Tail gas condensate recovery device for acetic ester production and recovery method thereof

Abstract

The tail gas condensate recovery device comprises a recovery tank, a flow equalizing pipe is arranged in the recovery tank, a plurality of flow equalizing holes are formed in the flow equalizing pipe, a gas inlet pipe is arranged on one side of the recovery tank and communicated with the flow equalizing pipe, a recovery box is arranged in the recovery tank, a recovery hole is formed in the middle of the recovery box, and a gas outlet is formed in the middle of the recovery box. Adjusting grooves are formed in the two side walls of the recycling hole, a recycling conveying belt is arranged in the recycling hole, a plurality of filtering holes are formed in the recycling conveying belt, a plurality of adjusting plates are arranged on the inner side and the outer side of the recycling conveying belt correspondingly, each adjusting plate is provided with a plurality of flow baffles, adsorption cotton is arranged on the surfaces of the recycling conveying belt and the adjusting plates correspondingly, and recycling annular grooves are formed in the bottoms of the adjusting grooves correspondingly; and an extrusion roller is arranged above the recycling ring groove. And due to the fact that the flow baffle is additionally arranged, through the inclined design of the flow baffle, the collision probability when airflow passes through the filtering holes is further increased, and therefore the gas-liquid separation efficiency when the airflow passes through is further improved, and the content of liquid in gas exhausted by the exhaust pipe is greatly reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of acetate production and processing, and in particular relates to a tail gas condensate recovery device for acetate production and a recovery method thereof. Background Art

[0002] Acetate is an acetic acid ester product, which is widely used in the fields of solvents, plasticizers, surfactants and polymer monomers. The corresponding isopropyl acetate, sec-butyl acetate, isobutyl acetate and other acetates and other carboxylic acid esters are produced by direct addition esterification of propylene, 1-butene, 2-butene, isobutylene and other lower olefins with acetic acid or other carboxylic acids using renewable catalysts. The products with the broadest market prospects are isopropyl acetate and sec-butyl acetate. Ethyl acetate has excellent solubility and can be used as a fast-drying solvent. In the distillation processing of acetate ester process products, the raw materials are subjected to catalytic cracking, coking and other reactions, and the tail gas after the reaction often contains a lot of raw material liquid. The raw material liquid in the tail gas is mixed in the grievances and is not easy to recover. The existing recycling and processing equipment is often complex in structure, and the processing process is cumbersome, and the procurement cost of the equipment is high.

[0003] Chinese patent CN217287547U discloses a device for recovering and treating condensate from tail gas of acetate ester process, including: a storage tank body, a plurality of reaction tanks, each reaction tank is provided with an outlet pipe, each outlet pipe is connected to a gas collecting pipe, the gas collecting pipe is connected to a condenser, and the outlet of the condenser is connected to a liquid inlet pipe; the upper end of the storage tank body is provided with a mounting pipe, a liquid adding pipe, a liquid level gauge and a demister pipe, the lower end of the storage tank body is provided with a liquid outlet pipe, the mounting pipe extends into the bottom of the storage tank body, and the liquid inlet pipe is connected to the mounting pipe, and a demister wire mesh is installed in the demister pipe; it also includes: a limit plate provided in the storage tank body, and a liquid passing mechanism is provided at the bottom of the limit plate. The recovery device solves the problem that the raw material liquid contained in the tail gas of the existing acetate ester process is not easy to recover, and the existing recovery equipment has a complex structure, a cumbersome processing process, and a high equipment procurement cost.

[0004] The inventor found that in this device, the airflow enters the tank body and is unevenly distributed, which easily leads to a reduced probability of contact between the airflow and the liquid, thereby causing a decrease in the overall recovery efficiency. In addition, when recovering the liquid in the airflow, only a demisting mesh is used. Although this simple collision method can recover the liquid in the airflow to a certain extent, the overall recovery efficiency is very low, resulting in poor recovery effect.

[0005] Therefore, the existing structure and defects are studied and improved, and a tail gas condensate recovery device and a recovery method for acetate production are provided, in order to achieve a more practical purpose. Summary of the invention

[0006] In view of at least one problem in the prior art, an object of the present invention is to provide a tail gas condensate recovery device for acetate production and a recovery method thereof.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A tail gas condensate recovery device for acetate production comprises a recovery tank, wherein the recovery tank stores recovery liquid, a flow equalizing pipe is provided below the liquid level of the recovery liquid, a plurality of flow equalizing holes are provided on the flow equalizing pipe, an air inlet pipe is provided on one side of the recovery tank, and an exhaust pipe is provided on the upper end of the recovery tank, the air inlet pipe is communicated with the flow equalizing pipe, a fixedly connected recovery box is provided in the recovery tank, a square recovery hole for airflow to pass through is provided in the middle of the recovery box, symmetrically distributed adjustment grooves are provided on both side walls of the recovery hole, and a matching and rotatable recovery conveyor belt is provided in the recovery hole, both ends of the recovery conveyor belt are arranged in the adjustment groove, a plurality of uniformly distributed filter holes are provided on the recovery conveyor belt, a plurality of uniformly distributed adjustment plates are provided on the inner and outer sides of the recovery conveyor belt, the adjustment plates are provided with a plurality of rotatable baffles, adsorption cotton for liquid adsorption is provided on the surfaces of the recovery conveyor belt and the adjustment plate, a square recovery ring groove is provided at the bottom of the adjustment groove, and an extrusion roller for extruding the adsorption cotton on the recovery conveyor belt is provided above the recovery ring groove.

