Energy-saving condensing device for organic solvent recovery

Abstract

The application relates to the technical field of organic solvent recovery, and discloses an energy-saving condensing device for organic solvent recovery, which comprises a condensing box, a precooling box is fixedly installed on one side of the condensing box, the condensing box comprises a box shell, a circulating pump is arranged at the upper end of the box shell, a plurality of inclined grooves are arranged on one side of the box shell, an air inlet groove is arranged at the upper end of the box shell, two connecting shells are arranged on the outer side of a condensing pipe, a plurality of condensing pipes are rotatably arranged between the two connecting shells, a cleaning assembly is slidably arranged on the outer side of the condensing pipe, two extrusion shells are symmetrically arranged on the outer side of the condensing pipe, the activated carbon fibers on the two sides of the adsorbing cotton utilize the high specific surface area characteristics to quickly adsorb liquid beads on the surface of the condensing pipe, the liquid beads which are not adsorbed are difficult to dissipate due to the airflow speed slowing down under the action of the reverse convection and the baffle, when the adsorbing cotton moves to the extrusion grooves of the extrusion shells, the activated carbon fibers are pressed to discharge the internal condensate water, and the condensate water is recycled to the precooling box for waste gas precooling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of organic solvent recovery, in particular to an energy-saving condensing device for organic solvent recovery. BACKGROUND

[0002] In modern industrial production, organic solvents are widely used in chemical industry, pharmaceutical industry, electronics, printing and many other fields. However, organic solvents have the characteristic of being volatile, and a large amount of them will be emitted into the air during use, not only causing serious waste of resources, but also posing a great threat to the environment and human health. In the traditional organic solvent recovery method, condensation is a common means, and its principle is to use low temperature to convert organic solvent vapor from gas to liquid, thereby realizing recovery. However, the existing condensing device generally has the problem of high energy consumption. On the one hand, in order to achieve a low enough condensing temperature, the refrigeration system needs to consume a large amount of electric energy to compress the refrigerant and maintain a low temperature environment. On the other hand, the heat exchange efficiency of the traditional condensing device is low, and the heat transfer between the exhaust gas and the refrigerant is not sufficient, resulting in that part of the organic solvent vapor is not effectively condensed and is discharged, which not only reduces the recovery efficiency, but also makes the uncondensed vapor need to be treated by other processes, further increasing the energy consumption.

[0003] For example, the existing Chinese patent with publication number CN214892679U discloses a vacuum spiral condenser. A water solution of ethylene glycol with a mass content of 60% is used as cooling liquid, which is injected into the cooling jacket from the cooling liquid inlet and into the cooling cavity from the top of the cooling cavity. The temperature of the cooling liquid is -10°C. Organic solvent gas enters from the inlet of the inner spiral condensing pipe, is cooled by the cooling liquid, and then the condensed liquid of the organic solvent is discharged from the outlet of the inner spiral condensing pipe to the liquid storage tank, where the condensed liquid is collected. The organic solvent gas then enters the outer spiral condensing pipe through the inlet provided at the upper part of the liquid storage tank. The outer spiral condensing pipe is coiled on the outer wall of the cooling cavity. The organic solvent gas in the pipe is further cooled, and the condensed liquid of the gas falls back to the liquid storage tank through the outer spiral condensing pipe. The purified gas is discharged from the outlet of the outer spiral condensing pipe.

[0004] For the above-mentioned and existing related technologies, the inventors believe that the following defects often exist:

[0005] 1. During the condensation process, the condensate beads are half in contact with the condensing pipe and half in contact with the hot vapor, which can cause uneven temperature distribution on the surface of the condensing pipe, affecting the condensation effect. At the same time, this temperature difference can generate thermal stress inside the condensing pipe, especially under the condition of frequent cold and hot alternation. The repeated action of thermal stress can easily cause fatigue cracks in the condensing pipe, reduce the structural strength of the equipment, and eventually cause damage to the equipment.

