A new type of coke continuous process for producing carbon disulfide liquid sulfur washing and cooling tower
By designing a new liquid sulfur washing and cooling tower in the continuous production of carbon disulfide in the coke continuous method, using interlaced conductive parts and wire mesh defoamers, the problems of low efficiency and high power consumption in the existing process are solved, and efficient mass transfer and heat transfer and power consumption are achieved.
Patent Information
- Application Number
- CN202420677301.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-04-03
AI Technical Summary
The existing coke batch method carbon disulfide production process has low efficiency, resulting in insufficient overall process optimization, and the mass transfer and heat transfer efficiency of the liquid sulfur washing and cooling tower are low, increasing the circulation volume of liquid sulfur and electricity consumption.
A new coke continuous method is designed to produce carbon disulfide liquid sulfur washing and cooling tower, using staggered conductive parts to form cooling channels, and the mass transfer efficiency is improved through wire mesh defoamer and multi-layer screen plate structure.
It improves the washing and cooling efficiency, reduces the circulation amount of liquid sulfur and electricity consumption, and achieves an efficient mass and heat transfer process.
Smart Images
Figure CN222738841U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical industry, in particular to a novel coke continuous method for producing carbon disulfide liquid sulfur washing and cooling tower. Background Art
[0002] At present, the "coke continuous method for producing carbon disulfide" is still in the development stage. Since the closure, shutdown and dismantling of the "coke intermittent method for producing carbon disulfide" across the country at the end of 2015, no company has implemented the "coke continuous method for producing carbon disulfide" project. Only Henan Hebi Tianhong Industrial Co., Ltd. has been involved in a project that has only made partial civil construction progress since the project was approved in 2017. The company conducted a one-thousand-ton reactor field test in 2019 and obtained on-site acceptance from the Ministry of Science and Technology. There has been no progress since then.
[0003] From the public patents and the relevant information of the liquid sulfur washing and cooling tower used in the natural gas method for producing carbon disulfide, it is learned that all tower types are empty tower spray structures. The main problem with empty tower spray is the low efficiency, which makes the overall process optimization insufficient. The existing washing tower is based on the scale of 30,000 tons / year CS2 products, and is basically a 1500 diameter, 6000 height, and a four-layer spray empty tower is set inside. The crude CS2 gas enters from the bottom of the tower and contacts with the sulfur liquid sprayed at different heights on the four layers in countercurrent. The crude CS2 gas is cooled and the gaseous sulfur contained therein is partially condensed and taken out with the liquid sulfur. The crude CS2 gas after liquid sulfur washing and cooling comes out from the top of the tower to the water washing and cooling tower. The liquid sulfur at the bottom of the tower is collected in the high-temperature liquid sulfur tank and pumped to the reactor by the liquid sulfur pump. There are no mass transfer and heat transfer elements in the tower, only the liquid phase distribution function of the liquid sulfur nozzle, which makes the mass transfer and heat transfer efficiency in the tower very low. In order to ensure the realization of the process indicators, the liquid injection amount is increased, which increases the circulation amount of liquid sulfur and the circulation power consumption. In order to ensure the washing and cooling efficiency, it is considered that the tower height is increased and multi-layer nozzles are set, which increases the equipment cost. Utility Model Content
[0004] The purpose of the utility model is to provide a novel coke continuous process for producing carbon disulfide liquid sulfur washing and cooling tower in order to solve the above problems.
[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:
[0006] A novel coke continuous process carbon disulfide liquid sulfur washing and cooling tower comprises a tower body, wherein the upper and lower parts of the tower body are respectively provided with an air outlet and an air inlet, a wire mesh demister is provided below the air outlet and within the tower body, a plurality of conductive members are staggered within the tower body, and a cooling channel is formed between the plurality of conductive members and the inner wall of the tower body; a first liquid inlet for introducing liquid sulfur from a low-temperature liquid sulfur tank is provided on one side of the tower body and above the conductive member at the uppermost end, and a second liquid inlet for introducing liquid sulfur from a high-temperature liquid sulfur tank is provided below the first liquid inlet.
[0007] Preferably, the conductive member comprises a sieve plate, one end of which is fixed to the inner wall of the tower body, and the other end of the sieve plate is inclined downward and a gap is provided between the sieve plate and the inner wall of the tower body.
[0008] Preferably, the angle between a parallel line along the axial direction of the screen plate and a parallel line along the axial direction of the tower body is 84-87°.
[0009] Preferably, a plurality of the sieve plates are located at the upper half of the tower body.
[0010] Preferably, the second liquid passage is located above the lowermost sieve plate.