[0009] Preferably, the adjustment plate is provided with a limiting slide groove, the limiting slide groove is provided with a limiting slide plate which can move back and forth, and a notch groove is provided on one side wall of the limiting slide groove, the baffle plate is arranged in the notch groove, and one side of the limiting slide plate is provided with a rotating groove rotatably connected to the baffle plate, the baffle plates located on the inner and outer sides of the recovery conveyor belt are staggered, and the notch groove is provided with a plurality of fixedly connected guide inclined plates, and the guide inclined plates are arranged on one side of the baffle plate, so that after the baffle plate moves onto the guide inclined plate, the guide inclined plate will tilt the top of the baffle plate.

[0010] Preferably, the adjustment plates located on the inner and outer sides of the recovery conveyor belt are aligned with each other, and a fixedly connected synchronous telescopic rod is also provided at one end of the limiting slide groove. The synchronous telescopic rod is fixedly connected to the limiting slide plate, and the adjacent synchronous telescopic rods located on the inner and outer sides of the recovery conveyor belt are connected to each other. A plurality of hydraulic rods corresponding to the limiting slide grooves and used to push the limiting slide plate are provided on the inner wall of the recovery hole.

[0011] Preferably, the recovery conveyor belt is provided with four conveying rollers for driving the recovery conveyor belt to rotate, and the conveying rollers are respectively arranged at the upper and lower ends of the adjusting groove, and the conveying rollers include a conveying shaft and a conveying gear, the conveying shaft is rotatably connected to the adjusting groove, and the conveying shaft is provided with a plurality of conveying gears that are spaced apart and meshed with the filter holes, wherein the distance between the conveying gears allows the baffle to pass normally, and a driving motor is provided on one side of the recovery box, and the output end of the driving motor is connected to one of the conveying shafts.

[0012] Preferably, the baffle plate includes a baffle plate, and there are multiple baffle plates. One end of the baffle plate is provided with a fixedly connected connecting protrusion, and the other end of the baffle plate is provided with a connecting groove corresponding to the connecting protrusion. Both ends of the connecting protrusion are provided with a connecting shaft that is rotatably connected, and a connecting groove that is rotatably connected to the connecting shaft is provided in the connecting groove. A retractable positioning rod is provided at the end of the connecting protrusion, and a positioning groove that is engaged with the positioning rod is provided in the connecting groove.

[0013] Preferably, a first groove is provided at one end of the connecting convex plate, an automatic telescopic locking mechanism is fixedly provided in the first groove, the telescopic end of the automatic telescopic locking mechanism is connected to the positioning rod, a second groove is provided on the baffle plate which is communicated with the other end of the first groove, a first telescopic rod is provided in the second groove, the first telescopic rod is fixedly connected to the first groove, a second telescopic rod is provided in the first groove, one end of the second telescopic rod is connected to the pressing end of the automatic telescopic locking mechanism, and the other end of the second telescopic rod is connected and fixed to the first telescopic rod, the second telescopic rod is communicated with the first telescopic rod, adjusting rollers are provided on the inner and outer sides of the recovery conveyor belt located at the upper end of the adjusting groove, and a plurality of retractable pressing convex rods for pressing the corresponding first telescopic rods are provided on the adjusting roller and the squeezing roller.

[0014] Preferably, the automatic telescopic locking mechanism adopts the automatic telescopic locking mechanism in a push-telescopic cylindrical pen.

[0015] Preferably, the diameter of the first telescopic rod is larger than the diameter of the second telescopic tube.

[0016] Preferably, the adjusting roller and the squeezing roller are both provided with a plurality of through grooves corresponding to the baffle plates, the through grooves are provided with a third groove, a return spring fixedly connected therein is provided in the third groove, the pressing protrusion is arranged in the third groove, and the pressing protrusion is fixedly connected to the return spring.

