CN213886132U - O-cyanophenol preparation facilities - Google Patents

Abstract

The utility model discloses an adjacent cyanophenol preparation facilities, including reation kettle, retrieve cauldron and clean room, be provided with the heating chamber in reation kettle's the lateral wall, be provided with the heater in the heating chamber, the top of heating chamber is provided with the bleeder vent, reation kettle's upper end is provided with the back flow, be provided with the condenser pipe in the back flow, reation kettle passes through back flow through connection with retrieving the cauldron, the side end face of retrieving the cauldron is provided with the blast pipe, the bottom of clean room is inserted to the blast pipe, be provided with the adsorption plate in the clean room, the top of clean room is provided with the vacuum pump, be provided with the splashproof stopper in the bleeder vent, be provided with the spring on the splashproof stopper, the splashproof stopper passes through spring and bleeder vent elastic connection. The utility model discloses a to reation kettle water bath heating, make reation kettle be heated more evenly stable, the splashproof stopper through elastic connection avoids the heating chamber water splash to scald the staff, purifies the exhaust gas of equipment through the clean room to the environmental protection performance of equipment has been promoted greatly.

Description

O-cyanophenol preparation facilities

Technical Field

The utility model belongs to the technical field of organic synthesis, specifically be an o-cyanophenol preparation facilities.

Background

The o-cyanophenol is a medicine and pesticide intermediate, the recently discovered bactericide azoxystrobin is used as an intermediate raw material, and the azoxystrobin is developed into the bactericide with the largest sale quantity in the world at present, so the o-cyanophenol intermediate has wide market prospect.

The temperature requirement of o-cyanophenol in the preparation process is strict, in the prior art, the reaction kettle is heated by an electric heating wire, although the heating wire is heated quickly, the heating wire is difficult to keep constant temperature at one temperature, so that the reaction temperature is suddenly high and suddenly low, the reaction yield of a final finished product is influenced, and strong acid waste liquid and organic solvent steam can be generated in the reaction process, so that the environment is seriously influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an o-cyanophenol preparation facilities to solve the problem of equipment temperature control unstability, waste liquid and exhaust pollution environment among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an adjacent cyanophenol preparation facilities, includes reation kettle, retrieves cauldron and clean room, be provided with the heating chamber in reation kettle's the lateral wall, be provided with the heater in the heating chamber, the top of heating chamber is provided with the bleeder vent, reation kettle's upper end is provided with the back flow, be provided with the condenser pipe in the back flow, reation kettle passes through back flow through connection with retrieving the cauldron, the side end face of retrieving the cauldron is provided with the blast pipe, the bottom that the clean room was inserted to the blast pipe, be provided with the adsorption plate in the clean room, the top of clean room is provided with the vacuum pump.

Preferably, reation kettle, recovery cauldron and clean room all adopt one centimetre thick 316L stainless steel board to make, and the inside negative pressure of equipment is too big when avoiding the backward flow when the equipment wall thickening leads to equipment deformation, and the 316L stainless steel has good corrosion resistance to lifting means life.

Preferably, the heaters are annularly arranged at the bottom of the heating chamber, a water filling port is arranged on the side end face of the bottom of the heating chamber, water is filled into the heating chamber through the water filling port, the heaters heat the reaction kettle in a water bath, the water bath heating temperature is more uniform, and the specific heat capacity of water is higher, so that the temperature is easier to control.

Preferably, be provided with the splashproof stopper in the bleeder vent, be provided with the spring on the splashproof stopper, the splashproof stopper passes through spring and bleeder vent elastic connection, and when the heating chamber internal gas pressure was too big, atmospheric pressure backed down the splashproof stopper and made splashproof stopper extrusion spring carry out the pressure release, and the splashproof stopper shelters from the bleeder vent under the reset action of spring after the pressure release, avoids the hot water in the bleeder vent to splash and scalds the staff.

Preferably, the back flow is the nonrust steel pipe of L shape, the back flow comprises perpendicular nonrust steel pipe and the nonrust steel pipe of slope, perpendicular nonrust steel pipe and reation kettle through connection, slope nonrust steel pipe and recovery cauldron through connection, the condenser pipe sets up in the stainless steel pipe of slope, and after the reaction finishes, the spent acid is retrieved in the reation kettle, and the vacuum pump is taken into vacuum in with recovery cauldron with reation kettle to reduce the boiling point of waste liquid, make the waste liquid evaporation, the waste liquid after the evaporation drifts to recovery cauldron by the back flow, flows back to in the recovery cauldron after the condenser pipe cooling.

