CN210543453U

CN210543453U - Organic solvent tail gas recovery device

Info

Publication number: CN210543453U
Application number: CN201921357737.3U
Authority: CN
Inventors: 于朝晖; 卢群松; 高伟博; 常坦然
Original assignee: Yunnan Hanmeng Pharmaceutical Co Ltd
Current assignee: Yunnan Hanmeng Pharmaceutical Co Ltd
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-05-19
Anticipated expiration: 2029-08-21

Abstract

The utility model relates to an organic solvent tail gas recovery device, belonging to the technical field of condensing equipment, which comprises a condensing outer tube, an S-shaped condensing tube, a condensed water inlet buffer cavity, a cooler and a circulating pump; the upper part of the right end of the condensing outer pipe is provided with a non-condensable gas outlet pipe, the bottom of the condensing outer pipe is provided with a condensed liquid outlet pipe, and the left end of the condensing outer pipe is provided with a tail gas inlet pipe; the condensed water inlet buffer cavity is of a cavity structure, a baffle is arranged between the condensed water buffer cavity and the condensing outer tube, and an S-shaped condensing tube inlet through hole is formed in the baffle; the S-shaped condensing pipe penetrates through the condensing outer pipe to be communicated with the cooler through a pipeline, and the circulating pump is connected between the cooler and the condensate water inlet buffer cavity through a pipeline; the utility model discloses can effectively improve condensation efficiency, and the shock resistance of condenser pipe is strong, and the condenser pipe can realize stable control at intraductal pressure of use.

Description

Organic solvent tail gas recovery device

Technical Field

The utility model belongs to the technical field of condensing equipment, specific theory relates to an organic solvent tail gas recovery unit.

Background

Need use a large amount of organic solvents in natural products separation and purification process, when the industrialization is big produced, the normal supply of required solvent when guaranteeing production, need purchase a large amount of solvents in advance and save in the organic solvent storage tank, organic solvent has stronger volatility mostly, if volatile tail gas is not in time to retrieve in the storage process, not only cause organic solvent extravagant, and can the polluted environment, consequently can install tail gas recovery unit in organic solvent storage tank pipe connection, be used for retrieving volatile solvent, regard as organic solvent tail gas recovery unit with the condenser pipe, it has higher condensation efficiency to need the condenser pipe, and the operation is stable. Most of the existing condenser pipes adopt straight pipe structures, and the condenser pipe has the defects of short retention time of cooling medium in the condenser pipe, poor condensation effect and large consumption of condensed water; meanwhile, at the beginning stage of the use of the condenser pipe with a straight pipe structure, the condenser pipe is affected by thermal expansion and cold contraction, and is extremely easy to crack. In addition, the existing condenser pipe is mostly a condenser pipe directly conveying cooling liquid by a pump, the pressure of the condenser pipe is too large, and the problems that the condenser pipe vibrates too large and is even cracked due to unstable conveying flow of the conveying pump are often caused.

Disclosure of Invention

In order to overcome the problem that exists among the background art, the utility model provides an organic solvent tail gas recovery unit can effectively improve condensation, the recovery efficiency of organic solvent tail gas, and the shock resistance of condenser pipe is strong, and the condenser pipe can realize stable control at intraductal pressure in the use.

The left and right terms used in this specification are used for the convenience of accurately expressing the structure of the present invention, and the present invention is not limited by the terms in terms of terms in actual use.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

an organic solvent tail gas recovery device comprises a condensation outer pipe 1, an S-shaped condensation pipe 2, a condensation water inlet buffer cavity 3, a cooler 4 and a circulating pump 5; the upper part of the right end of the condensation outer pipe 1 is provided with a non-condensable gas outlet pipe 6, the bottom of the condensation outer pipe is provided with a condensate outlet pipe 7, and the left end of the condensation outer pipe is provided with an organic solvent tail gas inlet pipe 8; the condensed water inlet buffer cavity 3 is arranged at the right end of the condensing outer pipe 1 and is of a cavity structure, a partition plate 10 is arranged between the condensed water inlet buffer cavity 3 and the condensing outer pipe 1, and an S-shaped condensing pipe 2 inlet through hole is formed in the partition plate 10; the S-shaped condensation pipe 2 penetrates through the condensation outer pipe 1 and is communicated with the cooler 4 through a pipeline; the circulating pump 5 is connected between the cooler 4 and the condensed water inlet buffer cavity 3 through a pipeline; the condensing outer tube 1 is internally provided with guide plates 9, two adjacent guide plates 9 are arranged in a staggered manner, and a gas phase channel is reserved between the guide plates 9 and the inner wall of the condensing outer tube 1.