[0017] A recovery method of a tail gas condensate recovery device for acetate production, using the tail gas condensate recovery device for acetate production, characterized in that it comprises the following steps:

[0018] S1 sends the tail gas into the recovery tank through the air inlet pipe, and the tail gas enters the recovery liquid in an aerated manner through the equalizing pipe, so that the tail gas and the recovery liquid are fully contacted and adsorbed;

[0019] The tail gas separated from the recovery liquid in S2 continues to rise with the airflow. When passing through the filter holes, the liquid in the airflow contacts the adsorption cotton on the recovery conveyor belt and the baffle plate, so that the liquid is adsorbed and separated, and the separated airflow is discharged through the exhaust pipe;

[0020] After the adsorption cotton on the S3 baffle absorbs a certain amount of liquid, the recovery conveyor belt is controlled to rotate, and when the baffle enters the adjustment groove, the baffle is rotated to keep it flush with the recovery conveyor belt. In this way, when the baffle passes through the squeezing roller, the squeezing roller can fully squeeze and separate the liquid in the adsorption cotton on the baffle and the recovery conveyor belt, and then when the baffle enters the recovery hole again, it is rotated in an inclined state.

[0021] Compared with the prior art, the present invention has the following technical effects:

[0022] The design of the flow-equalizing tube can make the exhaust gas more evenly distributed in the recovery liquid through the flow-equalizing holes on the flow-equalizing tube, so that the exhaust gas condensate can be fully adsorbed and recovered. The design of the recovery conveyor belt and the filter hole can realize gas-liquid separation by utilizing the collision of the airflow passing through the filter hole, further improving the separation efficiency of the liquid in the airflow. At the same time, the addition of the baffle can further increase the collision probability of the airflow passing through the filter hole through the inclined design of the baffle, thereby further improving the gas-liquid separation efficiency when the airflow passes through, and the separation is more thorough. At the same time, the addition of the adsorption cotton can make the adsorption cotton fully adsorb the liquid in the airflow, greatly reducing the liquid content in the exhaust gas discharged from the exhaust pipe, and improving the gas-liquid separation efficiency.

[0023] The design of the squeezing roller enables the adsorbent cotton to pass through the squeezing roller better after absorbing a certain amount of liquid through the rotation of the recovery conveyor belt and the synchronous rotation of the baffle plate. The liquid absorbed in the adsorbent cotton can be squeezed and separated by the squeezing of the squeezing roller, so that the adsorbent cotton can be circulated for adsorption.

[0024] With reference to the following description and the accompanying drawings, the specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope thereby.

[0025] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0026] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 This is a schematic diagram of the three-dimensional structure provided by the present invention.

[0029] Figure 2 This is a schematic diagram of the three-dimensional connection structure of the recovery conveyor belt and the baffle provided by the present invention.

[0030] Figure 3 This is a schematic diagram of the cross-sectional connection structure of the recycling box provided by the present invention.

[0031] Figure 4 This is a schematic diagram of the three-dimensional connection structure of the adjustment plate and the baffle provided by the present invention.

[0032] Figure 5 This is a schematic diagram of the three-dimensional connection structure of the conveying shaft and the conveying gear provided by the present invention.

[0033] Figure 6 This is a schematic diagram of the three-dimensional connection structure of the baffle plates provided by the present invention.

[0034] Figure 7 This is a schematic diagram of the internal three-dimensional structure of the baffle plate provided by the present invention.

[0035] Figure 8 This is a schematic diagram of the three-dimensional structure of the extrusion roller provided by the present invention.

[0036] Explanation of the reference numerals in the figure: 1. Recovery tank; 11. Air inlet pipe; 111. Central pipe; 112. Diverter plate; 113. Flow equalizing pipe; 12. Recovery box; 121. Recovery hole; 122. Adjustment groove; 123. Recovery ring groove; 13. Recovery conveyor belt; 131. Conveying roller; 1311. Conveying shaft; 1312. Conveying gear; 132. Filter hole; 14. Baffle plate; 141. Rotating shaft; 142. Baffle plate; 143. First telescopic rod; 144. Connecting groove; 145. Positioning groove; 1 46. ​​Connecting groove; 147. First groove; 1471. Positioning rod; 1472. Automatic telescopic locking mechanism; 1473. Second telescopic rod; 148. Connecting convex plate; 149. Connecting shaft; 15. Adjusting plate; 151. Limiting slide plate; 152. Notch groove; 153. Guide inclined plate; 154. Synchronous telescopic rod; 155. Limiting slide groove; 16. Exhaust pipe; 17. Extrusion roller; 171. Passing groove; 172. Pressing convex rod; 173. Third groove; 174. Return spring; 18. Adjusting roller. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0038] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be another element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be another element centered thereon at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0040] Example 1, please refer to Figure 1 , Figure 2 and Figure 3A tail gas condensate recovery device for acetate production includes a recovery tank 1, wherein the recovery tank 1 stores recovery liquid, a flow equalizing pipe 113 is provided below the liquid level of the recovery liquid, and a plurality of flow equalizing holes are provided on the flow equalizing pipe 113, an air inlet pipe 11 is provided on one side of the recovery tank 1, and an exhaust pipe 16 is provided on the upper end of the recovery tank 1, the air inlet pipe 11 is connected to the flow equalizing pipe 113, a recovery box 12 is provided in a fixed connection in the recovery tank 1, a recovery hole 121 in a square shape and used for airflow to pass through is provided in the middle of the recovery box 12, symmetrically distributed adjustment grooves 122 are provided on the two side walls of the recovery hole 121, and a A matching and rotatable recovery conveyor belt 13, both ends of which are arranged in an adjusting groove 122, a plurality of evenly distributed filter holes 132 are arranged on the recovery conveyor belt 13, a plurality of evenly distributed adjustment plates 15 are arranged on the inner and outer sides of the recovery conveyor belt 13, the adjustment plates 15 are provided with a plurality of rotatable baffle plates 14, the surfaces of the recovery conveyor belt 13 and the adjustment plates 15 are provided with adsorption cotton for liquid adsorption, a square recovery ring groove 123 is arranged at the bottom of the adjustment groove 122, and an extrusion roller 17 for squeezing the adsorption cotton on the recovery conveyor belt 13 is arranged above the recovery ring groove 123.

