Drying device for TBTD production

Abstract

The utility model provides a TBTD production drying device which comprises a reaction kettle, a washing kettle and a drying kettle, stirring structures are arranged inside the washing kettle and the drying kettle, jackets are arranged outside the washing kettle and the drying kettle, the top end of the washing kettle is connected with a discharging pipeline of the reaction kettle, and the top end of the washing kettle is connected with a soft water adding pipeline, a nitrogen pipeline and a workshop waste gas main pipeline. The lower part of the washing kettle is connected with a drying kettle through a washing kettle discharging pipeline, the top end of the drying kettle is connected with a workshop waste gas main pipeline and a nitrogen pipeline, the top end of the drying kettle is connected with a tail gas condenser, and the tail gas condenser is connected with a drying wastewater receiving tank; the TBTD is heated and dried through the steam coil pipe and the jacket, heating of the TBTD is more uniform, heat sources of the steam coil pipe and the jacket come from the drying hot water tank, the temperature during heating is guaranteed, temperature control is easier, the drying efficiency is higher, energy consumption is lower, heating is conducted simultaneously inside and outside, the heating efficiency is improved, and rapid drying of the TBTD is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical fields related to chemical production, especially to a TBTD production drying device. BACKGROUND

[0002] TBTD (Tetrabutylammonium Bis(thioperoxodiformate)) is an organic compound. Colorless to pale yellow solid. Soluble in non-polar solvents, such as ethanol, acetone, etc. TBTD is a strong oxidant and can be used as a reactive oxidizing agent in organic synthesis reactions. It is often used in oxidative embrittlement reactions, heterocyclic synthesis reactions, olefin anion polymerization, etc. It is also used in the preparation of explosives and has some use in the field of explosives. It can also be used as a super-accelerator for natural rubber and synthetic rubber, and as a vulcanizing agent.

[0003] The applicant optimizes the condensation reaction in the alkaline aqueous phase environment by taking di-n-butylamine and carbon disulfide as the main raw materials. Hydrogen peroxide (H2O2) is used as an oxidizing agent to replace traditional chlorine or sodium hypochlorite or potassium ferricyanide, reducing high-salt wastewater discharge. The reaction liquid is separated by standing, and the water phase and oil phase are removed. The oil phase is washed with water several times to remove residual lye and unreacted raw materials. Although this method can reduce VOCs emissions, the material produced directly is in oil phase rather than solid. It is not convenient to dry using traditional air circulation drying technology. Therefore, a new drying device needs to be developed. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of TBTD production drying device, using steam heated water to dry, energy consumption is low, material is evenly heated, processing cycle is short, can realize the rapid drying of TBTD.

[0005] Therefore, the utility model employs the technical scheme as follows: a kind of TBTD production drying device, including drying kettle, the inside of the drying kettle is provided with stirring structure, outside is provided with jacket, the top of the drying kettle is provided with oil phase inlet line and the oil phase discharge line of washing kettle are connected, the top of the drying kettle is provided with nitrogen gas pipeline, non-condensable gas pipeline and the waste gas pipeline connected with workshop waste gas main pipe, the discharge line of the bottom of the drying kettle is connected with TBTD packaging scale, the non-condensable gas pipeline of the drying kettle is connected with the gas inlet of tail gas condenser, the condensate outlet of the tail gas condenser is connected with drying wastewater receiving tank, the bottom outlet of the drying wastewater receiving tank is connected with wastewater collection pool the heating coil is arranged in the drying kettle, the steam coil is staggered with stirring structure, the jacket is provided with hot water inlet line and the hot water outlet of drying hot water tank is connected, the hot water inlet end of the heating coil is connected with the hot water outlet of drying hot water tank.

[0006] The condensate of the secondary butylamine and water vapor in the drying process is recovered by the tail gas condenser, so as to reduce the waste gas emission pollution.

[0007] In the scheme, the lower part of the jacket is provided with a hot water inlet pipeline, and the upper part is provided with an outlet pipeline, the heating coil and the hot water inlet pipeline of the jacket are connected with the hot water outlet of the drying hot water tank through a drying hot water supply pump.

[0008] In the scheme, the top end of the drying hot water tank is provided with a soft water inlet pipe, the drying hot water tank is provided with a steam coil, the top steam inlet of the steam coil is connected with a low-pressure steam car room main pipe, the drying hot water tank is also provided with a stirring structure, and the steam coil and the stirring structure are arranged staggeredly.