Preferably, the S-shaped condensation pipes are arranged in the condensation outer pipe 1 in a staggered mode, the S-shaped condensation pipes can be arranged according to the quantity of tail gas, and the cooling efficiency is improved along with the increase of the quantity of the condensation pipes.

Preferably, the organic solvent tail gas inlet pipe 8 is inserted into the lower part of the condensing outer pipe 1.

Preferably, the organic solvent tail gas recovery device further comprises a condensed water collection cavity 11, the condensed water collection cavity 11 is arranged at the left end of the condensation outer pipe 1 and is of a cavity structure, a partition plate 10 is arranged between the condensed water collection cavity 11 and the condensation outer pipe 1, and an outlet through hole of the S-shaped condensation pipe 2 is formed in the partition plate 10.

Preferably, a U-shaped pipe 12 is arranged on an inlet pipe of the circulating pump 5.

The utility model has the advantages that:

1. the utility model discloses a set up the condenser pipe into "S" type and not only increased the dwell time of condensate in the condenser pipe, strengthened the condensation effect, and use the initial stage at the condenser, the condenser pipe of "S" type can effectively be confronted because of expend with heat and contract with cold to the influence of condenser pipe, has effectively avoided the condenser pipe to set up many "S" type condenser pipes because of expend with heat and contract with cold' S damage that causes in the use initial stage, its staggered arrangement has improved cooling efficiency.

2. The utility model discloses a conveying flow and the influence of pressure fluctuation to the condenser pipe that the comdenstion water import cushion chamber's setting can effectively be avoided causing because of the unstable delivery pump flow.

3. The utility model discloses import pipe installation U type pipe at the circulating pump can effectively avoid when the liquid level is low in the condenser, and the circulating pump is emptied and therefore the pump flow that leads to is undulant to the influence of condenser pipe.

4. The utility model discloses a set up the guide plate to reserve the space between guide plate and condenser pipe, guide the gaseous flow direction in the condenser pipe, gaseous from the bottom up, from controlling to flowing, extension cold and hot exchange time improves cooling efficiency.

Drawings

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

FIG. 2 is a schematic view of the structure of the partition board of the present invention;

FIG. 3 is a schematic view of the structure of the deflector of the present invention;

in the figure, 1-a condensation outer pipe, 2-an S-shaped condensation pipe, 3-a condensed water inlet buffer cavity, 4-a cooler, 5-a circulating pump, 6-a non-condensable gas outlet pipe, 7-a condensed liquid outlet pipe, 8-a tail gas inlet pipe, 9-a guide plate, 10-a partition plate, 11-a condensed water collecting cavity and 12-a U-shaped pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail a preferred embodiment of the present invention with reference to the accompanying drawings to facilitate understanding of the skilled person.

As shown in fig. 1-3, the organic solvent tail gas recovery device comprises an outer condensing pipe 1, an "S" shaped condensing pipe 2, a condensed water inlet buffer cavity 3, a cooler 4, a circulating pump 5, and a condensed water collecting cavity 11; the upper part of the right end of the condensing outer pipe 1 is provided with a non-condensable gas outlet pipe 6 for discharging non-condensable gas and non-condensed gas; the bottom of the condenser is provided with a condensate outlet pipe 7 for recovering the condensed tail gas (namely condensate); the left end is provided with a tail gas inlet pipe 8 for introducing organic solvent tail gas to be treated into the condenser pipe.

Condensation outer tube 1 is inside to be equipped with guide plate 9, has seted up the condenser through-hole on the guide plate 9, and "S" type condenser pipe 2 passes from the through-hole of guide plate 9, and two adjacent guide plate 9 staggered arrangement leave the gas phase passageway (as figure 3) between guide plate 9 and the 1 inner wall of condensation outer tube, and tail gas import pipe 8 inserts the lower part of condensation outer tube 1, so, organic solvent tail gas under guide of guide plate 9, dwell time extension in the shell side, and then improved the utility model discloses a heat exchange efficiency. Tests prove that after the guide plate 9 is added, the heat exchange efficiency of the condenser pipe is improved by 30-40%.