[0041] The design of the flow equalizing tube 113 can make the exhaust gas more evenly distributed in the recovery liquid through the flow equalizing holes on the flow equalizing tube 113, so that the exhaust gas condensate can be fully adsorbed and recovered. The design of the recovery conveyor belt 13 and the filter hole 132 can utilize the collision of the airflow passing through the filter hole 132 to achieve gas-liquid separation, further improving the separation efficiency of the liquid in the airflow. At the same time, the addition of the baffle plate 14 can further increase the collision probability of the airflow passing through the filter hole 132 through the inclined design of the baffle plate 14, thereby further improving the gas-liquid separation efficiency when the airflow passes through, and the separation is more thorough. At the same time, the addition of the adsorption cotton can make the adsorption cotton fully adsorb the liquid in the airflow, greatly reducing the liquid content in the exhaust gas discharged from the exhaust pipe 16, and improving the gas-liquid separation efficiency.

[0042] The design of the squeezing roller 17 enables the adsorbent cotton to pass through the squeezing roller 17 better after absorbing a certain amount of liquid through the rotation of the recovery conveyor belt 13 and the synchronous rotation of the baffle plate 14. The liquid absorbed in the adsorbent cotton can be squeezed and separated by the squeezing of the squeezing roller 17, so that the adsorbent cotton can perform cyclic adsorption.

[0043] See also Figure 2 and Figure 4In this embodiment, the regulating plate 15 is provided with a limiting slide groove 155, and a limiting slide plate 151 that can move back and forth is provided in the limiting slide groove 155, and a notch groove 152 is provided on one side wall of the limiting slide groove 155, and the baffle plate 14 is arranged in the notch groove 152, and a rotating groove that is rotatably connected to the baffle plate 14 is provided on one side of the limiting slide plate 151, and the baffle plates 14 located on the inner and outer sides of the recovery conveyor belt 13 are staggered, and a plurality of fixedly connected guide ramps 153 are provided in the notch groove 152, and the guide ramps 153 are arranged on one side of the baffle plate 14, so that after the baffle plate 14 moves onto the guide ramp 153, the guide ramp 153 tilts the top of the baffle plate 14. The rotating groove allows the limiting slide plate 151 to rotate only to a set angle. The baffle plate 14 is provided with a rotating shaft 141 that is rotatably connected to the rotating groove.

[0044] The back-and-forth movement of the limiting slide 151 and the staggered distribution of the baffles 14 , in conjunction with the guide ramps 153 , enable the baffles 14 to fully block each filter hole 132 , while at the same time, the rotation control of the baffles 14 can be achieved through the back-and-forth movement of the limiting slide 151 .

[0045] See also Figure 2 and Figure 4 In this embodiment, the adjustment plates 15 located on the inner and outer sides of the recovery conveyor belt 13 are aligned with each other, and a fixedly connected synchronous telescopic rod 154 is provided at one end of the limiting slide groove 155. The synchronous telescopic rod 154 is fixedly connected to the limiting slide plate 151, and the adjacent synchronous telescopic rods 154 located on the inner and outer sides of the recovery conveyor belt 13 are connected to each other. A plurality of hydraulic rods corresponding to the limiting slide groove 155 and used to push the limiting slide plate 151 are provided on the inner wall of the recovery hole 121.

[0046] The design of the synchronous telescopic rod 154 realizes that only one of the limiting slide plates 151 needs to be squeezed and pushed to realize the synchronous movement of the two limiting slide plates 151, thereby realizing the synchronous movement of the inner and outer baffle plates 14.

