Tert-dodecanethiol production equipment

Abstract

The utility model relates to the technical field of chemical equipment, and discloses tert-dodecanethiol production equipment which comprises a reactant input unit, a reaction unit, a flash evaporation unit and a rectification unit which are sequentially connected, the reaction unit comprises a reactor, an input port of the reactor is communicated with the reactant input unit, and an output port of the reactor is communicated with the flash evaporation unit. The output port of the reactor is communicated with the flash evaporation unit; a plurality of tube nest layers are sequentially arranged in the reactor in the vertical direction, each tube nest layer comprises a plurality of tube nests arranged in the horizontal direction, and the tube nests are used for being filled with catalysts. The tert-dodecanethiol production device has the technical effects that unreacted hydrogen sulfide can be separated from a tert-dodecanethiol crude product by arranging the flash evaporation unit, the hydrogen sulfide can be recycled, the cost can be saved, the purity of the product can be improved, meanwhile, the full contact between a reactant and a catalyst can be realized by arranging the tube nest layer, the reaction efficiency can be improved, and the production cost can be reduced. Therefore, the production efficiency and the product yield are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, and in particular relates to tert-dodecyl mercaptan production equipment. Background Art

[0002] Tert-dodecyl mercaptan (TDM) is primarily used as a molecular weight regulator in the production of products such as ABS resin, styrene-butadiene rubber, nitrile rubber, and high-impact polystyrene. It controls and adjusts the molecular weight distribution and degree of branching of the polymer, resulting in excellent physical, mechanical, and processing properties. With the continuous expansion of domestic synthetic rubber and synthetic resin production capacity, the demand for tert-dodecyl mercaptan is also increasing. To meet this growing demand, TDM production is currently mostly carried out using automated production equipment.

[0003] Existing TDM production equipment typically consists of a reactor and a distillation column. Dodecene, hydrogen sulfide, and a catalyst are introduced into the reactor for a reaction to produce a crude TDM product, which is then refined in the distillation column to obtain the finished TDM product. Since some unreacted hydrogen sulfide often remains in the crude TDM product, directly feeding the crude TDM product into the distillation column for refining fails to separate this unreacted hydrogen sulfide, leading to waste of raw materials and reduced product purity. Furthermore, due to the short contact time between the catalyst and the reactants in the reactor, the reaction cannot be fully promoted, resulting in a low product yield. Utility Model Content

[0004] In order to address the deficiencies of the prior art, the utility model provides a tert-dodecyl mercaptan production device. By arranging a flash unit between a reaction unit and a distillation unit, unreacted hydrogen sulfide can be separated from the crude tert-dodecyl mercaptan product, thereby realizing the recycling and utilization of hydrogen sulfide and saving costs, and improving the purity of the product. At the same time, by arranging a tubular layer in the reactor, sufficient contact between the reactants and the catalyst is achieved, thereby improving the reaction efficiency and thus the product yield.

[0005] The technical effects to be achieved by the present invention are achieved through the following technical aspects:

[0006] The utility model provides a tert-dodecyl mercaptan production device, comprising a reactant input unit, a reaction unit, a flash unit and a distillation unit connected in sequence, wherein the reaction unit comprises a reactor, an input port of the reactor is connected to the reactant input unit, and an output port of the reactor is connected to the flash unit;

[0007] A plurality of tube layers are arranged in sequence along the vertical direction inside the reactor. The tube layers include a plurality of tubes arranged along the horizontal direction. The tubes are used to fill catalysts.

[0008] As a further description of the technical solution of the present utility model, a plurality of first guide ring plates are arranged in a vertical direction inside the reactor, and a second guide ring plate is arranged between two adjacent first guide ring plates;

[0009] A connecting pipe is further provided at the axis center of the reactor. The outer periphery of the first guide ring plate is connected to the inner wall of the reactor, and the inner periphery of the second guide ring plate is connected to the connecting pipe.

[0010] As a further description of the technical solution of the present invention, the outer diameter of the first guide ring plate is R1 and the inner diameter is R2, the outer diameter of the second guide ring plate is R3 and the inner diameter is R4, wherein R1>R3>R2>R4.

[0011] As a further description of the technical solution of the present invention, a plurality of first guide vanes are sequentially arranged on the first guide ring plate around the axis position, and a plurality of second guide vanes are sequentially arranged on the second guide ring plate around the axis position, and the first guide vanes and the second guide vanes are both in an inclined state.

