A cyanuric chloride scraper crystallization device

Abstract

The utility model discloses a cyanuric chloride scraper crystallization device, which relates to the technical field of chemical crystallization equipment, comprising a primary crystallizer, a secondary crystallizer is arranged at the output end of the primary crystallizer, a tail gas treatment tower is arranged at the output end of the secondary crystallizer, a rotating shaft is penetrated at the middle position of the interior of the primary crystallizer, a scraper motor is arranged at the middle position of the upper wall of the primary crystallizer, a dividing drum is arranged at the upper end of the rotating shaft at a position corresponding to the material input pipe, a dividing plate is arranged at a position of the front and rear middle positions of the interior of the primary crystallizer at a position corresponding to the dividing drum, a main scraper is arranged at the middle position of the rotating shaft, the main scrapers are staggered inside the primary crystallizer, an auxiliary scraper is arranged at the lower end of the rotating shaft, crystals at the tank wall are scraped off, the particles of the cyanuric chloride product are more uniform, the fluidity is better, the increase of production consumption is avoided, and the impact on product quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical crystallization equipment, in particular to a cyanuric chloride scraper crystallization device. Background Art

[0002] In the production process of cyanuric chloride, its raw material cyanogen chloride is produced by the reaction of sodium cyanide and chlorine. Through ratio control, they enter the reactor together for reaction, and the reaction produces two phases, gas phase and liquid phase. After the gas phase cyanogen chloride is separated into gas and liquid by the separator, it is cooled and dehydrated by the cooler, enters the water mist collector to remove moisture again, and finally enters the dryer for dehydration. The removed wastewater enters the analytical kettle. Under indirect heating by steam, the cyanogen chloride monomer in the wastewater returns to the reaction system. The wastewater enters the wastewater tank, and the liquid level of the wastewater tank is controlled by an automatic valve, and it is transported to the reclaimed water workshop for treatment. The cyanogen chloride gas coming out of the dryer enters the polymerization furnace, where it is directly polymerized into cyanuric chloride gas under the catalytic action of activated carbon and then enters the crystallizer. It is directly condensed into cyanuric chloride solid powder under the action of cold air and enters the mixing tank. After adding silicon and stirring, it is directly connected to the material. The remaining small amount of gaseous cyanuric chloride enters the collector with the cold air for secondary crystallization. After being filtered by the filter air bag, the cyanuric chloride powder is directly retained in the collector. The remaining production waste gas enters the tail gas absorption system through the wind pipe for absorption and is discharged into the atmosphere through the chimney after qualified treatment.

[0003] Gaseous cyanuric chloride meets cold air in the crystallization tank and condenses into cyanuric chloride powder. Due to the low heat exchange efficiency between molecules, part of the gaseous cyanuric chloride crystallizes on the tank wall, forming wall-hanging crystal blocks and agglomerates. The particles of the cyanuric chloride product are uneven and have poor fluidity, which not only increases production consumption but also seriously affects product quality. Utility Model Content

[0004] The utility model aims to provide a cyanuric chloride scraper crystallization device to solve the problem that the gaseous cyanuric chloride meets cold air in the crystallization tank and condenses into cyanuric chloride powder, and due to the low heat exchange efficiency between molecules, part of the gaseous cyanuric chloride is crystallized at the tank wall to form wall-hanging crystal blocks and plate blocks, and the particles of the cyanuric chloride product are uneven and the fluidity is poor, which not only causes an increase in production consumption but also seriously affects the product quality.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cyanuric chloride scraper crystallization device, comprising a primary crystallizer, a secondary crystallizer is provided at the output end of the primary crystallizer, a tail gas treatment tower is provided at the output end of the secondary crystallizer, a material input pipe is connected to the side of the primary crystallizer away from the secondary crystallizer, a rotating shaft is penetrated through the middle position of the interior of the primary crystallizer, a scraper motor is provided at the middle position of the upper wall of the primary crystallizer, a splitting drum is provided at the upper end of the rotating shaft at a position corresponding to the material input pipe, a splitting plate is provided at the middle position of the front and rear middle positions of the interior of the primary crystallizer at a position corresponding to the splitting drum, a main scraper is provided at the middle position of the rotating shaft, the main scrapers are staggered inside the primary crystallizer, an auxiliary scraper is provided at the lower end of the rotating shaft, and a drying air input pipe is connected to one side of the upper ends of the primary crystallizer and the secondary crystallizer.

