CN-224207391-U - Reaction water removing device for o-phenylenediamine production

Abstract

The utility model discloses a reaction water removing device for producing o-phenylenediamine, which relates to the technical field of o-phenylenediamine production and comprises a dehydration tank and a heating shell, wherein the top end of the dehydration tank is connected with a cap in a sealing manner, the top of the cap is connected with an air inlet pipe, an air outlet pipe and a feeding pipe with a valve in a penetrating manner, the air inlet pipe is further provided with a valve body, the bottom of the dehydration tank is connected with a discharging pipe with a valve in a penetrating manner, one end of the air outlet pipe, which is far away from the cap, is connected with a vacuum pump, and the heating shell is sleeved on the outer side of the dehydration tank. According to the utility model, the heating shell is started to heat the o-phenylenediamine in the dehydration tank, the vacuum pump is started to pump out the air in the dehydration tank, so that the interior of the dehydration tank is in a negative pressure state, the boiling point of raw water is reduced, and each valve is opened, so that the air in the dehydration tank is pumped out while the external air enters the dehydration tank, and the water vapor in the dehydration tank is brought out, so that the use effect is good.

Inventors

• ZHANG PENGFEI
• SUN QUAN
• HUANG PENGFEI

Assignees

• 安徽东至广信农化有限公司

Dates

Publication Date

20260508

Application Date

20250225

Claims (10)

1. 1. The utility model provides a reaction water remove device for o-phenylenediamine production which characterized in that includes: The novel dewatering device comprises a dewatering tank (1) and a heating shell (3), wherein the top end of the dewatering tank (1) is connected with a cap (2) in a sealing manner, the top of the cap (2) is connected with an air inlet pipe (13) and an air outlet cylinder (11) in a penetrating manner and a feeding cylinder (9) with a valve, the air inlet pipe (13) is further provided with a valve body (15), the bottom of the dewatering tank (1) is connected with a discharging cylinder (8) with a valve in a penetrating manner, one end of the air outlet cylinder (11) away from the cap (2) is connected with a vacuum pump (12), the heating shell (3) is sleeved outside the dewatering tank (1), and a stirring structure is arranged on the cap (2) in a matching manner and extends to the inside of the dewatering tank (1) and is used for stirring o-phenylenediamine inside the dewatering tank.
2. 2. The reaction water removing device for producing o-phenylenediamine according to claim 1, wherein the dehydration tank (1) and the cap (2) are detachably connected by bolts or buckles.
3. 3. The reaction water removing device for o-phenylenediamine production according to claim 1, wherein the stirring structure comprises a motor (5), the motor (5) is fixedly arranged at the top of the cap (2), a driving shaft of the motor (5) penetrates through the cap (2), a rotating shaft (4) is connected to the end portion of the driving shaft, and a plurality of stirring shafts (6) are distributed on two sides of the rotating shaft (4).
4. 4. The reaction water removing apparatus for producing o-phenylenediamine according to claim 1, wherein the diameter of the dehydration tank (1) is gradually reduced in size from the top thereof downward.
5. 5. The reaction water removing device for o-phenylenediamine production according to claim 3, wherein a scraping structure is movably arranged on the rotating shaft (4) in a matched mode, the scraping structure comprises a lifting structure and a scraping plate (7), the lifting structure is used for driving the scraping plate (7) to move up and down, and the scraping plate (7) is matched with the inner wall of the dehydration tank (1).
6. 6. The reaction water removing device for o-phenylenediamine production according to claim 5, wherein the lifting structure comprises a sliding rod (17), a sliding groove (16) is formed in the rotating shaft (4), an electric telescopic rod (18) is fixed at one end of the sliding groove (16), the driving end of the electric telescopic rod (18) is connected with the end portion of the sliding rod (17), the sliding rod (17) is slidably connected in the sliding groove (16), and a scraping plate (7) is connected to the side face of the sliding rod (17) in a matched mode.
7. 7. The reaction water removing device for producing o-phenylenediamine according to claim 6, wherein a plurality of connecting rods (20) are distributed on two sides of the sliding rod (17), and one end, far away from the sliding rod (17), of each connecting rod (20) is connected with the scraping plate (7).
8. 8. The reaction water removing device for producing o-phenylenediamine according to claim 7, wherein a plurality of through holes (19) communicated with the sliding groove (16) are distributed on the side surface of the rotating shaft (4), and the connecting rods (20) are slidably connected in the corresponding through holes (19).
9. 9. The reaction water removing device for producing o-phenylenediamine according to claim 1, wherein a filter plate (14) for filtering air impurities is provided inside the air inlet pipe (13).
10. 10. The reaction water removing device for producing o-phenylenediamine according to claim 1, wherein a temperature measuring instrument (10) is arranged at the bottom of the dehydration tank (1).