[0047] See also Figure 3 and Figure 5In this embodiment, the recycling conveyor belt 13 is provided with four conveying rollers 131 for driving the recycling conveyor belt 13 to rotate. The conveying rollers 131 are respectively arranged at the upper and lower ends of the adjusting groove 122. The conveying rollers 131 include a conveying shaft 1311 and a conveying gear 1312. The conveying shaft 1311 is rotatably connected to the adjusting groove 122, and the conveying shaft 1311 is provided with a plurality of conveying gears 1312 that are spaced and meshed with the filter holes 132. The distance between the conveying gears 1312 allows the baffle 14 to pass normally. A driving motor is provided on one side of the recycling box 12, and the output end of the driving motor is connected to one of the conveying shafts 1311. The cooperation between the conveying shaft 1311 and the conveying gear 1312 not only ensures that the baffle 14 will not get stuck when passing through the conveying shaft 1311, but also enables the baffle 14 to pass better, and also realizes the normal rotation control of the recycling conveyor belt 13.

[0048] See also Figure 6 , Figure 7 In the present embodiment, the baffle plate 14 includes a baffle plate 142, and there are multiple baffle plates 142. One end of the baffle plate 142 is provided with a fixedly connected connecting protrusion 148, and the other end of the baffle plate 142 is provided with a connecting groove 144 corresponding to the connecting protrusion 148. Both ends of the connecting protrusion 148 are provided with a rotatably connected connecting shaft 149, and the connecting groove 144 is provided with a connecting groove 146 rotatably connected to the connecting shaft 149. A retractable positioning rod 1471 is provided at the end of the connecting protrusion 148, and a positioning groove 145 is provided in the connecting groove 144 to be engaged with the positioning rod 1471.

[0049] The baffle plate 14 is designed with a baffle plate 142. Such a design can increase the length of the original baffle plate 14 and is no longer limited by the size of the conveying gear 1312. The increase in the length of the baffle plate 14 can effectively reduce the number of the adjustment plates 15, thereby increasing the number of the filter holes 132 in the recovery hole 121, improving the airflow passing rate, and reducing the cost. In addition, as the length of the baffle plate 14 increases, the contact probability between the airflow and the baffle plate 14 is also increased, thereby improving the gas-liquid separation efficiency.

[0050] The design of the connecting protrusion 148, the connecting groove 144, the positioning rod 1471 and the positioning groove 145 allows the baffle plates 142 to be both rotatably connected and fixedly connected. The rotatable connection between the baffle plates 14 can better pass through the conveying shaft 1311, and the fixed connection between the baffle plates 142 allows the baffle plates 14 to be better rotated into an inclined shape.

[0051] See also Figure 3 , Figure 6 , Figure 7 and Figure 8 In this embodiment, a first groove 147 is provided at one end of the connecting convex plate 148, and a fixedly connected automatic telescopic locking mechanism 1472 is provided in the first groove 147, and the telescopic end of the automatic telescopic locking mechanism 1472 is connected to the positioning rod 1471, and a second groove connected to the other end of the first groove 147 is provided on the baffle plate 142, and a first telescopic rod 143 is provided in the second groove, and the first telescopic rod 143 is fixedly connected to the first groove 147, and a second telescopic rod 143 is provided in the first groove 147. 1473, one end of the second telescopic rod 1473 is connected to the pressing end of the automatic telescopic locking mechanism 1472, and the other end of the second telescopic rod 1473 is connected and fixed to the first telescopic rod 143, the second telescopic rod 1473 is communicated with the first telescopic rod 143, and the recovery conveyor belt 13 located at the upper end of the adjusting groove 122 is provided with adjusting rollers 18 on both the inner and outer sides, and the adjusting rollers 18 and the squeezing rollers 17 are provided with a plurality of retractable pressing protrusions 172 for pressing the corresponding first telescopic rods 143.

[0052] The design of the automatic telescopic locking mechanism 1472, the first telescopic rod 143, the second telescopic rod 1473 and the pressing protrusion 172 can utilize the pressing of the pressing protrusion 172 on the first telescopic rod 143, in conjunction with the characteristics of the automatic telescopic locking mechanism 1472, to achieve telescopic control of the positioning rod 1471.

[0053] In this embodiment, the automatic telescopic locking mechanism 1472 adopts the automatic telescopic locking mechanism 1472 in a press-telescopic cylindrical pen. Since the automatic telescopic locking mechanism 1472 is a prior art, this application does not provide too much description of it.

[0054] In this embodiment, the diameter of the first telescopic rod 143 is larger than that of the second telescopic rod. Due to the difference in diameter, the compression amount of the first telescopic rod 143 after being pressed is amplified by the second telescopic rod 1473, so that the first telescopic rod 143 only needs to be pressed a short distance to achieve the telescopic control of the second telescopic rod 1473 over a longer distance.

