Integrated condensing device at top end of chlorophenol rectifying tower

Abstract

The utility model relates to an integrated condensing device at the top end of a chlorophenol rectifying tower, a cover plate of the condensing device is fixedly connected with an upper port of the rectifying tower through a connecting flange, and an auxiliary pressing mechanism formed by an auxiliary flange, a long screw rod and a pressure spring is arranged between the cover plate and the upper port of the rectifying tower. The auxiliary pressing mechanism can temporarily press the cover plate in an auxiliary mode, the connection compactness of the cover plate is guaranteed, the problem that a large amount of materials are leaked due to the fact that inspection tour is not timely is solved, the waiting time of high-altitude maintenance work is prolonged, and it can be guaranteed that a rectifying tower operates continuously; the condensing device is provided with a large number of condensing pipes which are arranged side by side and make contact with cooling water to improve the condensing efficiency and the condensing effect, baffles which are arranged alternately are arranged to delay the circulating flowing speed of the cooling water, the heat exchange time is prolonged, heat utilization is more sufficient, and the use amount of the cooling water is reduced.

Description

Technical Field

[0001] The utility model relates to the field of distillation tower condensation equipment, in particular to an integrated condensation device at the top of a chlorophenol distillation tower. Background Art

[0002] Chlorophenol is an important chemical raw material with a wide range of applications. The main chlorinated phenols include o-chlorophenol, p-chlorophenol, dichlorophenol, trichlorophenol, etc.

[0003] The current commonly used industrial production method for chlorophenols is to react phenol with chlorine, and then obtain various chlorophenols through distillation. A condensing device is usually installed on the top of the distillation tower used for the distillation of chlorophenols to condense and separate the materials.

[0004] At present, the height of chlorophenol distillation tower is generally higher than 20 meters, and can reach up to 100 meters at most. The top cover of the condensing device is affected by the pressure inside the tower body and factors such as rust, and the cover may become loose. If it is not inspected in time, the looseness will be serious and cause a large amount of material leakage. In addition, in special weather conditions, maintenance work cannot be carried out at high altitude in time, which will lead to production suspension. In addition, the current condensing device still has a large consumption of cooling water, and there is room for further optimization and improvement. Utility Model Content

[0005] In order to solve the above problems, the utility model proposes an integrated condensing device at the top of a chlorophenol distillation tower.

[0006] The technical scheme of the utility model is: an integrated condensing device at the top of a chlorophenol distillation tower, comprising a condensing cylinder installed at the upper port of the distillation tower, the upper port of the condensing cylinder is provided with a cover plate, the center of the cover plate is connected with a tail gas pipe, the lower port of the condensing cylinder is provided with a lower supporting plate, the lower supporting plate and the condensing cylinder are welded and fixed as one, the upper port is provided with an upper supporting plate, the upper supporting plate and the condensing cylinder are fixedly connected as one, a plurality of circular jacks are densely distributed on the lower supporting plate and the upper supporting plate, condensing tubes are correspondingly connected between the upper and lower jacks, and a plurality of baffles are staggered between the condensing tubes, and adjacent baffles are staggered, circular jacks are also provided on the baffles, and the condensing tubes are inserted into the jacks on the baffles, a water inlet pipe is provided on the side wall of the lower end portion of the condensing cylinder, and a water outlet pipe is provided on the upper side wall.

[0007] Preferably, the water inlet pipe is located between the lowermost baffle plate and the lower support plate, and the water outlet pipe is located between the uppermost baffle plate and the upper support plate.

[0008] Preferably, one side of the baffle is fixedly connected to the inner wall of the condensing cylinder, and a gap is provided between the other side and the inner wall of the condensing cylinder.

[0009] Preferably, the cover plate and the condensing cylinder are fixedly connected via a connecting flange and fastening bolts, and the flange on the cover plate and the flange on the condensing cylinder are fixedly connected as a whole via bolts.

[0010] Preferably, the connecting flange of the cover plate and the cover plate body are fixedly connected as a whole via an annular ring, the annular ring and the cover plate body are coaxially arranged, an auxiliary flange is formed between the annular ring and the cover plate body, the size of the auxiliary flange is the same as the size of the connecting flange, and an auxiliary clamping mechanism is provided between the auxiliary flange and the condensing cylinder.

[0011] Preferably, the auxiliary clamping mechanism includes a long screw and a compression spring. The long screw is inserted between the connecting flange and the auxiliary flange. A limiting nut is provided at the lower end of the long screw and a limiting plate is provided at the upper end. The compression spring is mounted on the screw body between the limiting nut and the limiting plate, and the compression spring is a spiral leaf spring.

[0012] Preferably, an elbow is provided at the upper end of the tail gas pipe, and a recovery pipe is connected to the outer end of the elbow.

