CN217854602U

CN217854602U - Toluene recovery device is used in production of methyl p-tolyl sulfone

Info

Publication number: CN217854602U
Application number: CN202221525577.0U
Authority: CN
Inventors: 周家林; 周立冬; 吉祖根
Original assignee: Hubei Huaxing New Material Technology Co ltd
Current assignee: Hubei Huaxing New Material Technology Co ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-11-22
Anticipated expiration: 2032-06-17

Abstract

The utility model belongs to the technical field of toluene recovery device technique and specifically relates to a toluene recovery device is used in production of methyl p sulfone base toluene, including the alembic, the bottom fixed mounting of alembic has the base, and the bottom fixed mounting in the alembic outside has the inlet pipe, and fixed mounting has a control valve on the inlet pipe, and the top fixed mounting of alembic has the steam pipe, and the outside cladding of steam pipe has the insulation cover, and the exit end of steam pipe is connected with the condensation subassembly, in order to become liquid with toluene steam condensation. The utility model discloses can be so that toluene steam changes can be transformed into liquid state completely, and the S type passageway that the guide plate formed can prolong the contact time of cold water and heat exchange tube, and then improves the heat exchange efficiency between toluene steam and the cold water.

Description

Toluene recovery device is used in production of methyl p-tolyl sulfone

Technical Field

The utility model relates to a toluene recovery unit technical field especially relates to a toluene recovery unit is used in production of methyl p-tolyl sulfone base toluene.

Background

P-methylsulfonyl toluene, also called methylsulfonyl toluene, is mainly used as a medical intermediate, and a toluene recovery device is needed to be used for recovering toluene from waste liquid in the production process of the p-methylsulfonyl toluene; the toluene recovery device in the traditional technology has the defects of low toluene recovery efficiency and low condensing speed, and the use effect is influenced;

to this, chinese patent publication is CN202020814783.8 and discloses "a toluene recovery unit for propionyl triketone production, including being convenient for retrieve mechanism, waste liquid inlet pipe, connector and fixed bolster, the fixed bolster upside is provided with the mechanism of being convenient for to retrieve, the connector is installed on waste liquid inlet pipe right side, the connector right side is provided with the mechanism of being convenient for to retrieve, the mechanism of being convenient for to retrieve includes retort, steam pipe, condenser, toluene collection box, compressor, insulation cover, electrical heating stick and back flow, the retort is installed to the fixed bolster upside, retort annular side cover is equipped with the insulation cover, electrical heating stick is installed to the inside downside of retort, the retort upside is connected with the steam pipe";

this patent is mainly through condenser pipe cooling to toluene steam, and this kind of cooling method very easily leads to toluene steam can't the complete condensation to make toluene steam leak to the air when discharging and cause air pollution.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of toluene steam existing in the prior art and providing a toluene recovery device for producing methyl sulfonyl toluene.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a toluene recovery unit is used in production of methyl sulfone group toluene, includes the retort, the bottom fixed mounting of retort has the base, the bottom fixed mounting in the retort outside has the inlet pipe, fixed mounting has the control valve on the inlet pipe, the top fixed mounting of retort has the steam pipe, the outside cladding of steam pipe has the heat preservation cover, the exit end of steam pipe is connected with the condensation subassembly, in order to become liquid with the condensation of toluene steam.

Preferably, the outside fixed mounting of retort has manometer and thermometer, the manometer is used for detecting the inboard pressure of retort, the thermometer is used for detecting the inboard temperature of retort.

Preferably, the condensing assembly comprises a condensing tank, a water inlet pipe head, a water outlet pipe head, a water inlet pipe, a water pump, a cold water tank and a water outlet pipe; the utility model discloses a cold water storage tank, including condenser, inlet pipe head, outlet pipe head, inlet pipe head fixed mounting is in the one end at condenser top, outlet pipe head fixed mounting is in the one end of condenser bottom, the exit end and the inlet pipe head fixed connection of inlet pipe, the entrance point and the water pump switch-on of inlet pipe, the entrance point of water pump passes through pipe and the inside switch-on of cold water storage tank, the entrance point fixed mounting of outlet pipe is overhead at the outlet pipe, the exit end and the cold water storage tank switch-on of outlet pipe.

Preferably, the condensing assembly further comprises a flow guide piece, wherein the flow guide piece comprises a toluene steam inlet pipe, a toluene liquid outlet pipe, two partition plates, a plurality of heat exchange pipes and a plurality of flow guide plates; two the baffle is fixed mounting respectively at the inboard both ends of condensing box, the one end of toluene steam induction pipe and the exit end switch-on of steam pipe, the other end and the condensing box entrance point switch-on of toluene steam induction pipe, toluene liquid contact tube fixed mounting is at the exit end of condensing box, and is a plurality of heat exchange tube fixed mounting just runs through two baffles between two baffles, and is a plurality of the both ends of heat exchange tube communicate with each other with toluene steam induction pipe, toluene liquid contact tube respectively, and is a plurality of the crisscross fixed mounting of guide plate along the horizontal direction is in the condensing box, and forms an S type passageway.