[0055] See also Figure 8In this embodiment, the adjusting roller 18 and the squeezing roller 17 are both provided with a plurality of passing grooves 171 corresponding to the baffle plate 14, and the passing grooves 171 are provided with third grooves 173, and the third grooves 173 are provided with a fixedly connected return spring 174, and the pressing protrusion 172 is arranged in the third groove 173, and the pressing protrusion 172 is fixedly connected to the return spring 174. The addition of the third groove 173 can make the baffle plate 14 pass through the squeezing roller 17 and the adjusting roller 18 better, and the third groove 173 can also squeeze the adsorption cotton on the surface of the baffle plate 14 more fully. The design of the return spring 174 and the pressing protrusion 172 can utilize the elasticity of the return spring 174 to make the pressing protrusion 172 automatically pop out when passing through the first telescopic rod 143, thereby realizing the automatic squeezing of the first telescopic rod 143.

[0056] See also Figure 1 In this embodiment, a fixedly connected central tube 111 is provided at the bottom of the recovery tank 1, a connected flow distribution plate 112 is provided on the central tube 111, the flow equalizing tube 113 is connected to the flow distribution plate 112, and the air inlet pipe 11 is connected to the central tube 111.

[0057] In this embodiment, there are four hydraulic rods, and the hydraulic rods are located on the inner wall of the recovery hole 121. With the rotation direction of the recovery conveyor belt 13, the hydraulic rods are staggered on the inner and outer sides of the recovery conveyor belt 13, that is, the first hydraulic rod squeezes the limiting slide 151 on the inner side of the recovery conveyor belt 13, the second hydraulic rod squeezes the limiting slide 151 on the outer side of the recovery conveyor belt 13, the third hydraulic rod squeezes the inner limiting slide 151 of the recovery conveyor belt 13, and the fourth hydraulic rod squeezes the limiting slide 151 on the outer side of the recovery conveyor belt 13.

[0058] When using this application:

[0059] After the adsorption cotton absorbs a certain amount of liquid, the hydraulic rod (i.e., the first hydraulic rod) at the bottom outer side of one of the adjustment grooves 122 is first controlled to squeeze the limiting slide plate 151 on the inner side of the recovery conveyor belt 13, so that the limiting slide plate 151 moves, thereby separating the baffle plate 14 from the guide inclined plate 153, and then the recovery conveyor belt 13 is controlled to rotate, so that the next baffle plate 14 moves to the hydraulic rod, and the previous baffle plate 14 moves into the adjustment groove 122. Since the baffle plate 14 is separated from the guide inclined plate 153, the baffle plate 14 can be rotated to a horizontal position, and the recovery conveyor belt 13 is rotated in sequence in this way, so that the baffle plates 14 enter the corresponding adjustment grooves 122 in sequence;

[0060] The baffle plate 14 entering the adjustment groove 122 will pass through the squeezing roller 17, which can squeeze and separate the liquid adsorbed on the cotton on the recovery conveyor belt 13 and the baffle plate 14. At the same time, the pressing protruding rod 172 on the squeezing roller 17 can automatically press the first telescopic rod 143 under the action of the reset spring 174. After the first telescopic rod 143 is pressed, the positioning rod 1471 can automatically shrink and separate from the positioning groove 145. At this time, the multiple baffle plates 142 are rotatably connected, and then the baffle plates 142 can better pass through the conveying shaft 1311.

[0061] After the extruded baffle plate 142 moves to the upper end of the adjustment groove 122 along with the recovery conveyor belt 13 and passes through the conveying shaft 1311 at the upper end, the adjustment roller 18 at the upper end of the adjustment groove 122 can squeeze the baffle plate 142 to be flush with the recovery conveyor belt 13. At this time, the pressing convex rod 172 on the adjustment roller 18 can press the first telescopic rod 143 again, so that the positioning rod 1471 is engaged with the positioning groove 145, so that the baffle plates 142 are fixedly connected;

[0062] When the baffle plate 142 separates from the regulating groove 122 and moves to the hydraulic rod (i.e., the second hydraulic rod) on the outer side of the upper end of the regulating groove 122, the hydraulic rod squeezes the limiting slide plate 151 on the outer side of the recovery conveyor belt 13, so that the limiting slide plate 151 moves, and the baffle plate 14 moves to the guide inclined plate 153. The baffle plate 14 is lifted to an inclined state by the guide inclined plate 153. At this time, the baffle plate 14 and the recovery conveyor belt 13 perform normal filtration adsorption separation;

[0063] When the baffle plate 14 moves to the upper end of another adjusting groove 122 along with the recovery conveyor belt 13, the hydraulic rod (i.e., the third hydraulic rod) on the outer side of the upper end of the adjusting groove 122 first squeezes the limiting slide plate 151 on the inner side of the recovery conveyor belt 13, so that the baffle plate 14 is separated from the guide inclined plate 153. At this time, the baffle plate 14 can rotate. When the baffle plate 14 completely enters the adjusting groove 122 and passes through the adjusting roller 18, the pressing convex rod 172 on the adjusting roller 18 can press the first telescopic rod 143, so that the positioning rod 1471 is separated from the positioning groove 145. At this time, the baffle plates 142 are rotationally connected, and the baffle plates 142 can pass through the conveying shaft 1311.