The right end of the condensation outer pipe 1 is provided with a condensate water inlet buffer cavity 3, the left end of the condensation outer pipe 1 is provided with a condensate water collecting cavity 11, the condensate water inlet buffer cavity 3 and the condensate water collecting cavity 11 which are both in a cavity structure are separated from the condensation outer pipe 1 through a baffle 10, an inlet and outlet through hole of an S-shaped condensation pipe 2 is formed in the baffle 10, condensate enters the condensate water inlet buffer cavity 3 firstly and then enters the S-shaped condensation pipe 2, the condensate enters the condensate water collecting cavity 11 firstly after coming out of the S-shaped condensation pipe 2 and then is connected to the cooler 4 through a pipeline from the top of the condensate water collecting cavity 11; in the condenser, the condensate liquid passes through the tube side, and the organic solvent tail gas passes through the shell side. The condensed water from the S-shaped condensation pipe 2 is gathered to a condensed water collecting cavity 11 and then enters a cooler 4, the condensed water in the cooler 4 is circularly cooled, and the power of the cooler 4 is preferably that the temperature of the condensed water in the S-shaped condensation pipe 2 can be maintained between 7 and 12 ℃. The condensate cooled by the cooler 4 is conveyed to the condensate inlet buffer cavity 3 by a circulating pump 5 through a pipeline, and the condensate enters the S-shaped condensation pipe 2 after being buffered in the condensate inlet buffer cavity 3. The condensate is collected to the condensate collecting cavity 11 after heat exchange in the condensation pipe and is sent to the cooler 4 for cooling. The inlet of the circulating pump 5 is provided with a U-shaped pipe 12, the U-shaped pipe can ensure that no empty pipe or half pipe exists in the pipeline all the time, and the influence of the circulating pump 5 on the S-shaped condenser pipe 2 caused by emptying and the fluctuation of the pump flow caused by the empty pipe or the half pipe can be effectively avoided when the liquid level in the condenser is low, so that the influence on the S-shaped condenser pipe 2 caused by the fluctuation of the flow is effectively avoided. The S-shaped condensing pipes are arranged in the condensing outer pipe 1 in a staggered mode, the cooling efficiency is improved along with the increase of the number of the condensing pipes, but after the number of the condensing pipes exceeds a certain number, the cooling efficiency is not improved greatly, and 5-10 condensing pipes are generally arranged.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. The utility model provides an organic solvent tail gas recovery unit which characterized in that: the organic solvent tail gas recovery device comprises a condensation outer pipe (1), an S-shaped condensation pipe (2), a condensed water inlet buffer cavity (3), a cooler (4) and a circulating pump (5); the upper part of the right end of the condensation outer pipe (1) is provided with a non-condensable gas outlet pipe (6), the bottom of the condensation outer pipe is provided with a condensate outlet pipe (7), and the left end of the condensation outer pipe is provided with an organic solvent tail gas inlet pipe (8); the condensed water inlet buffer cavity (3) is arranged at the right end of the condensing outer pipe (1) and is of a cavity structure, a partition plate (10) is arranged between the condensed water inlet buffer cavity (3) and the condensing outer pipe (1), and an S-shaped condensing pipe (2) inlet through hole is formed in the partition plate (10); the S-shaped condensing pipe (2) penetrates through the condensing outer pipe (1) and is communicated with the cooler (4) through a pipeline; the circulating pump (5) is connected between the cooler (4) and the condensed water inlet buffer cavity (3) through a pipeline; the condensation outer tube (1) is internally provided with guide plates (9), two adjacent guide plates (9) are arranged in a staggered mode, and a gas phase channel is reserved between each guide plate (9) and the inner wall of the condensation outer tube (1).

2. The organic solvent tail gas recovery device according to claim 1, wherein: the organic solvent tail gas inlet pipe (8) is inserted into the lower part of the condensing outer pipe (1).

3. The organic solvent tail gas recovery device according to claim 1, characterized in that: organic solvent tail gas recovery unit still include the comdenstion water and collect chamber (11), the comdenstion water is collected chamber (11) and is set up in the left end of condensation outer tube (1), for the cavity structure, the comdenstion water is collected and is equipped with between chamber (11) and condensation outer tube (1) baffle (10), has seted up "S" type condenser pipe (2) outlet through hole on baffle (10).

4. The organic solvent tail gas recovery device according to claim 1, wherein: and a U-shaped pipe (12) is arranged on an inlet pipe of the circulating pump (5).

5. The organic solvent tail gas recovery device according to claim 1, wherein: the S-shaped condensing pipes (2) are arranged in the condensing outer pipe (1) in a staggered mode.