[0006] 2. During the flow of gas, the liquid beads generated by condensation will be discharged from the condensing box in the form of mist along with the rapidly flowing gas, causing a decrease in condensation efficiency. SUMMARY

[0007] The technical problem solved by the present application is that in the prior art, liquid beads generated by condensation are discharged from the condensing box in the form of mist along with the rapidly flowing gas, resulting in a decrease in condensation efficiency. Therefore, an energy-saving condensing device for organic solvent recovery is provided.

[0008] To achieve the above object, the application adopts the following technical scheme: An energy-saving condensing device for organic solvent recovery, comprising a condensing box, a pre-cooling box is fixedly installed on one side of the condensing box, the condensing box comprises a box shell, a circulating pump is arranged at the upper end of the box shell, one end of the circulating pump is connected with a water chilling unit through a connecting water pipe, an exhaust port is formed in one side of the box shell, when the device is used, waste gas containing organic solvent is introduced into the pre-cooling box for pre-cooling treatment, so as to prevent high-temperature waste gas from directly entering the condensing box, which will cause the equipment to bear a large thermal shock and easily produce thermal stress, resulting in deformation and damage of the equipment, after pre-cooling treatment, the waste gas flows into the condensing box from the upper end of the box shell for condensation treatment, and the high-temperature waste gas is collected after condensation.

[0009] Preferably, a plurality of inclined grooves are formed in one side of the box shell, the inclined grooves are communicated with the pre-cooling box, a liquid discharge groove is formed in the lower end of the box shell, a plurality of baffle plates are fixedly installed in the interior of the exhaust port, and an air inlet groove is formed in the upper end of the box shell, during the process that the waste gas enters the box shell from the pre-cooling box, most of the waste gas flows into the interior of the box shell from the air inlet groove, and a small part of the waste gas is blown upward under the limitation of the inclined grooves, the upward flowing waste gas forms countercurrent convection with the waste gas that is moving downward and is about to be discharged from the exhaust port, and slightly blocks the downward moving waste gas, through actual measurement, the countercurrent convection structure prolongs the average residence time of the waste gas in the device from. seconds of the traditional device to. seconds, prolongs the contact time of the waste gas with the condensing pipe in the interior of the box shell, improves the condensation effect of the waste gas, and the plurality of baffle plates are fixedly installed in the interior of the exhaust port, which further disrupts the flow trajectory of the waste gas, so that the waste gas cannot be discharged in a straight line at a high speed.

[0010] Preferably, the water outlet of the circulating pump is provided with a connecting water pipe two, one end of the connecting water pipe two penetrates the upper end of the box shell and is fixedly installed with a connecting shell, the water inlet of the circulating pump is provided with a connecting water pipe three, one end of the connecting water pipe three also penetrates the upper end of the box shell and is fixedly installed with a connecting shell, a plurality of condenser pipes are rotatably installed between the two connecting shells, and cleaning assemblies are slidably arranged on the outer sides of the condenser pipes. After the device is used for a period of time, the condensate gradually condenses on the outer wall of the condenser pipe, and the condensate beads contact the condenser pipe on one side and the hot waste gas on the other side, which can cause uneven temperature distribution on the surface of the condenser pipe, repeated thermal stress, fatigue cracks of the condenser pipe, reduction of the structural strength of the equipment, and finally damage to the equipment. At the same time, the condensate beads adsorbed on the outer wall of the condenser pipe affect the condensation efficiency and are taken out of the box shell with the gas flow under the action of the continuous waste gas, which greatly affects the recovery of the condensate beads. At this time, the cleaning assembly is started to adsorb and collect the condensate beads attached to the outer wall of the condenser pipe and to be preliminarily filtered, thereby improving the recovery efficiency of the condensate beads.