Preferably, a sodium hydroxide solution is arranged in the purification chamber, the height of the page of the sodium hydroxide solution is higher than the height of the outlet of the exhaust pipe, the sodium hydroxide is a strong alkaline solution and can absorb acid gas, a small amount of hazardous gas can be carried in the gas pumped out by the vacuum pump, and waste acid steam is absorbed and neutralized by the sodium hydroxide.

Preferably, the adsorption plate is formed by pressing activated carbon, an air extraction opening of the vacuum pump is communicated with the upper end face of the purification chamber, and the adsorption plate adsorbs waste gas which is not absorbed by sodium hydroxide, so that gas exhausted by the vacuum pump meets the emission standard.

Preferably, the vacuum pump is 2BE1-353, the heater is AQDRMI, the heater is an armored heating wire and has a waterproof function, and the vacuum pump is connected with a socket through a wire to supply power.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a to reation kettle water bath heating, make reation kettle be heated more evenly stable, the splashproof stopper through elastic connection avoids the heating chamber water splash to scald the staff, purifies the exhaust gas of equipment through the clean room to the environmental protection performance of equipment has been promoted greatly.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1 according to the present invention.

In the figure: 1 reaction kettle, 11 heating chamber, 12 heater, 13 water injection port, 14 air vent, 141 splash-proof plug, 142 spring, 15 return pipe, 16 condenser pipe, 2 recovery kettle, 21 exhaust pipe, 3 purifying chamber, 31 sodium hydroxide solution, 32 adsorption plate, 33 vacuum pump.

Detailed Description

Referring to fig. 1, a device for preparing o-cyanophenol, comprises a reaction kettle 1, a recovery kettle 2 and a purification chamber 3, wherein a heating chamber 11 is arranged in the side wall of the reaction kettle 1, a heater 12 is welded in the heating chamber 11, an air vent 14 is arranged at the top of the heating chamber 11, a return pipe 15 is welded at the upper end of the reaction kettle 1, a condensing pipe 16 is welded in the return pipe 15, the reaction kettle 1 and the recovery kettle 2 are connected through the return pipe 15, an exhaust pipe 21 is welded at the side end face of the recovery kettle 2, the exhaust pipe 21 is inserted into the bottom of the purification chamber 3, an adsorption plate 32 is embedded in the purification chamber 3, and a vacuum pump 33 is installed at the top of the purification chamber 3 through a bolt.

Referring to fig. 1, heaters 12 are annularly arranged at the bottom of a heating chamber 11, a water injection port 13 is welded on the side end face of the bottom of the heating chamber 11, water is injected into the heating chamber 11 through the water injection port 13, so that the heaters 12 heat a reaction kettle 1 in a water bath manner, the water bath heating is more uniform, the specific heat capacity of water is higher, the temperature is easier to control, a return pipe 15 is an L-shaped stainless steel pipe, the return pipe 15 is composed of a vertical stainless steel pipe and an inclined stainless steel pipe, the vertical stainless steel pipe is communicated with the reaction kettle 1, the inclined stainless steel pipe is communicated with a recovery kettle 2, a condenser pipe 16 is welded in the inclined stainless steel pipe, after the reaction is finished, the waste acid in the reaction kettle 1 needs to be recovered, the reaction kettle 1 and the recovery kettle 2 are evacuated by a vacuum pump 33, so as to reduce the boiling point of the waste liquid, the waste liquid is evaporated, the evaporated waste liquid floats to the recovery kettle 2 through the return pipe 15, the waste gas is cooled by the condenser pipe 16 and then flows back to the recovery kettle 2, a sodium hydroxide solution 31 is filled in the purification chamber 3, the height of the sodium hydroxide solution 31 is higher than that of an outlet of the exhaust pipe 21, the sodium hydroxide is a strong alkaline solution and can absorb acid gas, a small amount of hazardous gas can be carried in the gas pumped out by the vacuum pump 33, the waste acid steam is absorbed and neutralized by the sodium hydroxide, the adsorption plate 32 is formed by pressing activated carbon, a pumping hole of the vacuum pump 33 is in through connection with the upper end face of the purification chamber 3, the adsorption plate 32 adsorbs the waste gas which is not absorbed by the sodium hydroxide, and therefore the gas exhausted by the vacuum pump 33 meets the emission standard.

