Pure olefin feeding structure for alkylbenzene production

Abstract

The utility model relates to the technical field of alkylbenzene production, in particular to a pure olefin feeding structure for alkylbenzene production, which is characterized in that the inner wall of a mounting disc is fixedly connected with a connecting pipe, the inner wall of the connecting pipe is slidably connected with a pressing rod main body, one end of the connecting pipe penetrates through the inner wall of a reaction device, and the penetrating end is communicated with a middle connecting block; a feeding hole is formed in the upper end of the middle connecting block, a material guide block is mounted at one end, far away from the mounting disc, of the middle connecting block, and after the elastic element cannot bear pressure, the first sealing main body and the second sealing main body are driven to be far away from each other through the first side connecting block and the second side connecting block, so that liquid can enter the material guide block and enter a reaction device through the material guide block; at the moment, the first sealing main body and the second sealing main body are driven to be attached and sealed again through the counter-acting force of the elastic element, and the operation is repeated after the liquid is pushed and accumulated to a certain weight again, so that the purpose of timed and quantitative blanking is achieved, and too fast blanking during mass production is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to alkylbenzene production technical field, concretely is a kind of pure olefin feed structure for alkylbenzene production. BACKGROUND

[0002] The production of alkylbenzene mainly relies on the condensation reaction of benzene and long-chain olefins. These olefins usually include alpha-olefins, normal internal olefins and isomeric olefins. In industrial production, the purity of olefins is a key factor, as it directly affects the quality and yield of alkylbenzene products. Therefore, pure olefins are the first choice in the production of alkylbenzene. In the production process of alkylbenzene, the feeding method of olefins may vary depending on the production process and equipment. Generally speaking, olefin feed needs to be supplied stably and continuously to the reaction device. However, the existing pure olefin feeding structure for alkylbenzene production may feed olefins too quickly when producing a large amount of alkylbenzene, which may shorten the contact time of the catalyst with the monomer, making it difficult to control the reaction rate, leading to unstable polymerization reaction process and reduced product quality.

[0003] To solve the above problems, the utility model provides a pure olefin feeding structure for alkylbenzene production. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a pure olefin feeding structure for alkylbenzene production, thereby solving the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a pure olefin feeding structure for alkylbenzene production, comprising a feeding assembly installed on a reaction device, the feeding assembly comprising a mounting disc lapped on the outer wall of the reaction device, the inner wall of the mounting disc being fixedly connected with a connecting pipe, the inner wall of the connecting pipe being slidably connected with a pressure rod main body, one end of the connecting pipe penetrating the inner wall of the reaction device and being in communication with a middle connecting block at the penetrating end, the upper end of the middle connecting block being provided with a feeding port, and the end of the middle connecting block away from the mounting disc being provided with a material guiding block;

[0006] The two side walls of the material guiding block are each provided with a movable slot, the inner walls of the two groups of movable slots being slidably connected with a first sealing main body and a second sealing main body, one end of the first sealing main body being fixedly connected with a first side connecting block, one end of the second sealing main body being fixedly connected with a second side connecting block, and the ends of the first side connecting block and the second side connecting block away from each other being fixedly connected with an elastic element.

[0007] Preferably, the ends of the elastic element away from the first side connecting block and the second side connecting block are fixedly connected with the inner wall of the material guiding block.

[0008] Preferably, the first sealing main body and the first side connecting block are symmetrically distributed about the center of the material guiding block with the second sealing main body and the second side connecting block.

[0009] Preferably, the first side block and the second side block are in close contact with each other in the relaxed state of the elastic element.

[0010] Preferably, the first sealing body and the second sealing body are both made of rubber.

[0011] Preferably, one end of the pressing rod body is fixedly connected with a piston body, the piston body is fixedly connected with a reset spring and a separation rod at an end away from the pressing rod body, one end of the reset spring is fixedly connected with the middle block, and one end of the separation rod penetrates through the middle block and is arranged on one side of the first sealing body and the second sealing body.