[0011] Preferably, the outer sides of the plurality of condenser pipes are provided with threaded grooves matched with the cleaning assemblies. When the waste gas flows into the inside of the box shell from the upper end of the inlet groove, the upper half of the condenser pipe is in contact with the waste gas for a long time, which can easily cause uneven condensation of the condenser pipe. The cleaning assembly drives the condenser pipe to slowly rotate while adsorbing and filtering the condensate on the outer wall of the condenser pipe, so that the contact surface of the condenser pipe and the waste gas is more uniform, and the condensation efficiency of the condenser pipe is improved.

[0012] Preferably, the outer sides of the condenser pipes are symmetrically provided with two groups of extrusion shells rotatably connected with the condenser pipes. The two groups of extrusion shells are provided with drainage holes on one side, the drainage holes are in communication with connecting water pipes four, the lower ends of the two connecting water pipes four are penetratively installed with connecting water pipes five, the connecting water pipes five are in communication with the pre-cooling box, the connecting water pipes five are in communication with the liquid discharge groove, and the extrusion shells are provided with extrusion grooves on the upper ends.

[0013] Preferably, the inside of the two connecting shells is fixedly installed with a connecting rod one, and the outer side of the connecting rod one is fixedly installed with stirring blades. In the process of rotating the condenser pipe, the connecting rod one and the stirring blades outside it are fixedly installed in the inside of the two connecting shells. In the process of rotating the condenser pipe, the condensate in the condenser pipe relatively rotates. In the process of condensing the steam, the heat exchange efficiency of the liquid circulation is improved.

[0014] Preferably, the cleaning assembly comprises a cylinder, the driving end of the cylinder is fixedly installed with a connecting rod two, one end of the connecting rod two penetrates one side of the box shell and is fixedly installed with a fixed rod, the lower end of the fixed rod is fixedly installed with a plurality of adsorption cotton through a connecting rod three, and the extrusion groove is matched with the connecting rod three.

[0015] Preferably, the adsorbing cotton comprises a middle extrusion plate, both sides of the middle extrusion plate are fixedly provided with activated carbon fibers, the inner side of the middle extrusion plate is fixedly provided with a limiting ball matched with a threaded groove, the limiting ball drives the condensing pipe to rotate along the direction of the threaded groove by starting the air cylinder to drive the adsorbing cotton to condensate liquid adsorption treatment on the outer wall of the condensing pipe, in the process of rotating the condensing pipe, the activated carbon fibers absorb and filter the condensate liquid beads on the outer wall of the condensing pipe, and the activated carbon fibers can also adsorb the fine impurities in the condensate liquid, when the middle extrusion plate moves to one side of the extrusion shell, the activated carbon fibers are gradually extruded, the condensate water in the activated carbon fibers flows into the connecting water pipe five through the connecting water pipe four, and the fine impurities are left in the activated carbon fibers, the activated carbon fibers on both sides are extruded in sequence in the process of moving the middle extrusion plate back and forth, and a part of the condensate liquid not absorbed falls into the liquid discharge groove and finally falls into the connecting water pipe five, and the condensate liquid in the connecting water pipe five is uniformly extracted into the precooling box for precooling of waste gas, so that the energy-saving effect of the device is greatly improved.

[0016] Preferably, the adsorbing cotton is slidably connected with the condensing pipe.

[0017] Preferably, the precooling box comprises a precooling shell, two groups of air inlets are formed in one side of the precooling shell, a precooling pipe is arranged in the precooling shell, a connecting pipe six is arranged at the upper end of the precooling pipe in a penetrating mode, a water pump is arranged at one end of the connecting pipe six, the water inlet end of the water pump is in communication with the connecting water pipe five, a connecting pipe seven is arranged at the lower end of the precooling pipe in a penetrating mode, and the connecting pipe seven is connected with the collecting box, and the condensate water stored in the connecting water pipe five is gradually extracted into the precooling pipe under the action of the water pump, so that the high-temperature waste gas blown into the air inlets is preliminarily cooled and pretreated.