[0006] Preferably, a discharge hopper is provided at the lower end of the primary crystallizer and the secondary crystallizer, the auxiliary scraper is arranged inside the discharge hopper, the lower end of the discharge hopper is connected to a discharge pipe mouth, and a partition is provided at the middle position of the upper end of the secondary crystallizer.

[0007] Preferably, a reducer is provided in the middle of the upper wall of the primary crystallizer, the power input end of the reducer is connected to the power output end of the scraper motor through a coupling, and the power output end of the reducer is connected to the rotating shaft.

[0008] Preferably, a connecting pipe is connected between the output end of the primary crystallizer and the input end of the secondary crystallizer, and a tail gas output pipe is connected between the output end of the secondary crystallizer and the input end of the tail gas treatment tower.

[0009] Preferably, a support frame is fixedly connected between the main scraper, the auxiliary scraper and the rotating shaft.

[0010] Compared with the prior art, the utility model has the following beneficial effects: gaseous cyanuric chloride meets cold air in a crystallization tank and condenses into cyanuric chloride powder. Due to the low heat exchange efficiency between molecules, part of the gaseous cyanuric chloride is crystallized at the tank wall to form wall-hanging crystal blocks and plate agglomerates. The main scraper and the auxiliary scraper are driven by a scraper motor to scrape the inner wall of the crystallizer to scrape off the crystals at the tank wall. The particles of the cyanuric chloride product are more uniform and have better fluidity, thereby avoiding an increase in production consumption and ensuring the impact on product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is an axonometric drawing of the main structure of the utility model;

[0012] Figure 2 It is an axonometric cross-sectional view of the main structure of the utility model;

[0013] Figure 3 This is a front cross-sectional view of the main structure of the utility model;

[0014] Figure 4 It is a schematic diagram of the main structure of the utility model;

[0015] Figure 5 It is a top view schematic diagram of the main structure of the utility model.

[0016] In the figure: 1-primary crystallizer, 2-secondary crystallizer, 3-exhaust treatment tower, 4-material input pipe, 5-rotating shaft, 6-scraper motor, 7-dividing drum, 8-dividing plate, 9-main scraper, 10-auxiliary scraper, 11-drying air input pipe, 12-discharging hopper, 13-discharging pipe mouth, 14-partition, 15-reducer, 16-connecting pipe, 17-exhaust output pipe, 18-support frame. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-5 The utility model provides a cyanuric chloride scraper crystallization device, comprising a primary crystallizer 1, a secondary crystallizer 2 is provided at the output end of the primary crystallizer 1, a tail gas treatment tower 3 is provided at the output end of the secondary crystallizer 2, a material input pipe 4 is connected to the primary crystallizer 1 away from the secondary crystallizer 2, a rotating shaft 5 is provided through the middle position of the interior of the primary crystallizer 1, a scraper motor 6 is provided at the middle position of the upper wall of the primary crystallizer 1, a splitting drum 7 is provided at the upper end of the rotating shaft 5 corresponding to the material input pipe 4, a splitting plate 8 is provided at the middle position of the front and rear middle position of the interior of the primary crystallizer 1 corresponding to the splitting drum 7, a main scraper 9 is provided at the middle position of the rotating shaft 5, the main scraper 9 is staggered inside the primary crystallizer 1, an auxiliary scraper 10 is provided at the lower end of the rotating shaft 5, and a drying air input pipe 11 is connected to one side of the upper ends of the primary crystallizer 1 and the secondary crystallizer 2.

[0019] When in use, the cyanuric chloride gas to be crystallized is input into the first-stage crystallizer 1 through the material input pipe 4, and the dry wind of -18 degrees Celsius is input into the first-stage crystallizer 1 and the second-stage crystallizer 2 through the dry wind input pipe 11. The cyanuric chloride gas is condensed in the first-stage crystallizer 1 and the second-stage crystallizer 2 in turn. The rotating shaft 5 is driven to rotate by the scraper motor 6, thereby driving the dividing drum 7, the main scraper 9 and the auxiliary scraper 10 to rotate. The cyanuric chloride gas input from the material input pipe 4 is blocked by the dividing drum 7 and the dividing plate 8 to prevent the gas from being directly input into the second-stage crystallizer 2 without condensation. The cyanuric chloride cleaned in the first-stage crystallizer 1 is scraped off by the main scraper 9 and the auxiliary scraper 10, and the cyanuric chloride gas continues to condense in the second-stage crystallizer 2. The gas that has completed crystallization is input into the tail gas treatment tower 3 for treatment.