[0012] As a further description of the technical solution of the present invention, the first guide vane forms an angle α with the horizontal plane, and the second guide vane forms an angle β with the horizontal plane. The angles α and β are both 20 to 30°.

[0013] As a further description of the technical solution of the present invention, a liquid distributor is further provided in the reactor, and the liquid distributor is located above the multiple tube layers.

[0014] As a further description of the technical solution of the present invention, the reactant input unit includes a mixer, which is provided with a first input port for inputting hydrogen sulfide, a second input port for inputting dodecene, and a first output port, wherein the first output port is connected to the input port of the reactor.

[0015] As a further description of the technical solution of the present invention, the flash evaporation unit includes a first flash evaporator and a second flash evaporator connected in sequence, the output port of the reactor is connected to the first flash evaporator, the second flash evaporator is connected to the distillation unit, and a finished product tank is connected downstream of the distillation unit.

[0016] As a further description of the technical solution of the present utility model, the flash unit further includes a gas-liquid separator, the gas-liquid separator is provided with a third input port, a second output port and a third output port, the first flash evaporator is provided with a fourth output port for outputting light components, and the second flash evaporator is provided with a fifth output port for outputting light components;

[0017] The fourth output port and the fifth output port are both communicated with the third input port, the second output port is communicated with the first input port, and the third output port is communicated with the finished product tank.

[0018] As a further description of the technical solution of the present invention, the distillation unit includes a first distillation tower and a second distillation tower connected in sequence, the first distillation tower is connected to the second flash evaporator, and the second distillation tower is connected to the finished product tank.

[0019] In summary, the present invention has at least the following advantages:

[0020] The tert-dodecyl mercaptan production equipment provided by the utility model, by providing a flash unit between the reaction unit and the distillation unit, separates hydrogen sulfide that has not participated in the reaction from the crude tert-dodecyl mercaptan product. This, on the one hand, enables the recovery and reuse of hydrogen sulfide, saving production costs; on the other hand, it reduces impurities in the product and improves product purity. Furthermore, by providing multiple tubular layers in the reactor and filling the tubular layers with catalyst, the contact time between the reactants and the catalyst is prolonged, ensuring full contact between the reactants and the catalyst, effectively improving reaction efficiency, and thus increasing production efficiency and product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the tert-dodecyl mercaptan production equipment of Example 1 of the present utility model;

[0022] Figure 2 This is a schematic structural diagram of the reactor of Example 1 of the present utility model;

[0023] Figure 3 This is a top view of the tube layer of Example 1 of the present utility model;

[0024] Figure 4 This is a schematic structural diagram of a tert-dodecyl mercaptan production device according to Example 2 of the present utility model;

[0025] Figure 5 A top view of the first guide ring plate and the second guide ring plate of Example 2 of the present utility model;

[0026] Figure 6 This is a side view of the first guide vane and the second guide vane of Example 2 of the present utility model;

[0027] Figure 7 This is a structural schematic diagram of the tert-dodecyl mercaptan production equipment of Example 3 of the present utility model.

[0028] Markings in the figure:

[0029] 1. Reactant input unit; 11. Mixer; 111. First input port; 112. Second input port; 113. First output port;

[0030] 2. Reaction unit; 21. Reactor; 211. Tubular layer; 2111. Tubular layer; 212. First guide ring plate; 2121. First guide vane; 213. Second guide ring plate; 2131. Second guide vane; 214. Connecting pipe; 215. Liquid distributor;

[0031] 3. Flash unit; 31. First flash evaporator; 311. Fourth output port; 312. First compressor; 313. First condenser; 32. Second flash evaporator; 321. Fifth output port; 322. Second compressor; 323. Second condenser; 33. Gas-liquid separator; 331. Third input port; 332. Second output port; 333. Third output port;

[0032] 4. Distillation unit; 41. First distillation tower; 42. Second distillation tower; 5. Finished product tank. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, 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. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1

[0036] refer to Figures 1 to 3 The tert-dodecyl mercaptan production equipment provided in this embodiment includes a reactant input unit 1, a reaction unit 2, a flash unit 3, and a distillation unit 4, which are connected in sequence. Reaction unit 2 includes a reactor 21, the input port of which is connected to the reactant input unit 1, and the output port of which is connected to the flash unit 3. A plurality of tubular layers 211 are arranged vertically in sequence within reactor 21. Tubular layers 211 include a plurality of tubular layers 2111 arranged at equal intervals in the horizontal direction. Tubular layers 2111 are used to fill catalyst.