[0011] The beneficial effects are:
[0012] The utility model allows the high-temperature reaction gas from the front section to enter from the lower part of the tower, pass through six and a half sieve plates, pass through the wire mesh demister at the top of the tower, and then go to the rear equipment from the top of the tower; liquid sulfur from the low-temperature liquid sulfur tank is poured in from the upper part of the tower and the first and a half sieve plates from the top, and liquid sulfur from the high-temperature liquid sulfur tank is poured in from the third plate from the top, and after being collected at the bottom of the tower, it is discharged into the high-temperature liquid sulfur tank for circulation; part of the high-temperature liquid sulfur is sent to the liquid sulfur heater at the lower part of the reactor to be heated and volatilized and then participate in the reaction; the overall liquid is fed through two stages to ensure the outlet temperature of the upper stage and the washing effect of the lower stage, and the high-temperature liquid sulfur circulation is adopted in the lower stage, which can not only achieve the washing efficiency, but also ensure the efficiency of the high-temperature liquid sulfur being heated. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the utility model 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 described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0015] The following are the descriptions of the reference numerals:
[0016] 1 is the tower body, 2 is the air outlet, 3 is the wire mesh demister, 4 is the sieve plate, 5 is the air inlet, 6 is the first liquid outlet, and 7 is the second liquid outlet. DETAILED DESCRIPTION
[0017] The following is combined with Figure 1 , the technical solution of the utility model is further explained:
[0018] like Figure 1 As shown, the utility model discloses a novel coke continuous process carbon disulfide liquid sulfur washing and cooling tower, comprising a tower body 1, wherein the upper and lower parts of the tower body 1 are respectively provided with an air outlet 2 and an air inlet 5, and a wire mesh demister 3 is provided below the air outlet 2 and inside the tower body 1. That is, the high temperature reactor enters the tower body from the air inlet at the bottom of the tower, is cooled from bottom to top, passes through the wire mesh demister, and is discharged from the air outlet at the upper part of the tower body.
[0019] Specifically, a plurality of conductive members are staggered in the tower body 1, and cooling channels are formed between the plurality of conductive members and the inner wall of the tower body 1. In other words, a plurality of conductive members are staggered in the tower body, and the conductive members increase the mass transfer and heat transfer components in the tower body, thereby improving the washing and cooling efficiency, achieving a low circulation volume and reducing power consumption.
[0020] In some embodiments, the conductive member includes a sieve plate 4, one end of which is fixed to the inner wall of the tower body 1, and the other end of the sieve plate 4 is tilted downward and is spaced from the inner wall of the tower body 1. That is, a plurality of sieve plates are staggered and tilted in the tower body, and the sieve plates are in the form of half sieve plates, that is, one end of the sieve plate is fixed, and the other end tilts downward and extends a distance, leaving a certain distance from the inside of the tower body.
[0021] It should be noted that in this embodiment, the number of sieve plates 4 is six, and several of the sieve plates 4 are located at the upper half of the tower body. In other words, six sieve plates are installed near the upper half of the tower body.
[0022] In some embodiments, the angle between the parallel line along the axial direction of the sieve plate 4 and the parallel line along the axial direction of the tower body 1 is 84-87 degrees. In other words, the sieve plate is arranged in the tower body with an angle of 6 degrees between the sieve plate and the vertical direction of the tower body in this embodiment.
[0023] Specifically, Figure 1As shown, a first liquid port 6 for introducing liquid sulfur from a low-temperature liquid sulfur tank is provided on one side of the tower body 1 and above the uppermost conducting member, and a second liquid port 7 for introducing liquid sulfur from a high-temperature liquid sulfur tank is provided below the first liquid port 6. That is, the high-temperature reaction gas entering the tower body from the bottom of the tower exchanges heat with the liquid sulfur from the high-temperature liquid sulfur tank, and then fully exchanges heat and cools with the liquid sulfur from the low-temperature liquid sulfur tank again, and finally is discharged from the gas outlet at the top of the tower body. The liquid sulfur from the high-temperature sulfur tank is heated and collected at the bottom of the tower, and then discharged into the high-temperature liquid sulfur tank for circulation; part of the high-temperature liquid sulfur is sent to the liquid sulfur heater at the bottom of the reactor to be heated and volatilized before participating in the reaction.
[0024] In some embodiments, the second liquid port 7 is located above the lowest sieve plate 4. That is, the second liquid port can also be arranged above the bottom sieve plate, and the liquid sulfur from the high-temperature liquid sulfur tank is poured from the sieve plate to fully exchange heat with the high-temperature reaction gas, and the liquid sulfur is heated and discharged into the high-temperature sulfur tank for circulation.
[0025] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A novel coke continuous process for producing carbon disulfide liquid sulfur washing and cooling tower, comprising a tower body, wherein the upper and lower parts of the tower body are respectively provided with an air outlet and an air inlet, and a wire mesh demister is provided below the air outlet and within the tower body, characterized in that: A plurality of conducting members are staggeredly arranged in the tower body, and cooling channels are formed between the plurality of conducting members and the inner wall of the tower body; a first liquid inlet for introducing liquid sulfur from a low-temperature liquid sulfur tank is arranged above the conducting member at the uppermost end on one side of the tower body, and a second liquid inlet for introducing liquid sulfur from a high-temperature liquid sulfur tank is arranged below the first liquid inlet.
2. The novel coke continuous process for producing carbon disulfide liquid sulfur washing and cooling tower according to claim 1, characterized in that: The conductive member comprises a sieve plate, one end of which is fixed to the inner wall of the tower body, and the other end of which is inclined downward and is spaced from the inner wall of the tower body.
3. The novel coke continuous process for producing carbon disulfide liquid sulfur washing and cooling tower according to claim 2, characterized in that: The angle between the parallel line along the axial direction of the screen plate and the parallel line along the axial direction of the tower body is 30°-90°.
4. The novel coke continuous process for producing carbon disulfide liquid sulfur washing and cooling tower according to claim 2 or 3, characterized in that: A plurality of sieve plates are located at the upper half of the tower body.
5. The novel coke continuous process for producing carbon disulfide liquid sulfur washing and cooling tower according to claim 1, characterized in that: The second liquid passage is located above the lowermost sieve plate.