[0018] Preferably, the upper end of the precooling shell is provided with a conveying pipe, the conveying pipe is provided with an air inlet shell in a penetrating mode at one end, the air inlet shell is matched with the air inlet groove, the lower end of the air inlet shell is provided with a flow dividing plate, most of the pretreated waste gas is conveyed into the air inlet shell through the conveying pipe, and is uniformly distributed to the surfaces of the plurality of condensing pipes through the flow dividing plate for condensation treatment, and a small part of the waste gas is blown upward under the limitation of the chute, and forms countercurrent convection with the waste gas about to be discharged from the exhaust port, so that the residence time of the waste gas in the box shell is improved.

[0019] Technical effects and advantages of the application:

[0020] In the condensation stage, the threaded grooves outside the condensing tubes cooperate with the limiting balls in the cleaning assembly, when the cylinder drives the adsorbing cotton to slide along the outer wall of the condensing tube, the limiting balls are embedded in the threaded grooves to drive the condensing tube to rotate slowly, so that the surface of the condensing tube is more uniform in contact with the hot waste gas, and local overheating is avoided; meanwhile, the stirring blades inside the condensing tube stir the condensing liquid when the pipe body rotates, accelerate the internal heat transfer, reduce the temperature difference between the inside and outside of the pipe, and reduce the probability of thermal stress generation;

[0021] In the application, the activated carbon fibers on both sides of the adsorbing cotton utilize the high specific surface area characteristics to quickly adsorb the liquid beads on the surface of the condensing tube, and the adsorption efficiency can reach more than 90%, the liquid beads that are not adsorbed are difficult to escape due to the slowing down of airflow speed under the action of reverse convection and baffle, when the adsorbing cotton moves to the extrusion groove of the extrusion shell, the activated carbon fibers are pressed to discharge the internal condensed water, which is recycled to the pre-cooling box through the drainage hole, the connecting water pipe four and five, and is used for waste gas pre-cooling. BRIEF DESCRIPTION OF DRAWINGS

[0022] The disclosure of the present application will be described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present application. In the drawings, the same reference numerals are used to refer to the same parts:

[0023] Figure 1 The whole structure of the condensing box of the present application is shown in the figure Figure 1 ;

[0024] Figure 2 The whole structure of the condensing box of the present application is shown in the figure Figure 2 ;

[0025] Figure 3 The internal structure of the box shell of the present application is shown in the figure

[0026] Figure 4 The external structure of the condensing box of the present application is shown in the figure

[0027] Figure 5 The internal structure of the condensing box of the present application is shown in the figure Figure 1 ;

[0028] Figure 6 The internal structure of the condensing box of the present application is shown in the figure Figure 2 ;

[0029] Figure 7 The external structure of the condensing tube of the present application is shown in the figure

[0030] Figure 8 The enlarged structure of figure A of the present application is shown in the figure

[0031] Figure 9 The internal structure of the pre-cooling box of the present application is shown in the figure.

[0032] Legend: 1, condensing tank; 11, tank shell; 111, exhaust port; 112, chute; 113, air inlet groove; 114, liquid outlet groove; 115, baffle; 12, circulating pump; 121, connecting water pipe one; 122, connecting water pipe two; 123, connecting water pipe three; 124, connecting shell; 1241, connecting rod one; 1242, stirring blade; 1243, connecting water pipe four; 1244, connecting water pipe five; 125, condensing pipe; 1251, threaded groove; 1252, extrusion shell; 1253, extrusion groove; 1254, drain hole; 13, cleaning assembly; 131, air cylinder; 132, connecting rod two; 133, fixed rod; 1331, connecting rod three; 134, adsorbing cotton; 1341, middle extrusion plate; 1342, activated carbon fiber; 1343, limiting ball; 2, pre-cooling tank; 21, pre-cooling shell; 211, air inlet; 212, conveying pipe; 213, air inlet shell; 214, flow divider; 215, air inlet; 22, pre-cooling pipe; 221, air inlet; 222, connecting pipe six; 223, connecting pipe seven. DETAILED DESCRIPTION

[0033] It is easy to understand that those skilled in the art can propose a variety of structural modes and implementation modes that can be replaced with each other without changing the essential spirit of the present application. Therefore, the following detailed description and the accompanying drawings are only exemplary descriptions of the technical solutions of the present application, and should not be considered as the whole or as a limitation or restriction on the technical solutions of the present application.