[0013] Preferably, a steam heating pipe is wound around the tail pipe and the elbow pipe, and a heat-insulating material is provided on the outer side of the steam heating pipe.

[0014] The beneficial technical effects of the utility model are:

[0015] (1) The cover plate of the condensing device is fixedly connected to the upper port of the distillation tower through a connecting flange, and an auxiliary clamping mechanism formed by an auxiliary flange, a long screw and a compression spring is provided between the cover plate and the upper port of the distillation tower. When the connecting flange becomes loose, the auxiliary clamping mechanism can temporarily assist in clamping the cover plate to ensure the tightness of the cover plate connection, thereby solving the problem of large-scale material leakage due to untimely inspection, increasing the waiting time for high-altitude maintenance operations, avoiding the problem of high safety risks in maintenance operations in adverse weather environments, and ensuring continuous and uninterrupted operation of the distillation tower.

[0016] (2) The condensing device arranges a large number of condensing tubes in parallel to contact the cooling water to improve the condensation efficiency and condensation effect, and sets up alternating baffles to slow down the circulation flow rate of the cooling water, increase the heat exchange time, and make heat utilization more effective, which is conducive to reducing the amount of cooling water used. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 2 yes Figure 1 A partial enlarged view of

[0019] Figure 3 yes Figure 1 AA section structural diagram;

[0020] Figure 4 yes Figure 1 BB-direction cross-sectional structural diagram;

[0021] In the figure, 11. distillation tower, 12. condensation cylinder, 121. lower support plate, 122. upper support plate, 123. condenser, 124. baffle, 125. water inlet pipe, 126. water outlet pipe, 13. cover plate, 131. connecting flange, 132. fastening bolts, 14. tail gas pipe, 141. elbow, 142. recovery pipe, 15. auxiliary clamping mechanism, 151. annular ring, 152. auxiliary flange, 153. long screw, 154. compression spring, 155. limit nut, 156. limit plate. DETAILED DESCRIPTION

[0022] Example 1, see the attached specification Figure 1 , 4 A chlorophenol distillation tower top integrated condensing device comprises a condensing cylinder 12 installed at the upper end of a distillation tower 11, a cover plate 13 is provided at the upper end of the condensing cylinder 12, the upper end of the condensing cylinder 12 is sealed by the cover plate 13, a tail gas pipe 14 is connected to the center of the cover plate 13, a lower support plate 121 is provided at the lower end of the condensing cylinder 12, an upper support plate 122 is provided at the upper end, a plurality of plug holes are densely distributed on the lower support plate 121 and the upper support plate 122, and the upper and lower plug holes are connected correspondingly. A condenser 123 is connected, and a flow space for cooling water is formed between the upper support plate 122, the lower support plate 121 and the condenser 123, and a plurality of baffles 124 are alternately arranged between the condenser 123, and adjacent baffles 124 are arranged alternately, with the upper baffle 124 being located at the upper end of the condenser cylinder 12, and the lower baffle 124 being located at the lower end of the condenser cylinder 12; a water inlet pipe 125 is provided on the side wall of the lower end of the condenser cylinder 12, and a water outlet pipe 126 is provided on the upper side wall.

[0023] The water inlet pipe 125 is located between the lowermost baffle 124 and the lower support plate 121 , and the water outlet pipe 126 is located between the uppermost baffle 124 and the upper support plate 122 . Cooling water enters the condensing cylinder 12 from the water inlet pipe 125 , and then can pass through all the baffles 124 and flow out from the water outlet pipe 126 .

[0024] One side of the baffle 124 is fixedly connected to the inner wall of the condensing cylinder 12, and a gap is provided between the other side and the inner wall of the condensing cylinder 12. The gap is a circulation channel for cooling water. The cooling water is blocked by the baffle 124 and can circulate back and forth, thereby increasing the flow time in the condensing cylinder 12.

[0025] An elbow 141 is provided at the upper end of the tail gas pipe 14, and a recovery pipe 142 is connected to the outer end of the elbow 141. A steam heating pipe is wound around the tail gas pipe 14 and the elbow 141, and the steam heating pipe is used to heat and insulate the tail gas pipe 14 to avoid internal crystallization blockage.

[0026] When the condensing device of this embodiment is in operation, the distilled material enters into each condenser tube 123 from the upper port of the distillation tower 11 and flows upward, and at the same time, cooling water enters into the cooling water flow space inside the condenser cylinder 12 from the water inlet pipe 125, and is discharged from the water outlet pipe 126 on the upper part of the condenser cylinder 12 to form a cooling water circulation. In this process, the cooling water fully contacts with each condenser tube 123 to exchange heat, and the material inside the condenser tube 123 is condensed and separated, and the tail gas of the material is discharged from the upper end of the condenser tube 123 into the cover plate 13, and then discharged from the tail gas pipe 14. In addition, during the upward flow of the condensed water, the alternately arranged baffles 124 can slow down the circulation flow speed of the cooling water, increase the heat exchange time with the condenser tube 123, make the heat utilization more sufficient, and effectively reduce the amount of cooling water.