[0064] When the baffle plate 142 moves to the bottom of the adjustment groove 122 along with the recovery conveyor belt 13, when passing through the squeezing roller 17, the squeezing roller 17 squeezes the adsorption cotton, and at the same time, the pressing convex rod 172 presses the first telescopic rod 143 again, so that the baffle plates 142 are fixedly connected, and when the baffle plate 14 through the squeezing roller 17 continues to move outward to the outer hydraulic rod (the fourth hydraulic rod) at the bottom of the corresponding adjustment groove 122, the fourth hydraulic rod squeezes the limiting slide plate 151 on the outer side of the recovery conveyor belt 13, so that the baffle plate 14 automatically rotates and becomes inclined under the action of the guide inclined plate 153; in this way, the liquid in the airflow passing through the recovery hole 121 can be adsorbed and separated cyclically.

[0065] A recovery method of a tail gas condensate recovery device for acetate production, using the tail gas condensate recovery device for acetate production, characterized in that it comprises the following steps:

[0066] S1 sends the tail gas into the recovery tank 1 through the air inlet pipe 11, and the tail gas enters the recovery liquid in an aerated manner through the flow equalizing pipe 113, so that the tail gas and the recovery liquid are fully contacted and adsorbed;

[0067] The tail gas separated from the recovery liquid by S2 continues to rise with the airflow. When passing through the filter hole 132, the liquid in the airflow contacts the adsorption cotton on the recovery conveyor belt 13 and the baffle plate 14, so that the liquid is adsorbed and separated, and the separated airflow is discharged through the exhaust pipe 16;

[0068] After the adsorption cotton on the S3 baffle plate 14 absorbs a certain amount of liquid, the recovery conveyor belt 13 is controlled to rotate, and when the baffle plate 14 enters the adjustment groove 122, the baffle plate 14 is rotated to keep it flush with the recovery conveyor belt 13, so that when the baffle plate 14 passes through the squeezing roller 17, the squeezing roller 17 can fully squeeze and separate the liquid in the adsorption cotton on the baffle plate 14 and the recovery conveyor belt 13, and then when the baffle plate 14 enters the recovery hole 121 again, it is rotated in an inclined state.

[0069] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for all purposes. The term "consisting essentially of..." to describe a combination should include the identified elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe a combination of elements, ingredients, parts or steps herein also contemplates embodiments that consist essentially of these elements, ingredients, parts or steps. By using the term "may", it is intended to indicate that any attribute described that "may" include is optional.

[0070] Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "an" used to describe an element, ingredient, part or step is not intended to exclude other elements, ingredients, parts or steps.

[0071] It should be understood that the above description is for illustration and not for limitation. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present application should not be determined with reference to the above description, but should be determined with reference to the appended claims and the full scope of equivalents to which such claims are entitled. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to be a waiver of the subject matter, nor should it be considered that the inventors did not consider the subject matter to be part of the disclosed inventive subject matter.

Claims

1. A tail gas condensate recovery device for acetate production, characterized in that: The invention comprises a recovery tank, wherein the recovery tank stores recovery liquid, a flow balancing pipe is provided below the liquid level of the recovery liquid, a plurality of flow balancing holes are provided on the flow balancing pipe, an air inlet pipe is provided on one side of the recovery tank, and an exhaust pipe is provided on the upper end of the recovery tank, the air inlet pipe is connected with the flow balancing pipe, a fixedly connected recovery box is provided in the recovery tank, a square recovery hole for airflow to pass through is provided in the middle of the recovery box, symmetrically distributed adjustment grooves are provided on both side walls of the recovery hole, and a matching and rotatable recovery conveyor belt is provided in the recovery hole, both ends of the recovery conveyor belt are arranged in the adjustment groove, a plurality of evenly distributed filter holes are provided on the recovery conveyor belt, a plurality of evenly distributed adjustment plates are provided on the inner and outer sides of the recovery conveyor belt, the adjustment plates are provided with a plurality of rotatable baffles, adsorption cotton for liquid adsorption is provided on the surfaces of the recovery conveyor belt and the adjustment plate, a square recovery ring groove is provided at the bottom of the adjustment groove, and an extrusion roller for extruding the adsorption cotton on the recovery conveyor belt is provided above the recovery ring groove.

2. The tail gas condensate recovery device for acetate production according to claim 1, characterized in that: The adjusting plate is provided with a limiting slide groove, a limiting slide plate which can move back and forth is provided in the limiting slide groove, and a notch groove is provided on one side wall of the limiting slide groove, the baffle plate is arranged in the notch groove, and a rotating groove rotatably connected to the baffle plate is provided on one side of the limiting slide plate, the baffle plates located on the inner and outer sides of the recovery conveyor belt are staggered, a plurality of fixedly connected guide inclined plates are provided in the notch groove, and the guide inclined plate is arranged on one side of the baffle plate, so that after the baffle plate moves to the guide inclined plate, the guide inclined plate will tilt the top of the baffle plate.