[0034] Reference Figures 1-2 As shown, the present application provides a technical solution: an energy-saving condensing device for organic solvent recovery, comprising a condensing tank 1, a pre-cooling tank 2 is fixedly installed on one side of the condensing tank 1, the condensing tank 1 comprises a tank shell 11, a circulating pump 12 is arranged at the upper end of the tank shell 11, one end of the circulating pump 12 is connected with a water chiller through a connecting water pipe one 121, an exhaust port 111 is formed on one side of the tank shell 11, when the device is used, the waste gas containing organic solvent is introduced into the inside of the pre-cooling tank 2 for pre-cooling treatment, to prevent the high-temperature waste gas from directly entering the condensing tank 1, which will cause the equipment to bear a large thermal shock and easily produce thermal stress during long-term operation, resulting in deformation and damage of the equipment, the waste gas after pre-cooling treatment flows into the tank shell 11 from the upper end for condensation treatment, and the high-temperature waste gas is collected after condensation.

[0035] Reference Figures 2-4As shown, the present application provides a technical scheme: a kind of energy-saving organic solvent recovery condensing device, the side of box shell 11 is equipped with multiple groups of chute 112, chute 112 is connected with precooling tank 2, the lower end of box shell 11 is equipped with drainage groove 114, the inside of exhaust port 111 is fixedly installed with multiple groups of baffle 115, the upper end of box shell 11 is equipped with air inlet groove 113, most of the waste gas from precooling tank 2 into the process of box shell 11 flows into the inside of box shell 11 from air inlet groove 113, a small part of waste gas is blown upward under the restriction of chute 112, this part of waste gas flowing upward forms counter current with waste gas that is moving downward and will be discharged from exhaust port 111, slightly blocks downgoing waste gas, by actual measurement, the counter current structure makes the average residence time of waste gas in the device from 1.2 seconds of traditional device to 3.5 seconds, makes the contact time of waste gas in the inside of box shell 11 with condenser pipe 125 longer, improves the condensation effect of waste gas, the inside of exhaust port 111 is fixedly installed with multiple groups of baffle 115, these baffles 115 further disrupt the flow trajectory of waste gas, so that it cannot be discharged in straight line quickly.

[0036] Referring to Figures 3-5 As shown, the present application provides a technical scheme: a kind of energy-saving organic solvent recovery condensing device, the water outlet of circulating pump 12 is provided with connecting water pipe two 122, one end of connecting water pipe two 122 penetrates the upper end of box shell 11 and is fixedly installed with connecting shell 124, the water inlet of circulating pump 12 is provided with connecting water pipe three 123, one end of connecting water pipe three 123 also penetrates the upper end of box shell 11 and is fixedly installed with connecting shell 124, multiple groups of condenser pipes 125 are rotatably installed between two connecting shells 124, cleaning assembly 13 is slidably arranged on the outside of condenser pipe 125, when the device is used for a period of time, condensate gradually condenses on the outer wall of condenser pipe 125, condensate beads half contact condenser pipe 125 and half contact hot waste gas, which can cause the surface of condenser pipe 125 to be unevenly distributed in temperature, and repeated thermal stress can easily cause fatigue cracks in the condenser pipe, reduce the structural strength of the equipment, and ultimately cause equipment damage, while the condensate beads adsorbed on the outer wall of condenser pipe 125 affect its condensation efficiency, and under the action of continuously flowing waste gas, a part of the beads is carried out of the box shell 11 with the gas flow, which greatly affects the recovery of condensate beads, at this time, the condensate beads attached to the outer wall of condenser pipe 125 are adsorbed and collected by starting cleaning assembly 13, and are preliminarily filtered, to improve the recovery efficiency of condensate beads.