Preferably, a collection box is fixedly mounted at the outlet end of the toluene liquid delivery pipe so as to recover liquid toluene.

The utility model provides a toluene recovery unit is used in production of methyl p-tolyl sulfone group toluene, beneficial effect lies in: toluene steam gets into and can shunt inside each heat exchange tube in the condensate tank, and the water pump is with the leading-in condensate tank of the inside cold water of cold water tank in, cold water and heat exchange tube heat transfer with toluene steam after the heat exchange tube contact to make toluene steam change to can be transformed into liquid state completely, and the S type passageway that the guide plate formed can prolong the contact time of cold water and heat exchange tube, and then improve the heat exchange efficiency between toluene steam and the cold water.

Drawings

FIG. 1 is a schematic structural view of a toluene recovery device for producing p-methylsulfonyltoluene provided by the present invention;

FIG. 2 is a schematic structural diagram of a condensing assembly of a toluene recovery device for producing p-methylsulfonyl toluene in accordance with the present invention;

fig. 3 is the structure schematic diagram of the diversion part of the toluene recovery device for producing p-methylsulfonyl toluene.

In the figure: the device comprises a distillation retort 1, a base 2, a feed pipe 3, a control valve 4, a steam pipe 5, a heat preservation sleeve 6, a pressure gauge 7, a thermometer 8, a condensation component 9, a condensation tank 91, a water inlet pipe head 92, a water outlet pipe head 93, a water inlet pipe 94, a water pump 95, a cold water tank 96, a water outlet pipe 97, a flow guide piece 98, a toluene steam inlet pipe 981, a toluene liquid outlet pipe 982, a partition plate 983, a heat exchange pipe 984, a flow guide plate 985 and a collection box 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example 1:

referring to fig. 1-2, the toluene recovery device for p-methylsulfonyl toluene production comprises a distillation retort 1, wherein a base 2 is fixedly mounted at the bottom of the distillation retort 1, a feed pipe 3 is fixedly mounted at the bottom end of the outer side of the distillation retort 1, a control valve 4 is fixedly mounted on the feed pipe 3, a steam pipe 5 is fixedly mounted at the top of the distillation retort 1, a heat insulation sleeve 6 is wrapped on the outer side of the steam pipe 5, and the outlet end of the steam pipe 5 is connected with a condensation assembly 9 to condense toluene steam into liquid; the outside fixed mounting of retort 1 has manometer 7 and thermometer 8, and manometer 7 is used for detecting the pressure of retort 1 inboard, and thermometer 8 is used for detecting the temperature of retort 1 inboard.

The condensing assembly 9 comprises a condensing tank 91, a water inlet pipe head 92, a water outlet pipe head 93, a water inlet pipe 94, a water pump 95, a cold water tank 96 and a water outlet pipe 97; the inlet pipe head 92 is fixedly installed at one end of the top of the condensation tank 91, the outlet pipe head 93 is fixedly installed at one end of the bottom of the condensation tank 91, the outlet end of the inlet pipe 94 is fixedly connected with the inlet pipe head 92, the inlet end of the inlet pipe 94 is communicated with the water pump 95, the inlet end of the water pump 95 is communicated with the inside of the cold water tank 96 through a guide pipe, the inlet end of the water outlet pipe 97 is fixedly installed on the outlet pipe head 93, and the outlet end of the water outlet pipe 97 is communicated with the cold water tank 96.

The working process comprises the following steps: firstly, introducing waste liquid into a distillation retort 1 through a feeding pipe 3 for heating distillation, and observing the pressure and temperature value inside the distillation retort 1 through a pressure gauge 7 and a temperature gauge 8 to ensure that the inside of the distillation retort 1 is always at safe pressure and temperature; toluene liquid is heated and converted into a steam state, and then is introduced into the condensation component 9 through the steam pipe 5, and the heat-insulating sleeve 6 can ensure that toluene steam is rapidly introduced into the condensation component 9 in the steam state for rapid condensation;

example 2:

referring to fig. 1 to 3, as another preferred embodiment of the present invention, the difference from embodiment 1 is that the condensing assembly 9 further includes a guide member 98, and the guide member 98 includes a toluene vapor introduction pipe 981, a toluene liquid introduction pipe 982, two partition plates 983, a plurality of heat exchange pipes 984, and a plurality of guide plates 985; two clapboards 983 are respectively and fixedly installed at two ends of the inner side of the condenser tank 91, one end of a toluene steam inlet pipe 981 is communicated with the outlet end of a steam pipe 5, the other end of the toluene steam inlet pipe 981 is communicated with the inlet end of the condenser tank 91, a toluene liquid outlet pipe 982 is fixedly installed at the outlet end of the condenser tank 91, a plurality of heat exchange pipes 984 are fixedly installed between the two clapboards 983 and penetrate through the two clapboards 983, two ends of the heat exchange pipes 984 are respectively communicated with the toluene steam inlet pipe 981 and the toluene liquid outlet pipe 982, and a plurality of guide plates 985 are fixedly installed in the condenser tank 91 in a staggered mode along the horizontal direction and form an S-shaped channel; the outlet end of the toluene liquid outlet pipe 982 is fixedly provided with a collecting box 10 for recovering the liquid toluene.