[0009] In the scheme, the outlet end of the drying hot water outlet pipe of the heating coil is connected with the soft water inlet pipe of the drying hot water tank.

[0010] In the scheme, the tail gas condenser comprises a shell layer, a circulating condensate water pipe layer is arranged in the shell layer, and a vacuum buffer tank is connected to the tail end of the shell layer of the tail gas condenser and the drying waste water receiving tank.

[0011] In the scheme, the drying waste water receiving tank is provided with a nitrogen gas pipeline and a waste gas pipeline connected with a workshop waste gas main pipe.

[0012] The oil phase TBTD after washing is introduced into the drying kettle, the TBTD is heated and dried by the steam coil arranged in the drying kettle and the jacket arranged outside the drying kettle, the TBTD is heated more uniformly, the heat sources of the steam coil and the jacket are all from the drying hot water tank, the temperature during heating is ensured, temperature control is easier, the drying efficiency is higher, the low-temperature steam in the workshop is used to heat water for drying, the energy consumption is low, the inside and outside are heated at the same time, the heating efficiency is improved, and the rapid drying of the TBTD is realized. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0014] The utility model will be further described in connection with the drawings and examples.

[0015] AsFigure 1 As shown, a TBTD production drying device, including a drying kettle 1, the inside of the drying kettle 1 is provided with a stirring structure 2, the outside is provided with a jacket 3, the lower part of the jacket 3 is provided with a hot water inlet pipeline, the upper part is provided with an outlet pipeline, a heating coil 105, and the hot water inlet pipeline of the jacket 3 is connected with the hot water outlet of the drying hot water tank 7 through the drying hot water supply pump 701. The drying hot water tank 7 heats the hot water to provide heat for the drying kettle 1. The inside of the drying kettle 1 is provided with a heating coil 105, which is arranged staggered with the stirring structure 2. The outlet end of the drying hot water outlet pipe of the heating coil 105 is connected to the soft water inlet pipe 702 of the drying hot water tank 7. The water is recycled, the consumption of water is reduced, and the discharge amount of waste water is finally reduced.

[0016] The top end of the drying hot water tank 7 is provided with a soft water inlet pipe 702, the inside of the drying hot water tank 7 is provided with a steam coil 703, the top end steam inlet of the steam coil 703 is connected with a low-pressure steam car room main pipe 704, (the steam condensate water of the steam coil 703 returns to the workshop steam condensate water recovery tank), the inside of the drying hot water tank 7 is also provided with a stirring structure 2 (to ensure uniform heating), and the steam coil 703 is arranged staggered with the stirring structure 2 (to ensure no interference).

[0017] The top end of the drying kettle 1 is provided with an oil phase inlet pipeline 101 connected with the oil phase outlet pipeline of the washing kettle, the top end of the drying kettle 1 is provided with a nitrogen gas pipeline 102, a non-condensable gas pipeline 103, and a waste gas pipeline 104 connected with the workshop waste gas main pipe, the bottom end of the drying kettle 1 is connected with a TBTD packaging scale 4, the non-condensable gas pipeline 103 of the drying kettle 1 is connected with the gas inlet of the tail gas condenser 5, the condensate outlet of the tail gas condenser 5 is connected with a drying waste water receiving tank 6, the bottom end outlet of the drying waste water receiving tank 6 is connected with a waste water collection pool, the inside of the drying kettle 1 is provided with a heating coil 105, the steam coil 703 is arranged staggered with the stirring structure 2, the jacket 3 is provided with a hot water inlet pipeline connected with the hot water outlet of the drying hot water tank 7, and the hot water inlet end of the heating coil 105 is connected with the hot water outlet of the drying hot water tank 7.

[0018] The tail gas condenser 5 is an existing condenser, comprising a shell layer (an air inlet is arranged at the top end of the shell layer, and a condensed liquid outlet is arranged at the bottom end), a circulating condensed water pipe layer is arranged in the shell layer (the pipe layer can be a vertically arranged condensed water coil pipe, and circulating condensed water inlets and outlets are arranged at both ends of the pipe layer), and a vacuum buffer tank is connected to the tail end of the shell layer of the tail gas condenser 5 and the drying waste water receiving tank 6. The vacuum buffer tank is connected to a vacuum pipe, vacuum drying is adopted to prevent backflow, and the vacuum buffer tank can also be used for gas-liquid separation to achieve stable vacuum degree and improve drying efficiency. The condensed water inlet of the tail gas condenser 5 is connected to a circulating upper water workshop main pipeline, and the condensed water outlet is connected to a circulating lower water workshop return water main pipeline. The drying waste water receiving tank 6 is connected to a nitrogen gas pipeline and a workshop waste gas main pipeline. The waste gas in the drying kettle 1 and nitrogen gas are discharged through the nitrogen gas pipeline 102 and the workshop waste gas main pipeline for centralized treatment.