[0037] Referring to Figures 5-7As shown, the present application provides a technical scheme: a kind of energy-saving organic solvent recovery condensing device, the outer side of multiple condensing tubes 125 is equipped with threaded groove 1251, threaded groove 1251 with cleaning assembly 13 matching, when waste gas flows from the inside of the box shell 11 by upper to lower from air inlet groove 113, since the upper half of condensing tube 125 and the contact time of waste gas is long, it is easy to cause the condensing effect of condensing tube 12 is not uniform, by the condensing liquid adsorption filtering of the outer wall of condensing tube 125 in cleaning assembly 13 is filtered at the same time with the slow rotation of condensing tube 125, so that condensing tube 125 and waste gas contact surface is more uniform, improve the condensing efficiency of condensing tube 125.

[0038] Referring to Figures 5-7 As shown, the present application provides a technical scheme: a kind of energy-saving organic solvent recovery condensing device, the outer side of condensing tube 125 is symmetrically provided with two extrusion shells 1252, extrusion shell 1252 is rotationally connected with condensing tube 125, one side of two extrusion shells 1252 is equipped with drain hole 1254, drain hole 1254 is communicated with connecting water pipe four 1243, the lower end of two connecting water pipe fours 1243 is all penetrated and is equipped with connecting water pipe five 1244, connecting water pipe five 1244 is communicated with precooling tank 2, connecting water pipe five 1244 is communicated with liquid discharge groove 114, extrusion shell 1252 upper end is equipped with extrusion groove 1253.

[0039] Referring to Figures 5-7 As shown, the present application provides a technical scheme: a kind of energy-saving organic solvent recovery condensing device, the inside of two connecting shells 124 is fixedly installed with connecting rod one 1241, the outer side of connecting rod one 1241 is fixedly installed with stirring blade 1242, in the process of rotating condensing tube 125, since connecting rod one 1241 and the stirring blade 1242 outside it are fixed in the inside of two connecting shells 124, in the process of rotating condensing tube 125, condensing liquid in the inside of condensing tube 125 will relatively rotate, in the process of condensing steam, improve the heat exchange efficiency of liquid circulation.

[0040] Referring to Figures 5-8 As shown, the present application provides a technical scheme: a kind of energy-saving organic solvent recovery condensing device, cleaning assembly 13 includes cylinder 131, the drive end of cylinder 131 is fixedly installed with connecting rod two 132, one end of connecting rod two 132 is penetrated through one side of box shell 11 and is fixedly installed with fixed rod 133, the lower end of fixed rod 133 is fixedly installed with multiple adsorption cotton 134 through connecting rod three 1331, extrusion groove 1253 is matched with connecting rod three 1331.

[0041] Referring to Figure 8As shown, the present application provides a technical scheme: a kind of energy-saving organic solvent recovery condensing device, adsorbing cotton 134 includes middle layer extrusion plate 1341, both sides of middle layer extrusion plate 1341 are fixedly installed with activated carbon fiber 1342, the inside of middle layer extrusion plate 1341 is fixedly installed with limit ball 1343, limit ball 1343 is matched with screw groove 1251, by starting cylinder 131, adsorbing cotton 134 is driven to the outer wall of condensing pipe 125 is condensed liquid adsorption treatment, while the limit ball 1343 on the middle layer extrusion plate 1341 of adsorbing cotton 134 is driven condensing pipe 125 to rotate along the direction of screw groove 1251, in the process of condensing pipe 125 rotation, activated carbon fiber 1342 is absorbed and filtered to the condensing liquid pearl of the outer wall of condensing pipe 125, while activated carbon fiber 1342 can also adsorb the fine impurities in the inside of condensing liquid, when middle layer extrusion plate 1341 moves to one side of extrusion shell 1252, activated carbon fiber 1342 is gradually extruded, the condensing water in the inside of activated carbon fiber 1342 can flow into connecting water pipe five 1244 with connecting water pipe four 1243, fine impurities can be left in the inside of activated carbon fiber 1342, in the process of back and forth movement of middle layer extrusion plate 1341, the activated carbon fiber 1342 of both sides is extruded in turn, and a part of condensing liquid not absorbed falls into the inside of liquid discharge groove 114 and finally falls into connecting water pipe five 1244, the condensing liquid in the inside of connecting water pipe five 1244 is extracted to the inside of precooling tank 2 for precooling of waste gas, greatly improve the energy-saving effect of device.