[0037] The reactant input unit 1 is used to transport the reactants dodecene and hydrogen sulfide to the reactor 21. The input port of the reactor 21 is located at the top of the reactor 21. The reactants flow downward from the top of the reactor 21, pass through each layer of tubing layer 211 in turn, and are output from the output port at the bottom of the reactor 21 to the flash unit 3 for flash evaporation, and then enter the distillation unit 4 for further refining to finally obtain the finished product of tert-dodecyl mercaptan.

[0038] Owing to being provided with flash distillation unit 3 in the downstream of reactor 21, the hydrogen sulfide that the residual part does not participate in the reaction in the tert-dodecyl mercaptan crude product obtained by reaction can be separated, the separated hydrogen sulfide can be recovered and put into production again, is conducive to improving the utilization rate of production raw materials, avoids the waste of production raw materials, saves production cost.The impurities in the tert-dodecyl mercaptan crude product through flash distillation treatment also can be obviously reduced, thereby can improve the purity of tert-dodecyl mercaptan finished product, improve product quality.Simultaneously, because reactant is just exported from reactor 21 bottom after layer by layer tubing layer 211, prolonged the contact time of reactant and catalyst, make the catalyst in tubing 2111 fully contact with reactant, promote the carrying out of reaction to greatest extent, effectively improve reaction efficiency, thereby improve production efficiency and product yield.

[0039] In this embodiment, the catalyst is a resin-type catalyst. On the one hand, the resin-type catalyst can be used repeatedly and has a long service life, which is beneficial to reducing production costs and improving production efficiency; on the other hand, the resin-type catalyst will not cause corrosion to the production equipment, which is beneficial to extending the service life of the production equipment and will not cause environmental pollution, making the production process safer and more environmentally friendly.

[0040] The tert-dodecyl mercaptan production equipment of this embodiment, by providing a flash evaporation unit, realizes the recovery and reuse of hydrogen sulfide that does not participate in the reaction, thereby saving production costs, reducing product impurities, and improving product purity. By providing multiple tubular layers and filling the tubular layers with catalysts, the contact time between the reactants and the catalyst is extended, allowing the reactants to fully contact the catalyst, effectively improving the reaction efficiency, and thus improving production efficiency and product yield. By using a resin-type catalyst, production costs are reduced and the safety and environmental friendliness of the production process are improved.

[0041] Example 2

[0042] As a further optimization of Example 1, refer to Figures 4 to 6The reactor 21 is vertically arranged with multiple first guide ring plates 212 inside, with a second guide ring plate 213 positioned between two adjacent first guide ring plates 212. A connecting pipe 214 is also provided at the axial center of the reactor 21. The outer periphery of the first guide ring plate 212 is connected to the inner wall of the reactor 21, while the inner periphery of the second guide ring plate 213 is connected to the connecting pipe 214. It should be noted that there is a space between each two adjacent tube layers 211. The first guide ring plates 212 and the second guide ring plates 213 are both located within this space, without interfering with the positions of the tube layers 211.

[0043] The outer periphery of the first guide ring plate 212 is connected to the inner wall of the reactor 21, so that a space for reactants to flow through is formed on the inner periphery of the first guide ring plate 212. The inner periphery of the second guide ring plate 213 is connected to the connecting pipe 214, so that a space for reactants to flow through is formed between the outer periphery of the second guide ring plate 213 and the inner wall of the reactor 21. Since the first guide ring plate 212 and the second guide ring plate 213 are staggered, the reactants flowing downward are deflected, thereby slowing the flow rate of the reactants and extending the contact time between the reactants and the catalyst to improve reaction efficiency and reaction sufficiency. Specifically, the outer diameter of the first guide ring plate 212 is R1 and the inner diameter is R2, and the outer diameter of the second guide ring plate 213 is R3 and the inner diameter is R4, wherein R1>R3>R2>R4. As a result, it is possible to ensure that the reactants form a deflection between the first guide ring plate 212 and the second guide ring plate 213, ensuring reaction efficiency and reaction sufficiency.