The working process comprises the following steps: firstly, leading waste liquid into a distillation retort 1 through a feeding pipe 3 for heating distillation, and observing the pressure and temperature values in the distillation retort 1 through a pressure gauge 7 and a thermometer 8 to ensure that the interior of the distillation retort 1 is always at safe pressure and temperature; toluene liquid is heated and converted into a steam state, then the toluene liquid is led into the condensing assembly 9 through the steam pipe 5, and the heat-insulating sleeve 6 can ensure that the toluene steam is led into the condensing assembly 9 quickly in the steam state;

toluene steam gets into and can shunt inside each heat exchange tube 984 in the condensing tank 91, and water pump 95 is with the leading-in condensing tank 91 of the inside cold water of cold water tank 96, cold water and heat exchange tube 984 contact back and toluene steam heat transfer, thereby make toluene steam change to be converted into liquid state completely, and the S type passageway that guide plate 985 formed can prolong cold water and heat exchange tube 984' S contact time, and then improve the heat exchange efficiency between toluene steam and the cold water, toluene liquid carries out recycle in leading-in collecting box 10 at last.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a to toluene recovery unit for methyl sulfone base toluene production, includes retort (1), the bottom fixed mounting of retort (1) has base (2), its characterized in that, the bottom fixed mounting in retort (1) outside has inlet pipe (3), fixed mounting has control valve (4) on inlet pipe (3), the top fixed mounting of retort (1) has steam pipe (5), the outside cladding of steam pipe (5) has heat preservation cover (6), the exit end of steam pipe (5) is connected with condensation subassembly (9), in order to become toluene steam condensation liquid.

2. The toluene recovery device for p-methylsulfonyltoluene production according to claim 1, wherein a pressure gauge (7) and a temperature gauge (8) are fixedly mounted on the outer side of the distillation tank (1), the pressure gauge (7) is used for detecting the pressure on the inner side of the distillation tank (1), and the temperature gauge (8) is used for detecting the temperature on the inner side of the distillation tank (1).

3. The toluene recovery device for p-methylsulfonyltoluene production according to claim 1, wherein the condensation assembly (9) comprises a condensation tank (91), a water inlet pipe head (92), a water outlet pipe head (93), a water inlet pipe (94), a water pump (95), a cold water tank (96) and a water outlet pipe (97); water inlet pipe head (92) fixed mounting is in the one end at condensate box (91) top, go out water pipe head (93) fixed mounting in the one end of condensate box (91) bottom, the exit end and water inlet pipe head (92) fixed connection of inlet tube (94), the entrance point and the switch-on of water pump (95) of inlet tube (94), the entrance point of water pump (95) passes through pipe and the inside switch-on of cold water storage cistern (96), the entrance point fixed mounting of outlet pipe (97) is on water outlet pipe head (93), the exit end and the switch-on of cold water storage cistern (96) of outlet pipe (97).

4. The toluene recovery device for producing p-methylsulfonyl toluene according to claim 3, wherein the condensation assembly (9) further comprises a flow guide member (98), and the flow guide member (98) comprises a toluene vapor inlet pipe (981), a toluene liquid outlet pipe (982), two partition plates (983), a plurality of heat exchange pipes (984) and a plurality of flow guide plates (985); two baffle (983) fixed mounting is at the both ends of condensing box (91) inboard respectively, the one end of toluene steam inlet tube (981) and the exit end switch-on of steam pipe (5), the other end and condensing box (91) entrance point switch-on of toluene steam inlet tube (981), toluene liquid delivery pipe (982) fixed mounting is at the exit end of condensing box (91), and is a plurality of heat exchange tube (984) fixed mounting just runs through two baffle (983) between two baffle (983), and is a plurality of the both ends of heat exchange tube (984) communicate with each other with toluene steam inlet tube (981), toluene liquid delivery pipe (982) respectively, and are a plurality of baffle (985) along the crisscross fixed mounting of horizontal direction in condensing box (91) and form an S type passageway.

5. The toluene recovery device for p-methylsulfonyltoluene production according to claim 4, wherein the outlet end of the toluene liquid outlet pipe (982) is fixedly provided with a collection box (10) for recovering liquid toluene.