Description

Reaction water removing device for o-phenylenediamine production Technical Field The utility model relates to the technical field of o-phenylenediamine production, in particular to a reaction water removing device for o-phenylenediamine production. Background O-phenylenediamine is an organic compound, is colorless monoclinic crystal at normal temperature, has deep color in air and sunlight, is slightly soluble in cold water, is easily soluble in ethanol, diethyl ether and chloroform, is an intermediate of dye, pesticide, auxiliary agent, photosensitive material and the like, is used for manufacturing polyamide, polyurethane, carbendazim, thiophanate, vat scarlet GG, leveling agent, anti-aging agent MB, and is also used for preparing developer, surfactant and the like. The production process of the o-phenylenediamine can be summarized as that aniline and nitric acid are taken as main raw materials, nitration reaction is carried out under the action of a catalyst to generate the o-phenylenediamine and water, then crude products are obtained through separation and purification, and then the crude products are subjected to water washing and dehydration treatment, so that the high-purity o-phenylenediamine product is finally obtained, wherein the water washing is one of key steps for removing impurities and unreacted raw materials. However, as the material after washing contains reaction water, the water content of the product is high, the original design does not treat the water-containing material, and the secondary washing extraction is directly sent to the o-phenylenediamine discharge tank, so that the rectification production efficiency of the downstream working section is low, the product quality is low and the product yield is low. Disclosure of utility model The utility model aims to provide a reaction water removing device for producing o-phenylenediamine, which aims to solve the technical problem of low production efficiency of the o-phenylenediamine in the prior art. The technical problems to be solved by the utility model can be realized by the following technical scheme: The utility model provides a reaction water remove device is used in o-phenylenediamine production, includes dehydration jar and heating shell, the top sealing connection of dehydration jar has the block, the top through-connection of block has intake pipe, gas outlet tube and has the feed cylinder of valve, still be provided with the valve body in the intake pipe, dehydration jar bottom through-connection has the play feed cylinder that has the valve, the one end that the block was kept away from to the gas outlet tube is connected with the vacuum pump, the heating shell cover is established in the dehydration jar outside, the cooperation is provided with stirring structure on the block, stirring structure extends to the dehydration jar inside, and is used for stirring its inside o-phenylenediamine. As a further scheme of the utility model, the dehydration tank and the cap are detachably connected through bolts or buckles. As a further scheme of the utility model, the stirring structure comprises a motor, wherein the motor is fixedly arranged at the top of the cap, a driving shaft of the motor penetrates through the cap, the end part of the motor is connected with a rotating shaft, and a plurality of stirring shafts are distributed on two sides of the rotating shaft. As a further aspect of the present utility model, the diameter size of the dehydration tank is gradually reduced from the top thereof downward. As a further scheme of the utility model, the scraping structure is movably arranged on the rotating shaft in a matching way and comprises a lifting structure and a scraping plate, the lifting structure is used for driving the scraping plate to move up and down, and the scraping plate is matched with the inner wall of the dehydration tank. As a further scheme of the utility model, the lifting structure comprises a slide bar, a slide groove is formed in the rotating shaft, an electric telescopic rod is fixed at one end in the slide groove, the driving end of the electric telescopic rod is connected with the end part of the slide bar, the slide bar is connected in the slide groove in a sliding manner, and a scraping plate is connected to the side face of the slide bar in a matched manner. As a further scheme of the utility model, a plurality of connecting rods are distributed on two sides of the sliding rod, and one end of each connecting rod, which is far away from the sliding rod, is connected with the scraping plate. As a further scheme of the utility model, a plurality of through holes communicated with the sliding grooves are distributed on the side face of the rotating shaft, and the connecting rods are connected in the corresponding through holes in a sliding manner. As a further scheme of the utility model, a filter plate for filtering air impurities is arranged in the air inlet pipe. As a further scheme of the utility mo