[0044] As a further optimization, a plurality of first guide vanes 2121 are sequentially arranged around the axis on the first guide ring 212, and a plurality of second guide vanes 2131 are sequentially arranged around the axis on the second guide ring 213. Both the first guide vanes 2121 and the second guide vanes 2131 are inclined. It is understood that the plurality of first guide vanes 2121 are evenly spaced on the first guide ring 212, forming a fan-like structure. There is space between each two adjacent first guide vanes 2121 for reactants to flow through. Because the first guide vanes 2121 are inclined, when reactants flow downward, they will collide with the first guide vanes 2121, causing some reactants to flow downward along the inclined direction of the first guide vanes 2121, while some reactants will flow back upward along the inclined direction of the first guide vanes 2121, forming a horizontal shear flow. The structure and function of the second guide vanes 2131 are the same as those of the first guide vanes 2121, and will not be described in detail again. The transverse shear flow formed by the reactants can increase the dispersion of the reactants. On the one hand, it can enhance the mixing effect of the reactants, promote full contact between the reactants and the catalyst, improve the continuity and fullness of the reaction, and improve the product yield; on the other hand, it can improve the heat transfer efficiency inside the reactor 21, so that the reactor 21 maintains a stable reaction temperature, reduces energy consumption, and ensures the stability of product quality.

[0045] By providing first guide vanes 2121 and second guide vanes 2131, the reactants within reactor 21 form not only vertical deflections but also lateral shearing flows. This creates a highly turbulent, interwoven network of flows. Combined with the dense distribution of catalyst within the tubular layer, this ensures full contact between the reactants and the catalyst, maximizing reaction efficiency. This continuous flow of reactants strengthens the kinetic foundation, enabling the reactants to quickly break through energy barriers, reducing temperature and concentration gradients during the reaction process, and effectively increasing the reaction rate.

[0046] Specifically, the first guide plate 2121 forms an angle α with the horizontal plane, and the second guide plate 2131 forms an angle β with the horizontal plane. Preferably, both angle α and angle β are 20 to 30 degrees. In this embodiment, both angle α and angle β are 25 degrees. This can enhance the lateral shearing flow of the reactants, further enhancing the mixing effect and heat transfer efficiency of the reactants, increasing the reaction rate, and improving the purity and yield of the product.

[0047] Reactor 21 is also provided with a liquid distributor 215, which is located below the input port of reactor 21 and above the multiple tubular layers 211. Reactants input from the input port of reactor 21 are first evenly distributed by liquid distributor 215 before being dispersed downward to tubular layers 211. This enhances the mixing effect of the reactants, improves the dispersion of the reactants, and ensures sufficient contact between the reactants and the catalyst, thereby improving reaction efficiency and product yield.

[0048] The tert-dodecyl mercaptan production equipment of this embodiment extends the contact time between the reactants and the catalyst through the first guide ring plate and the second guide exchange ring plate, thereby improving the reaction efficiency and reaction sufficiency; by providing the first guide plate and the second guide plate, the dispersion of the reactants is improved, the sufficient contact between the reactants and the catalyst is promoted, and the reaction rate is increased. At the same time, the heat transfer efficiency of the reactor is improved, which is conducive to controlling a stable reaction temperature and ensuring the stability of product quality; by providing a liquid distributor, the mixing effect of the reactants is enhanced, the dispersion of the reactants is improved, and the reaction efficiency and product yield are further improved.

[0049] Example 3

[0050] As a further optimization of Example 2, refer to Figure 7 The reactant input unit 1 includes a mixer 11 having a first input port 111 for inputting hydrogen sulfide, a second input port 112 for inputting dodecene, and a first output port 113. The first output port 113 is connected to the input port of the reactor 21. After being uniformly mixed in the mixer 11, the hydrogen sulfide and dodecene are transported to the reactor 21 for contact with the catalyst for an addition reaction. By fully mixing the hydrogen sulfide and dodecene before the reaction, the hydrogen sulfide and dodecene can be fully contacted, which is beneficial to improving the subsequent reaction efficiency and reaction completeness, thereby improving the purity and yield of the product.