3. The tail gas condensate recovery device for acetate production according to claim 2, characterized in that: The adjustment plates located on the inner and outer sides of the recovery conveyor belt are aligned with each other, and a fixedly connected synchronous telescopic rod is also provided at one end of the limiting slide groove. The synchronous telescopic rod is fixedly connected to the limiting slide plate, and the adjacent synchronous telescopic rods located on the inner and outer sides of the recovery conveyor belt are connected to each other. A plurality of hydraulic rods corresponding to the limiting slide grooves and used to push the limiting slide plate are provided on the inner wall of the recovery hole.

4. The tail gas condensate recovery device for acetate production according to claim 3, characterized in that: The recovery conveyor belt is provided with four conveying rollers for driving the recovery conveyor belt to rotate, and the conveying rollers are respectively arranged at the upper and lower ends of the adjusting groove, and the conveying rollers include a conveying shaft and a conveying gear, and the conveying shaft is rotatably connected to the adjusting groove, and a plurality of conveying gears distributed at intervals and meshing with the filter holes are provided on the conveying shaft, wherein the distance between the conveying gears allows the baffle to pass normally, and a driving motor is provided on one side of the recovery box, and the output end of the driving motor is connected to one of the conveying shafts.

5. The tail gas condensate recovery device for acetate production according to claim 1, characterized in that: The baffle plate includes a baffle plate, and there are multiple baffle plates. One end of the baffle plate is provided with a fixedly connected connecting convex plate, and the other end of the baffle plate is provided with a connecting groove corresponding to the connecting convex plate. Both ends of the connecting convex plate are provided with a connecting shaft for rotation. The connecting groove is provided with a connecting groove that is rotationally connected to the connecting shaft. A retractable positioning rod is provided at the end of the connecting convex plate, and a positioning groove is provided in the connecting groove that is engaged with the positioning rod.

6. The tail gas condensate recovery device for acetate production according to claim 5, characterized in that: A first groove is provided at one end of the connecting convex plate, and an automatic telescopic locking mechanism fixedly connected is provided in the first groove, and the telescopic end of the automatic telescopic locking mechanism is connected to the positioning rod, and a second groove is provided on the baffle plate which is connected to the other end of the first groove, and a first telescopic rod is provided in the second groove, and the first telescopic rod is fixedly connected to the first groove, and a second telescopic rod is provided in the first groove, and one end of the second telescopic rod is connected to the pressing end of the automatic telescopic locking mechanism, and the other end of the second telescopic rod is connected and fixed to the first telescopic rod, and the second telescopic rod is connected to the first telescopic rod, and the recovery conveyor belt located at the upper end of the adjusting groove is provided with adjusting rollers on both inner and outer sides, and the adjusting roller and the squeezing roller are provided with a plurality of retractable pressing convex rods for pressing the corresponding first telescopic rods.

7. The tail gas condensate recovery device for acetate production according to claim 6, characterized in that: The automatic telescopic locking mechanism adopts the automatic telescopic locking mechanism in a press-telescopic cylindrical pen.

8. The tail gas condensate recovery device for acetate production according to claim 6, characterized in that: The diameter of the first telescopic rod is larger than the diameter of the second telescopic tube.

9. The tail gas condensate recovery device for acetate production according to claim 6, characterized in that: The adjusting roller and the squeezing roller are both provided with a plurality of through grooves corresponding to the baffle plates, the through grooves are provided with a third groove, a return spring fixedly connected therein is provided in the third groove, the pressing protrusion is arranged in the third groove, and the pressing protrusion is fixedly connected to the return spring.

10. A method for recovering condensate from tail gas used in the production of acetate esters, using the condensate recovery device for tail gas used in the production of acetate esters as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1 sends the tail gas into the recovery tank through the air inlet pipe, and the tail gas enters the recovery liquid in an aerated manner through the equalizing pipe, so that the tail gas and the recovery liquid are fully contacted and adsorbed; The tail gas separated from the recovery liquid in S2 continues to rise with the airflow. When passing through the filter holes, the liquid in the airflow contacts the adsorption cotton on the recovery conveyor belt and the baffle plate, so that the liquid is adsorbed and separated, and the separated airflow is discharged through the exhaust pipe; After the adsorption cotton on the S3 baffle absorbs a certain amount of liquid, the recovery conveyor belt is controlled to rotate, and when the baffle enters the adjustment groove, the baffle is rotated to keep it flush with the recovery conveyor belt. In this way, when the baffle passes through the squeezing roller, the squeezing roller can fully squeeze and separate the liquid in the adsorption cotton on the baffle and the recovery conveyor belt, and then when the baffle enters the recovery hole again, it is rotated in an inclined state.

Images