[0012] Preferably, the piston body and the inner wall of the middle block are in sliding connection.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The alkyl benzene production pure olefin feeding structure provided by the utility model can realize timed and quantitative feeding, avoid feeding too fast in mass production, and solve the problems that, in mass production of alkyl benzene, olefin may be fed too fast, the contact time of the catalyst and the monomer may be shortened, the reaction rate is difficult to control, the polymerization reaction process is unstable, and the product quality is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole three-dimensional structure schematic view of the utility model;

[0016] Figure 2 It is a feeding assembly three-dimensional structure schematic view of the utility model;

[0017] Figure 3 It is a feeding assembly plane structure schematic view of the utility model;

[0018] Figure 4 It is a feeding assembly plane structure schematic view of the utility model; Figure 3 It is an A enlarged structure schematic view of the utility model.

[0019] In the figure: 1, reaction device; 2, feed assembly; 21, mounting disc; 22, connecting pipe; 23, pressure rod main body; 24, middle connecting block; 25, feed port; 26, movable groove; 27, first sealing main body; 28, second sealing main body; 29, first side connecting block; 210, second side connecting block; 211, elastic element; 212, piston main body; 213, return spring; 214, separation rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Please refer to Figures 1-4 In order to solve the problem that when a large amount of alkylbenzene is produced, olefins may be fed too fast, which may make the contact time of the catalyst and monomers shorter, the reaction rate difficult to control, the polymerization reaction process unstable, and the product quality decreased, the following preferred technical solutions are provided:

[0022] An alkylbenzene production pure olefin feeding structure, comprising a feed assembly 2 mounted on a reaction device 1, the feed assembly 2 comprising a mounting disc 21 lapped on the outer wall of the reaction device 1, the inner wall of the mounting disc 21 being fixedly connected with a connecting pipe 22, the inner wall of the connecting pipe 22 being slidably connected with a pressure rod main body 23, one end of the connecting pipe 22 penetrating the inner wall of the reaction device 1 and being communicated with a middle connecting block 24 at the penetrating end, the upper end of the middle connecting block 24 being provided with a feed port 25, and a material guiding block being mounted on the end of the middle connecting block 24 away from the mounting disc 21, two side walls of the material guiding block being provided with movable grooves 26, the inner walls of the two groups of movable grooves 26 being slidably connected with a first sealing main body 27 and a second sealing main body 28, one end of the first sealing main body 27 being fixedly connected with a first side connecting block 29, and one end of the second sealing main body 28 being fixedly connected with a second side connecting block 210, the ends of the first side connecting block 29 and the second side connecting block 210 away from each other being fixedly connected with elastic elements 211.

[0023] The ends of the elastic elements 211 away from the first side connecting block 29 and the second side connecting block 210 are fixedly connected with the inner walls of the material guiding block, the first sealing main body 27 and the first side connecting block 29 and the second sealing main body 28 and the second side connecting block 210 are symmetrically distributed about the center of the material guiding block, the first side connecting block 29 and the second side connecting block 210 and the first sealing main body 27 and the second sealing main body 28 are mutually attached in the relaxed state of the elastic elements 211, and the first sealing main body 27 and the second sealing main body 28 are both members made of rubber material.

[0024] One end of the pressure rod body 23 is fixedly connected with a piston body 212, one end of the piston body 212 away from the pressure rod body 23 is fixedly connected with a reset spring 213 and a separation rod 214, one end of the reset spring 213 away from the piston body 212 is fixedly connected with the middle connecting block 24, one end of the separation rod 214 penetrates through the middle connecting block 24, and the penetrating end thereof is lapped on one side of the first sealing body 27 and the second sealing body 28, and the piston body 212 and the inner wall of the middle connecting block 24 are in sliding connection.