[0051] The flash unit 3 includes a first flash evaporator 31 and a second flash evaporator 32 connected in sequence. The output port of the reactor 21 is connected to the first flash evaporator 31, and the second flash evaporator 32 is connected to the distillation unit 4. A finished product tank 5 is connected downstream of the distillation unit 4. The crude tert-dodecyl mercaptan product, the reaction product, output from the reactor 21, undergoes a first flash evaporation in the first flash evaporator 31 to remove most of the unreacted hydrogen sulfide. The crude tert-dodecyl mercaptan product in the first flash evaporator 31 is then transported to the second flash evaporator 32 for a second flash evaporation to completely remove any remaining unreacted hydrogen sulfide. After the second flash evaporation, the crude tert-dodecyl mercaptan product is then transported to the distillation unit 4 for further refining before being transported to the finished product tank 5 for storage. After two flash evaporations, the entrained unreacted hydrogen sulfide in the crude tert-dodecyl mercaptan product is completely separated, effectively improving the purity and quality of the finished tert-dodecyl mercaptan product.

[0052] In some embodiments, the flash unit 3 further includes a gas-liquid separator 33, which is provided with a third input port 331, a second output port 332, and a third output port 333. The second output port 332 is located at the top of the gas-liquid separator 33 and is used to output gaseous hydrogen sulfide, and the third output port 333 is located at the bottom of the gas-liquid separator 33 and is used to output liquid tert-dodecyl mercaptan. The first flash evaporator 31 is provided with a fourth output port 311 for outputting light hydrogen sulfide, and the second flash evaporator 32 is provided with a fifth output port 321 for outputting light hydrogen sulfide. The fourth output port 311 and the fifth output port 321 are both connected to the third input port 331, the second output port 332 is connected to the first input port 111, and the third output port 333 is connected to the finished product tank 5.

[0053] It is understood that the hydrogen sulfide evaporated from the first flash evaporator 31 and the second flash evaporator 32 is transported to the gas-liquid separator 33 for gas-liquid separation. The separated gaseous hydrogen sulfide is transported to the mixer 11 for further reaction with dodecene or for combustion as waste gas, while the separated liquid tert-dodecyl mercaptan is directly transported to the finished product tank 5 for storage. The gas-liquid separation in the gas-liquid separator 33 further separates hydrogen sulfide and tert-dodecyl mercaptan, thereby improving both the recovery rate of hydrogen sulfide and the yield of the finished tert-dodecyl mercaptan.

[0054] In some embodiments, the fourth output port 311 is provided with a first compressor 312 and a first condenser 313. The hydrogen sulfide output from the fourth output port 311 is compressed to 0.3-2.3 MPa by the first compressor 312, then cooled to 10-50°C by the first condenser, and then delivered to the gas-liquid separator 33. The fifth output port 321 is provided with a second compressor 322 and a second condenser 323. The hydrogen sulfide output from the fifth output port 321 is compressed to 0.5-1.2 MPa by the second compressor 322, then cooled to 10-30°C by the second condenser 323, and then delivered to the gas-liquid separator 33. After compression and condensation, the hydrogen sulfide enters the gas-liquid separator 33, which is more conducive to separating hydrogen sulfide from tert-dodecyl mercaptan and improving separation efficiency.

[0055] The distillation unit 4 includes a first distillation tower 41 and a second distillation tower 42, which are connected in sequence. The first distillation tower 41 is connected to the second flash evaporator 32, and the second distillation tower 42 is connected to the finished product tank 5. The first distillation tower 41 is used to separate impurities such as tetrapropylene and miscellaneous mercaptans from the crude tert-dodecyl mercaptan product. The second distillation tower 42 is used to further refine the crude tert-dodecyl mercaptan product to obtain the finished tert-dodecyl mercaptan product. After the crude tert-dodecyl mercaptan product undergoes two distillation treatments in the first distillation tower 41 and the second distillation tower 42, the resulting finished tert-dodecyl mercaptan product has fewer impurities and higher purity, with the purity of the finished tert-dodecyl mercaptan reaching over 98%.

[0056] In some embodiments, the first distillation tower 41 and the second distillation tower 42 are provided with stainless steel mesh corrugated packing, thereby improving the distillation efficiency and the product purity. The stainless steel mesh corrugated packing has a long service life, which is beneficial to controlling production costs. At the same time, the use of the packing can avoid coking and other phenomena during the distillation process, which is more conducive to the maintenance of production equipment.

[0057] The tert-dodecyl mercaptan production equipment of this embodiment improves reaction efficiency and reaction sufficiency by providing a mixer; the crude tert-dodecyl mercaptan reaction product can undergo two flash distillation treatments through the first flash evaporator and the second flash evaporator, so that the hydrogen sulfide that does not participate in the reaction can be fully separated, thereby improving the recovery rate of hydrogen sulfide and the purity of the product; the recovery rate of hydrogen sulfide and the yield of the product are further improved by providing a gas-liquid separator; and the crude tert-dodecyl mercaptan after the flash distillation treatment can undergo two distillation treatments by providing a first distillation tower and a second distillation tower, so that the finished product has a higher purity.

