsenic trioxide gas, the arsenic trioxide gas is crystallized and collected by the arsenic collecting device 4 and is conveyed into a finished product bin by the discharging device, and the uncrystallized impurity gas is subjected to centralized treatment by the flue gas treatment device;
s4: and repeating the step S3 to realize continuous preparation and purification of the arsenic trioxide.
The above embodiments and examples are specific supports for applying the technical idea of a production apparatus for continuously preparing arsenic trioxide provided by the present invention, and the protection scope of the present invention is not limited thereby, and any equivalent changes or equivalent modifications made on the basis of the technical scheme according to the technical idea provided by the present invention still belong to the protection scope of the technical scheme of the present invention.
Claims (7)
1. A production device for continuously preparing arsenic trioxide is characterized in that: the device includes: the feeding device, the thermal reaction device, the hot air blowing device, the arsenic collecting device, the flue gas processing device, the induced draft device and the discharging device are connected and controlled by the control device; the outlet of the feeding device is hermetically communicated with the bottom inlet of the thermal reaction device, the outlet of the hot air blowing device is hermetically communicated with the bottom inlet of the thermal reaction device, the outlet of the thermal reaction device is hermetically communicated with the inlet of the arsenic collecting device through a pipeline, the outlet of the arsenic collecting device is hermetically communicated with the flue gas treatment device through a pipeline, the outlet of the induced air device is hermetically communicated with the inlet of the flue gas treatment device and the top outlet of the arsenic collecting device, and the bottom outlet of the arsenic collecting device is hermetically connected with the discharging device.
2. The production apparatus for continuously producing arsenic trioxide according to claim 1, wherein: the thermal reaction device comprises a vertically arranged boiling reaction furnace and a stirring device vertically arranged at the bottom in the boiling reaction furnace, outlets of the feeding device and the hot air blowing device are respectively communicated with the boiling reaction furnace in a sealing manner, and the feeding device and the hot air blowing device are oppositely arranged at two sides of the boiling reaction furnace.
3. The production apparatus for continuously preparing arsenic trioxide as claimed in claim 2, wherein: and a plurality of groups of horizontal spoilers are arranged on the inner wall of the upper part of the boiling reaction furnace in a staggered manner.
4. The production apparatus for continuously preparing arsenic trioxide as claimed in claim 1, wherein: receive arsenic device and include one-level cooling device and bottom export secondary crystallization collection device, tertiary crystallization collection device, the level four dust arrester installation of sealing connection discharging device respectively, the sealed top entry that communicates hot reaction unit's of the sealed top export of intercommunication of entry of one-level cooling device and its export sealed intercommunication secondary crystallization collection device, the sealed top entry that communicates tertiary crystallization collection device of top export of secondary crystallization collection device, the sealed top entry that communicates level four dust arrester installation of top export of tertiary crystallization collection device, level four dust arrester installation's the sealed bottom entry of connecting flue gas processing apparatus of top export.
5. The production apparatus for continuously producing arsenic trioxide according to claim 4, wherein: the secondary crystallization collecting device, the tertiary crystallization collecting device and the four-stage dust collecting device are respectively connected with the discharging device through the discharging device in a sealing manner, the discharging device comprises a primary discharging valve which is communicated with the arsenic collecting device in a sealing manner, and a secondary discharging valve which is connected with the primary discharging valve in a sealing manner through a pipeline, and the secondary discharging valve is connected with the discharging device in a sealing manner.
6. The production apparatus for continuously producing arsenic trioxide according to claim 1, wherein: the hot air blowing device comprises a fan and a heating furnace, an outlet of the fan is hermetically connected with an inlet of the heating furnace, and an outlet of the heating furnace is hermetically communicated with a bottom inlet of the thermal reaction device.
7. The production apparatus for continuously producing arsenic trioxide according to claim 1, wherein: and the feeding device and the discharging device are both spiral conveying metering devices.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220331721.0U CN216737608U (en) | 2022-02-18 | 2022-02-18 | Production device for continuously preparing arsenic trioxide |
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| CN202220331721.0U CN216737608U (en) | 2022-02-18 | 2022-02-18 | Production device for continuously preparing arsenic trioxide |
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| CN216737608U true CN216737608U (en) | 2022-06-14 |
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