[0027] Example 2, see the attached specification Figure 1 , 2 The cover plate 13 and the condensing cylinder 12 in the first embodiment are fixedly connected by a connecting flange 131 and a fastening bolt 132, and the connecting flange 131 of the cover plate 13 and the cover plate 13 body are fixedly connected as a whole by an annular ring 151. The annular ring 151 forms a cavity inside the cover plate 13, and an auxiliary flange 152 is formed between the annular ring 151 and the cover plate 13 body. An auxiliary clamping mechanism 15 is provided between the auxiliary flange 152 and the condensing cylinder 12.

[0028] The auxiliary clamping mechanism 15 includes a long screw 153 and a compression spring 154. The long screw 153 is inserted between the connecting flange 131 and the auxiliary flange 152. The upper end of the long screw 153 extends upward from the cover plate 13 by a certain distance. The lower end of the long screw 153 is provided with a limiting nut 155, and the upper end is provided with a limiting plate 156. The compression spring 154 is mounted on the screw body between the limiting nut 155 and the limiting plate 156. The elastic pressure of the spring can apply an elastic clamping force to the cover plate 13.

[0029] The principle of the auxiliary clamping mechanism 15 is as follows: when the condensing device is working normally, the cover plate 13 of the condensing cylinder 12 is fixedly connected to the upper port of the distillation tower 11 through the connecting flange 131. When the connecting flange 131 becomes loose due to internal pressure, rust and other factors, the cover plate 13 will become loose and separated. At this time, the spring of the auxiliary clamping mechanism 15 can temporarily assist in clamping the cover plate 13 under the guidance of the long screw 153, ensuring that the cover plate 13 is in a relatively closed state, avoiding the problem of large-scale material leakage, and increasing the waiting time for high-altitude maintenance operations. When the weather and time are right, high-altitude maintenance operations can be carried out to ensure the continuous and uninterrupted operation of the distillation tower 11.

Claims

1. An integrated condensing device at the top of a chlorophenol rectification tower, characterized in that: It includes a condensing cylinder installed at the upper port of a distillation tower, the upper port of the condensing cylinder is provided with a cover plate, the center of the cover plate is connected to a tail gas pipe, the lower port of the condensing cylinder is provided with a lower support plate, the upper port is provided with an upper support plate, a plurality of plug holes are densely distributed on the lower support plate and the upper support plate, condensing tubes are correspondingly connected between the upper and lower plug holes, and a plurality of baffles are staggered between the condensing tubes, and adjacent baffles are staggered, a water inlet pipe is provided on the side wall of the lower end portion of the condensing cylinder, and a water outlet pipe is provided on the upper side wall.

2. The integrated condensing device at the top of a chlorophenol rectification tower according to claim 1, characterized in that: The water inlet pipe is located between the lowermost baffle plate and the lower support plate, and the water outlet pipe is located between the uppermost baffle plate and the upper support plate.

3. The integrated condensing device at the top of a chlorophenol rectification tower according to claim 1, characterized in that: One side of the baffle is fixedly connected to the inner wall of the condensing cylinder, and a gap is provided between the other side and the inner wall of the condensing cylinder.

4. The integrated condensing device at the top of a chlorophenol rectification tower according to claim 1, characterized in that: The cover plate and the condensing cylinder are fixedly connected via a connecting flange and fastening bolts.

5. The integrated condensing device at the top of a chlorophenol rectification tower according to claim 4, characterized in that: The connecting flange of the cover plate and the cover plate body are fixedly connected as a whole via an annular ring, an auxiliary flange is formed between the annular ring and the cover plate body, and an auxiliary pressing mechanism is provided between the auxiliary flange and the condensing cylinder.

6. The integrated condensing device at the top of a chlorophenol distillation tower according to claim 5, characterized in that: The auxiliary clamping mechanism includes a long screw and a compression spring. The long screw is inserted between the connecting flange and the auxiliary flange. A limiting nut is provided at the lower end of the long screw and a limiting plate is provided at the upper end. The compression spring is sleeved on the screw body between the limiting nut and the limiting plate.

7. The integrated condensing device at the top of a chlorophenol rectification tower according to claim 1, characterized in that: The upper end of the tail gas pipe is provided with an elbow, and the outer end of the elbow is connected with a recovery pipe.

8. The integrated condensing device at the top of a chlorophenol rectification tower according to claim 7, characterized in that: The tail pipe and the elbow pipe are wound with a steam heating pipe.

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