Referring to fig. 2, the vent hole 14 is elastically connected with a splash plug 141, a spring 142 is sleeved on the splash plug 141, the splash plug 141 is elastically connected with the vent hole 14 through the spring 142, when the air pressure in the heating chamber 11 is too high, the air pressure pushes the splash plug 141 open to enable the splash plug 141 to squeeze the spring 142 for pressure relief, the splash plug 141 shields the vent hole 14 under the reset action of the spring 142 after pressure relief, and hot water in the vent hole 14 is prevented from splashing to scald workers.

The working principle of the scheme is as follows: the utility model discloses when using, when preparing adjacent cyanophenol, through water filling port 13 water injection in to heating chamber 11, then start heater 12 heats the water in the heating chamber 11, then make hot water heat reation kettle 1, thereby reach the purpose of even heating, after the preparation is accomplished, start vacuum pump 33, with reation kettle 1 with retrieve the interior evacuation of cauldron 2, then make the waste liquid evaporation in the reation kettle 1 flow back to retrieving cauldron 2 along back flow 15 in, the gas that vacuum pump 33 was taken out is got rid of in the purifying chamber 3 and after adsorbing.

The utility model discloses a to 1 water bath heating of reation kettle, make reation kettle 1 be heated more evenly stable, splash plug 141 through elastic connection avoids the heating chamber 11 water-logging to splash and scalds the staff, purifies the exhaust gas of equipment through clean room 3 to the environmental protection performance of equipment has been promoted greatly.

Claims (7)

1. The utility model provides an ortho-cyanophenol preparation facilities, includes reation kettle (1), recovery cauldron (2) and clean room (3), its characterized in that: be provided with heating chamber (11) in the lateral wall of reation kettle (1), be provided with heater (12) in heating chamber (11), the top of heating chamber (11) is provided with bleeder vent (14), the upper end of reation kettle (1) is provided with back flow (15), be provided with condenser pipe (16) in back flow (15), reation kettle (1) and recovery cauldron (2) are through-going connection through back flow (15), the side end face of recovering cauldron (2) is provided with blast pipe (21), the bottom of clean room (3) is inserted in blast pipe (21), be provided with adsorption plate (32) in clean room (3), the top of clean room (3) is provided with vacuum pump (33).

2. The apparatus for preparing o-cyanophenol according to claim 1, wherein: the reaction kettle (1), the recovery kettle (2) and the purification chamber (3) are all made of 316L stainless steel plates with the thickness of one centimeter.

3. The apparatus for preparing o-cyanophenol according to claim 1, wherein: the heaters (12) are annularly arranged at the bottom of the heating chamber (11), and the side end face of the bottom of the heating chamber (11) is provided with a water filling port (13).

4. The apparatus for preparing o-cyanophenol according to claim 1, wherein: be provided with splashproof stopper (141) in bleeder vent (14), be provided with spring (142) on splashproof stopper (141), splashproof stopper (141) pass through spring (142) and bleeder vent (14) elastic connection.

5. The apparatus for preparing o-cyanophenol according to claim 1, wherein: the reflux pipe (15) is an L-shaped stainless steel pipe, the reflux pipe (15) is composed of a vertical stainless steel pipe and an inclined stainless steel pipe, the vertical stainless steel pipe is communicated with the reaction kettle (1), the inclined stainless steel pipe is communicated with the recovery kettle (2), and the condensing pipe (16) is arranged in the inclined stainless steel pipe.

6. The apparatus for preparing o-cyanophenol according to claim 1, wherein: and a sodium hydroxide solution (31) is arranged in the purification chamber (3), and the height of the sodium hydroxide solution (31) is higher than that of an outlet of the exhaust pipe (21).

7. The apparatus for preparing o-cyanophenol according to claim 1, wherein: the adsorption plate (32) is formed by pressing active carbon, and an air suction opening of the vacuum pump (33) is communicated with the upper end face of the purification chamber (3).

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