[0020] A discharge hopper 12 is provided at the lower end of the primary crystallizer 1 and the secondary crystallizer 2, and the auxiliary scraper 10 is arranged inside the discharge hopper 12. The crystals at the position of the discharge hopper 12 are scraped off by the auxiliary scraper 10. The lower end of the discharge hopper 12 is connected to a discharge pipe opening 13. A partition 14 is provided at the middle position of the upper end of the secondary crystallizer 2. The discharge hopper 12 is arranged at the lower end of the primary crystallizer 1 and the secondary crystallizer 2. The crystallized cyanuric chloride is uniformly collected by the discharge hopper 12 and discharged to the outside through the discharge pipe opening 13. A partition 14 is arranged inside the secondary crystallizer 2 to prevent the gas from being directly discharged without condensation.

[0021] A reducer 15 is provided in the middle position of the upper wall of the primary crystallizer 1. The power input end of the reducer 15 is connected to the power output end of the scraper motor 6 through a coupling. The power output end of the reducer 15 is connected to the rotating shaft 5. The power of the scraper motor 6 is decelerated by the reducer 15 and then transmitted to the rotating shaft 5, and the rotating shaft 5 is driven to rotate by the scraper motor 6.

[0022] A connecting pipe 16 is connected between the output end of the primary crystallizer 1 and the input end of the secondary crystallizer 2, and a tail gas output pipe 17 is connected between the output end of the secondary crystallizer 2 and the input end of the tail gas treatment tower 3. The cyanuric chloride gas output from the primary crystallizer 1 is input into the interior of the secondary crystallizer 2 through the connecting pipe 16, and the cyanuric chloride gas output from the secondary crystallizer 2 is input into the interior of the tail gas treatment tower 3 through the tail gas output pipe 17.

[0023] A support frame 18 is fixedly connected between the main scraper 9 and the auxiliary scraper 10 and the rotating shaft 5 , and the main scraper 9 and the auxiliary scraper 10 are fixedly connected to the rotating shaft 5 through the support frame 18 .

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cyanuric chloride scraper crystallization device, characterized in that: The invention comprises a primary crystallizer (1), wherein a secondary crystallizer (2) is provided at the output end of the primary crystallizer (1), a tail gas treatment tower (3) is provided at the output end of the secondary crystallizer (2), a material input pipe (4) is connected to the side of the primary crystallizer (1) away from the secondary crystallizer (2), a rotating shaft (5) is provided through the middle position of the interior of the primary crystallizer (1), a scraper motor (6) is provided at the middle position of the upper wall of the primary crystallizer (1), and the upper end of the rotating shaft (5) is connected to the material input pipe (4). A dividing drum (7) is provided at a position corresponding to (4); a dividing plate (8) is provided at a position corresponding to the dividing drum (7) in the front and rear middle position inside the primary crystallizer (1); a main scraper (9) is provided at the middle position of the rotating shaft (5); the main scrapers (9) are staggered inside the primary crystallizer (1); an auxiliary scraper (10) is provided at the lower end of the rotating shaft (5); and a drying air inlet pipe (11) is connected to one side of the upper end of the primary crystallizer (1) and the secondary crystallizer (2).

2. A cyanuric chloride scraper crystallization device according to claim 1, characterized in that: A discharge hopper (12) is provided at the lower end of the primary crystallizer (1) and the secondary crystallizer (2); the auxiliary scraper (10) is arranged inside the discharge hopper (12); the lower end of the discharge hopper (12) is connected to a discharge pipe opening (13); and a partition plate (14) is provided at the middle position of the upper end of the secondary crystallizer (2).

3. A cyanuric chloride scraper crystallization device according to claim 1, characterized in that: A reducer (15) is provided in the middle of the upper wall of the primary crystallizer (1), the power input end of the reducer (15) is connected to the power output end of the scraper motor (6) through a coupling, and the power output end of the reducer (15) is connected to the rotating shaft (5).

4. A cyanuric chloride scraper crystallization device according to claim 1, characterized in that: A connecting pipe (16) is connected between the output end of the primary crystallizer (1) and the input end of the secondary crystallizer (2), and a tail gas output pipe (17) is connected between the output end of the secondary crystallizer (2) and the input end of the tail gas treatment tower (3).

5. A cyanuric chloride scraper crystallization device according to claim 1, characterized in that: A support frame (18) is fixedly connected between the main scraper (9) and the auxiliary scraper (10) and the rotating shaft (5).

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