[0042] Referring to Figures 7-8 As shown, the present application provides a technical scheme: a kind of energy-saving organic solvent recovery condensing device, adsorbing cotton 134 is slidably connected with condensing pipe 125.

[0043] Referring to Figure 1 、 Figure 9 As shown, the present application provides a technical scheme: a kind of energy-saving organic solvent recovery condensing device, precooling tank 2 includes precooling shell 21, two groups of air inlet 215 are formed in the side of precooling shell 21, precooling pipe 22 is arranged in the inside of precooling shell 21, connecting pipe six 222 is installed at the upper end of precooling pipe 22, water pump 221 is arranged at one end of connecting pipe six 222, the water inlet end of water pump 221 is communicated with connecting water pipe five 1244, connecting pipe seven 223 is installed at the lower end of precooling pipe 22, connecting pipe seven 223 is connected with collection tank, the condensing water stored in the inside of connecting water pipe five 1244 is gradually extracted to the inside of precooling pipe 22 under the action of water pump 221, high-temperature waste gas blown into by air inlet 215 is preliminarily cooled and pretreated.

[0044] Referring to Figure 9As shown, in the present embodiment: the upper end of the pre-cooling shell 21 is provided with a conveying pipe 212, one end of the conveying pipe 212 is provided with an air inlet shell 213, the air inlet shell 213 is matched with the air inlet groove 113, the lower end of the air inlet shell 213 is provided with a flow divider 214, and at the same time, most of the pre-processed waste gas is conveyed into the air inlet shell 213 through the conveying pipe 212, and is uniformly dispersed to the surface of the plurality of condensing pipes 125 through the flow divider 214 for condensation treatment, and a small part of the waste gas is blown upward under the limitation of the chute 112, and forms a countercurrent flow with the waste gas about to be discharged from the exhaust port 111, so as to improve the residence time of the waste gas inside the box shell 11.

[0045] Working principle: the waste gas containing organic solvents first enters the air inlet 215 of the pre-cooling box 2, the condensate water connected with the water pipe five 1244 is extracted by the water pump 221 to the pre-cooling pipe 22 for pre-cooling, most of the pre-cooled waste gas enters the box shell 11 from the air inlet groove 113 through the conveying pipe 212, the air inlet shell 213 and the flow divider 214, a small part of the waste gas is blown upward through the chute 112 to form a countercurrent flow with the downward waste gas, and the baffle 115 in the exhaust port 111 prolongs the residence time of the waste gas to 3.5 seconds, the circulating pump 12 is connected with the water chiller through the connecting water pipe one 121, drives the condensate to enter the condensing pipe 125 through the connecting water pipe two 122 and the connecting shell 124, when the condensing pipe 125 rotates, the internal stirring blade 1242 stirs the condensate to improve the heat exchange efficiency, at the same time, the air cylinder 131 drives the adsorbing cotton 134 to slide along the threaded groove 1251, adsorbs the condensate beads on the outer wall of the condensing pipe 125 and drives the rotation to make the condensation more uniform, the adsorbed condensate is recovered to the pre-cooling box 2 through the drainage hole 1254 of the extrusion shell 1252, the connecting water pipe four 1243 and the connecting water pipe five 1244, and the condensate not absorbed is collected into the connecting water pipe five 1244 through the liquid outlet groove 114, so as to realize energy saving and recovery.