[0058] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0059] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0060] Although the present invention has been described with reference to the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and variations based on the above content. Therefore, all such substitutions, modifications and variations are included within the spirit and scope of the appended claims.

Claims

1. A tert-dodecyl mercaptan production device, characterized in that, The invention comprises a reactant input unit (1), a reaction unit (2), a flash unit (3) and a distillation unit (4) connected in sequence, wherein the reaction unit (2) comprises a reactor (21), an input port of the reactor (21) is connected to the reactant input unit (1), and an output port of the reactor (21) is connected to the flash unit (3); A plurality of tube layers (211) are arranged in sequence in a vertical direction inside the reactor (21), and the tube layers (211) include a plurality of tubes (2111) arranged in a horizontal direction, and the tubes (2111) are used to fill catalysts.

2. The tert-dodecyl mercaptan production equipment according to claim 1, wherein A plurality of first guide ring plates (212) are arranged in a vertical direction inside the reactor (21), and a second guide ring plate (213) is arranged between two adjacent first guide ring plates (212); A connecting pipe (214) is further provided at the axial center of the reactor (21); the outer periphery of the first guide ring plate (212) is connected to the inner wall of the reactor (21); and the inner periphery of the second guide ring plate (213) is connected to the connecting pipe (214).

3. The tert-dodecyl mercaptan production equipment according to claim 2, wherein The outer diameter of the first guide ring plate (212) is R1 and the inner diameter is R2, and the outer diameter of the second guide ring plate (213) is R3 and the inner diameter is R4, wherein R1>R3>R2>R4.

4. The tert-dodecyl mercaptan production equipment according to claim 3, wherein A plurality of first guide vanes (2121) are sequentially arranged on the first guide ring plate (212) around the axis position, and a plurality of second guide vanes (2131) are sequentially arranged on the second guide ring plate (213) around the axis position, and both the first guide vanes (2121) and the second guide vanes (2131) are in an inclined state.

5. The tert-dodecyl mercaptan production equipment according to claim 4, wherein The first guide plate (2121) forms an angle α with the horizontal plane, and the second guide plate (2131) forms an angle β with the horizontal plane, and both the angle α and the angle β are 20 to 30 degrees.

6. The tert-dodecyl mercaptan production equipment according to claim 1, characterized in that, The reactor (21) is further provided with a liquid distributor (215), and the liquid distributor (215) is located above the plurality of tubular layers (211).

7. The tert-dodecyl mercaptan production equipment according to claim 1, characterized in that, The reactant input unit (1) comprises a mixer (11), wherein the mixer (11) is provided with a first input port (111) for inputting hydrogen sulfide, a second input port (112) for inputting dodecene, and a first output port (113), wherein the first output port (113) is communicated with the input port of the reactor (21).

8. The tert-dodecyl mercaptan production equipment according to claim 7, characterized in that, The flash evaporation unit (3) comprises a first flash evaporator (31) and a second flash evaporator (32) connected in sequence, the output port of the reactor (21) is in communication with the first flash evaporator (31), the second flash evaporator (32) is connected to the distillation unit (4), and a finished product tank (5) is connected downstream of the distillation unit (4).

9. The tert-dodecyl mercaptan production equipment according to claim 8, characterized in that, The flash evaporation unit (3) further comprises a gas-liquid separator (33), the gas-liquid separator (33) being provided with a third input port (331), a second output port (332) and a third output port (333); the first flash evaporator (31) being provided with a fourth output port (311) for outputting light components; and the second flash evaporator (32) being provided with a fifth output port (321) for outputting light components; The fourth output port (311) and the fifth output port (321) are both in communication with the third input port (331), the second output port (332) is in communication with the first input port (111), and the third output port (333) is in communication with the finished product tank (5).

10. The tert-dodecyl mercaptan production equipment according to claim 8, characterized in that: The distillation unit (4) comprises a first distillation tower (41) and a second distillation tower (42) connected in sequence, wherein the first distillation tower (41) is connected to the second flash evaporator (32), and the second distillation tower (42) is connected to the finished product tank (5).

Images