[0025] Specifically, when producing alkylbenzene, pure olefin liquid needs to be added to the reaction device 1, at this time, the liquid can be continuously transported to the feed inlet 25, and the transported liquid is sealed in the cavity of the middle connecting block 24 by the lapping of the first sealing body 27 and the second sealing body 28. As the liquid accumulation becomes more and more, the first sealing body 27 and the second sealing body 28 are continuously pressed, and after the elastic element 211 cannot withstand the pressure, the first sealing body 27 and the second sealing body 28 are driven away from each other by the first side connecting block 29 and the second side connecting block 210, so that the liquid can enter the guide block and then enter the reaction device 1. At this time, the first sealing body 27 and the second sealing body 28 are resealed by the reaction force of the elastic element 211, and the above operation is repeated after the liquid is re-accumulated to a certain weight, so as to realize the purpose of timed and quantitative feeding, avoid over-fast feeding in mass production, and solve the problem that in mass production of alkylbenzene, olefin may be fed too fast, which may shorten the contact time of the catalyst and the monomer, make it difficult to control the reaction rate, and cause unstable polymerization reaction process and decreased product quality.

[0026] The pressure rod body 23 can be pressed to drive the piston body 212 to move, so as to compress the reset spring 213. At this time, the separation rod 214 can be inserted into the first sealing body 27 and the second sealing body 28 to directly open them. When the pressure rod body 23 is released, it will return to the original position under the action of the reset spring 213, so that the seal can be opened by external force, and blockage can be avoided.

[0027] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0028] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pure olefin feed structure for alkyl benzene production comprising a feed assembly (2) mounted on a reaction unit (1), characterized in that: The feeding assembly (2) comprises a mounting disc (21) lapped on the outer wall of the reaction device (1), the inner wall of the mounting disc (21) is fixedly connected with a connecting pipe (22), the inner wall of the connecting pipe (22) is slidably connected with a pressing rod body (23), one end of the connecting pipe (22) penetrates the inner wall of the reaction device (1), and the penetrating end is communicated with a middle connecting block (24), the upper end of the middle connecting block (24) is provided with a feeding port (25), and one end of the middle connecting block (24) away from the mounting disc (21) is provided with a guide block; The two side walls of the guide block are provided with movable grooves (26), the inner walls of the two groups of movable grooves (26) are slidably connected with first and second sealing bodies (27) and (28), one end of the first sealing body (27) is fixedly connected with a first side connecting block (29), one end of the second sealing body (28) is fixedly connected with a second side connecting block (210), and the ends of the first and second side connecting blocks (29) and (210) away from each other are fixedly connected with elastic elements (211).

2. A pure olefin feed structure for alkyl benzene production as claimed in claim 1, wherein: The end of the elastic element (211) away from the first and second side connecting blocks (29) and (210) is fixedly connected with the inner wall of the guide block.

3. A pure olefin feed structure for alkyl benzene production as claimed in claim 1, wherein: The first sealing body (27), the first side connecting block (29), the second sealing body (28) and the second side connecting block (210) are symmetrically distributed about the center of the guide block.

4. A pure olefin feed structure for alkyl benzene production as claimed in claim 1, wherein: When the elastic element (211) is in a relaxed state, the first and second side connecting blocks (29) and (210) and the first and second sealing bodies (27) and (28) are in close contact with each other.

5. A pure olefin feed structure for alkyl benzene production as claimed in claim 4, wherein: The first and second sealing bodies (27) and (28) are members made of rubber material.

6. A pure olefin feed structure for alkyl benzene production as claimed in claim 5, wherein: One end of the pressing rod body (23) is fixedly connected with a piston body (212), the end of the piston body (212) away from the pressing rod body (23) is fixedly connected with a return spring (213) and a separation rod (214), the end of the return spring (213) away from the piston body (212) is fixedly connected with the middle connecting block (24), and one end of the separation rod (214) penetrates the middle connecting block (24), and the penetrating end thereof is lapped on one side of the first and second sealing bodies (27) and (28).

7. A pure olefin feed structure for alkyl benzene production as claimed in claim 6, wherein: The inner walls of the piston body (212) and the middle connecting block (24) are slidably connected.

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