[0046] The technical scope of the present application is not limited to the above description, and those skilled in the art can make various modifications and modifications to the above embodiments without departing from the technical idea of the present application, and these modifications and modifications should be within the protection scope of the present application.

Claims

1. An energy-saving condensation device for organic solvent recovery, characterized in that, The device includes a condenser box, a precooling box fixedly installed on one side of the condenser box, the condenser box including a box shell, a circulation pump provided at the upper end of the box shell, multiple sets of inclined grooves opened on one side of the box shell, the inclined grooves communicating with the precooling box, and an air inlet groove opened at the upper end of the box shell. The output end of the circulation pump is provided with a second connecting water pipe, one end of which passes through the upper end of the outer shell of the housing and is fixedly installed with a connecting shell. The input end of the circulation pump is provided with a third connecting water pipe, one end of which passes through the upper end of the outer shell of the housing and is fixedly installed with a connecting shell. Multiple sets of condenser tubes are rotatably installed between the two sets of connecting shells. A cleaning component is slidably arranged on the outside of the condenser tubes. Two sets of extrusion shells are symmetrically arranged on the outside of the condenser tubes. The extrusion shells are rotatably connected to the condenser tubes. Threaded grooves are opened on the outside of the multiple sets of condenser tubes, and the threaded grooves match the cleaning component. The cleaning assembly includes a cylinder, and a connecting rod two is fixedly installed on the driving end of the cylinder. One end of the connecting rod two passes through one side of the outer shell of the housing and is fixedly installed with a fixing rod. A connecting rod three is fixedly installed at the lower end of the fixing rod. Multiple sets of absorbent cotton are fixedly installed on the outer side of the connecting rod three. The absorbent cotton matches the squeezing shell.

2. The energy-saving condensation device for organic solvent recovery according to claim 1, characterized in that: The lower end of the outer shell of the box is provided with a drain groove, and one side of the outer shell of the box is provided with an exhaust port. Multiple sets of baffles are fixedly installed inside the exhaust port.

3. The energy-saving condensation device for organic solvent recovery according to claim 2, characterized in that: Both sets of extrusion shells have drainage holes on one side, which are connected to the four connecting water pipes. Both sets of four connecting water pipes have a connecting water pipe five installed through their lower ends. The connecting water pipe five is connected to the precooling box and the drain trough. The upper end of the extrusion shell has an extrusion groove.

4. The energy-saving condensation device for organic solvent recovery according to claim 1, characterized in that: Both sets of connecting shells have a connecting rod fixedly installed inside, and a stirring blade is fixedly installed on the outside of the connecting rod.

5. The energy-saving condensation device for organic solvent recovery according to claim 1, characterized in that: The absorbent cotton includes a middle extrusion plate, on both sides of which activated carbon fibers are fixedly installed, and a limiting ball is fixedly installed on the inner side of the middle extrusion plate, the limiting ball matching the threaded groove.

6. The energy-saving condensation device for organic solvent recovery according to claim 1, characterized in that: The absorbent cotton is slidably connected to the condenser tube.

7. The energy-saving condensation device for organic solvent recovery according to claim 3, characterized in that: The precooling box includes a precooling shell with two sets of air inlets on one side. A precooling pipe is installed inside the precooling shell. A connecting pipe six is ​​installed through the upper end of the precooling pipe. A water pump is installed at one end of the connecting pipe six. The water inlet of the water pump is connected to the connecting water pipe five. A connecting pipe seven is installed through the lower end of the precooling pipe and is connected to the collection box.

8. The energy-saving condensation device for organic solvent recovery according to claim 7, characterized in that: A conveying pipe is installed through the upper end of the precooling shell, and an air inlet shell is installed through one end of the conveying pipe.

9. The energy-saving condensation device for organic solvent recovery according to claim 8, characterized in that: The air intake shell is matched with the air intake slot, and a flow divider is provided at the lower end of the air intake shell.

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