[0019] The di-n-butylamine and water vapor in the drying process are condensed and recovered through the non-condensable gas pipeline 103 into the tail gas condenser 5, so as to reduce waste gas emission pollution. In order to further improve the drying efficiency, a vacuum pipe can be connected to the condenser. The jacket 3 arranged outside the drying kettle 1 is heated at the same time, and the heating coil 105 arranged in the drying kettle 1 is also heated, so as to improve the drying efficiency.

[0020] The oil phase TBTD enters the drying kettle 1, nitrogen gas is introduced into the drying kettle 1 to discharge the tail gas in the drying kettle 1 along with the oil phase TBTD through the workshop waste gas main pipeline and the tail gas condenser 5, the steam coil 703 arranged in the drying kettle 1 and the jacket 3 arranged outside the drying kettle 1 are used to heat and dry the TBTD, the TBTD is heated more uniformly, the heat sources of the steam coil 703 and the jacket 3 are both from the drying hot water tank 7, the temperature during heating is ensured, temperature control is easier, the drying efficiency is higher, low-temperature steam in the workshop is used to heat water for drying, energy consumption is low, the inside and outside are heated at the same time, the heating efficiency is improved, rapid drying of the TBTD is realized, and the dried TBTD is packaged through the TBTD packaging scale 4.

[0021] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A TBTD production drying apparatus, comprising a drying kettle (1), wherein the drying kettle (1) is provided with a stirring structure (2) inside and a jacket (3) outside, characterized in that: The top of the drying kettle (1) is provided with an oil phase inlet pipeline (101) connected to the oil phase discharge pipeline of the washing kettle. The top of the drying kettle (1) is provided with a nitrogen pipeline (102), a non-condensable gas pipeline (103), and an exhaust gas pipeline (104) connected to the workshop exhaust gas main pipeline. The discharge pipeline at the bottom of the drying kettle (1) is connected to a TBTD packaging scale (4). The non-condensable gas pipeline (103) of the drying kettle (1) is connected to the inlet of the tail gas condenser (5). The condensate outlet of the condenser (5) is connected to the drying wastewater receiving tank (6), and the bottom outlet of the drying wastewater receiving tank (6) is connected to the wastewater collection pool. The drying kettle (1) is equipped with a heating coil (105), which is staggered from the stirring structure (2). The jacket (3) is equipped with a hot water inlet pipeline connected to the hot water outlet of the drying hot water tank (7). The hot water inlet end of the heating coil (105) is connected to the hot water outlet of the drying hot water tank (7).

2. The TBTD production drying apparatus according to claim 1, characterized in that: The jacket (3) is provided with a hot water inlet pipeline at the lower part and a hot water outlet pipeline at the upper part. The heating coil (105) and the hot water inlet pipeline of the jacket (3) are both connected to the hot water outlet of the drying hot water tank (7) through the drying hot water supply pump (701).

3. A TBTD production drying apparatus according to claim 2, characterized in that: The top of the drying hot water tank (7) is provided with a soft water inlet pipe (702). The drying hot water tank (7) is provided with a steam coil (703). The steam inlet at the top of the steam coil (703) is connected to the low-pressure steam workshop main pipe (704). The drying hot water tank (7) is also provided with a stirring structure (2). The steam coil (703) is staggered from the stirring structure (2). The steam outlet of the steam coil (703) is connected to the steam condensate main pipeline (705).

4. A TBTD production drying apparatus according to claim 3, characterized in that: The outlet ends of the drying hot water outlet pipes of the jacket (3) and the heating coil (105) are both connected to the soft water inlet pipe (702) of the drying hot water tank (7).

5. A TBTD production drying apparatus according to claim 4, characterized in that: The exhaust gas condenser (5) includes a shell layer, and a circulating condensate pipe layer is provided inside the shell layer. Vacuum buffer tanks are connected to the end of the shell layer of the exhaust gas condenser (5) and the drying wastewater receiving tank (6).

6. A TBTD production drying apparatus according to claim 5, characterized in that: The drying wastewater receiving tank (6) is equipped with a nitrogen pipeline (601) and an exhaust gas pipeline (602) connected to the workshop exhaust gas main pipe.

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