Product collecting device of loop reactor

Abstract

The utility model discloses a product collecting device of a loop reactor. The product collecting device comprises a feeding line, a primary separation part and a secondary separation part, the primary separation part comprises a product tank and a gas phase outgoing line; the secondary separation part comprises a gas-liquid separator, a gas phase inlet line and an emptying line; the feeding line is sequentially connected with a feeding hole of the product tank and a feeding hole of the gas-liquid separator; a raw material separation outlet of the product tank is connected with an inlet of a gas-phase outgoing line, and the gas-phase outgoing line is connected with a feeding line and a gas-phase incoming line; an outlet of the gas phase inlet line is connected with a gas phase inlet of the gas-liquid separator, and a gas phase outlet of the gas-liquid separator is connected with the emptying line. Twice separation is performed through the primary separation part and the secondary separation part, so that the purity of a finished product material is improved, the light component separation effect can be improved, and the safety risk of the whole process can be reduced through an emptying line; and products with different distillation ranges can be obtained according to requirements, so that the diversification of the process is realized, and the cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of product collection and relates to a product collection device for a loop tube reactor. Background Art

[0002] Mesophase asphalt and general-purpose asphalt, as precursors of carbon materials, have a high softening point. Their products are easily blocked at the discharge port and easily oxidized by air during the process of discharging and collecting. At the same time, in the production process of intermediate asphalt and general-purpose asphalt, due to the presence of some combustible gas and light components in the high-temperature finished materials, the methods for subsequent treatment of the combustible gas and light components generated in the asphalt production process are mainly the following:

[0003] The combustion method is used to treat the combustible gas and light components, which are introduced into the combustion device for combustion and converted into harmless substances such as carbon dioxide and water. The accumulation of combustible gas and light components is effectively reduced, and the risk of explosion is reduced. During the combustion process, it is necessary to pay attention to the possibility of generating some trace harmful substances, such as nitrogen oxides, sulfur oxides, and other waste gases that are difficult to ensure meet environmental protection requirements.

[0004] Recovery method: For some valuable combustible gases and light components, they are recycled through recovery devices. For example, the combustible gases and light components are separated from the waste gas by using facilities such as adsorbents and condensers, and used as raw materials or fuels. The recovery methods include condensation recovery method, adsorption recovery method, membrane separation recovery method, and absorption recovery method; condensers, adsorption devices, membrane separation devices, and absorption towers are required respectively. Among them, the condensation recovery method requires a large amount of cooling energy, resulting in high energy consumption. The adsorption capacity of the adsorbent in the adsorption recovery method is limited, it is easy to saturate, and needs to be replaced or regenerated regularly. Although the membrane separation recovery method has the advantages of high separation efficiency and low energy consumption, there are still certain limitations on the types and properties of membrane materials. Different membrane materials have different separation effects on combustible gases and light components, and the membrane materials are easily contaminated and blocked, and need to be cleaned and replaced regularly. The absorption recovery method uses the absorption effect of liquid solvents on combustible gases and light components for recovery. However, the selection and regeneration process of the absorbent is relatively complicated and expensive. In addition, the absorbent can be interfered and affected by other components in the waste gas, resulting in poor recovery effect.

[0005] In summary, the above method has the technical problem of poor separation effect in solving the problem of separation of high-temperature gas phase and product.

[0006] In order to solve these technical problems, the utility model provides a product collecting device for a loop tube reactor. Utility Model Content

[0007] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the utility model is to provide a product collection device for a loop tube reactor, which can improve the purity of the finished material by performing two separations in the primary separation part and the secondary separation part, can improve the separation effect of the light component, and can also reduce the overall process safety risk through the venting line; it can also obtain products of different distillation ranges as required, realize process diversification, and reduce costs; by adding electric heating on the outlet line and discharging under a nitrogen atmosphere, the problems of the product being easily blocked at the discharge port and being easily oxidized by air are respectively solved.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] The utility model provides a product collection device for a loop tube reactor, comprising a feed line, a primary separation part and a secondary separation part;

[0010] The preliminary separation part includes a product tank and a gas phase outlet line;

[0011] The secondary separation part includes a gas-liquid separator, a gas phase inlet line and a vent line;

[0012] The feed line is connected to the feed port of the product tank and the feed port of the gas-liquid separator in sequence;

[0013] The raw material separation outlet of the product tank is connected to the inlet of the gas phase outlet line, and the gas phase outlet line is connected to the feed line and the gas phase inlet line;

[0014] The outlet of the gas phase inlet line is connected to the gas phase inlet of the gas-liquid separator, and the gas phase outlet of the gas-liquid separator is connected to the vent line.

[0015] In a specific implementation process, the feed inlet of the gas-liquid separator, the gas phase inlet of the gas-liquid separator and the gas phase outlet of the gas-liquid separator are arranged at the top of the gas-liquid separator.

[0016] In the specific implementation process, it also includes a product line and a liquid phase outlet line; the product line is connected to the bottom outlet of the product tank, and the liquid phase outlet line is connected to the liquid phase outlet of the gas-liquid separator.

[0017] In the specific implementation process, electric heating components are arranged on the external pipelines of the product line, feed line, vent line, gas phase outlet line, gas phase inlet line and liquid phase outlet line.

[0018] In a specific implementation process, the liquid phase outlet of the gas-liquid separator is arranged at the bottom of the gas-liquid separator.

[0019] In a specific implementation process, the product tank includes a first product tank and a second product tank which are arranged in sequence;

[0020] The feed inlets of the first product tank and the second product tank are connected to the feed line; the raw material separation outlets of the first product tank and the second product tank are connected to the gas phase outlet line; and the interiors of the first product tank and the second product tank are filled with nitrogen.

[0021] In a specific implementation process, the bottom outlets of the first product tank and the second product tank are connected to product lines.

[0022] In a specific implementation process, the raw material separation outlets of the first product tank and the second product tank and the feed inlets of the first product tank and the second product tank are arranged at the top ends of the first product tank and the second product tank.

[0023] In the specific implementation process, the gas phase outlet line includes a gas phase outlet main line, a first branch line, a second branch line, a third branch line and a fourth branch line;

[0024] The gas phase outlet main line is connected to the first branch, the second branch, the third branch and one end of the fourth branch in sequence;

[0025] The other end of the first branch is connected to the raw material separation outlet of the first product tank;

[0026] The other end of the second branch is connected to the feed line and then connected to the feed port of the second product tank;

[0027] The other end of the third branch is connected to the raw material separation outlet of the second product tank;

[0028] The other end of the fourth branch is connected to the feed line and then connected to the feed port of the gas-liquid separator.

[0029] In a specific implementation process, the outlet of the gas phase outlet main line is connected to the inlet of the gas phase inlet line.

[0030] In a specific implementation process, valves are provided on the first branch, the second branch, the third branch, the fourth branch and the gas phase inlet line.

[0031] Compared with the prior art, the utility model has the following beneficial effects:

[0032] The utility model provides a product collection device for an annular tube reactor, and the above-mentioned recovery method mainly includes a preliminary separation part and a secondary separation part. The preliminary separation part can realize buffer storage and light component separation, initially achieve separation effect, improve the purity of finished materials, and increase the yield and comprehensive index of finished products; the high-temperature gas phase in the secondary separation part enters the gas-liquid separation tank, and the secondary separation of non-condensable gas further improves the light component separation effect, and reduces the overall process safety risk through the venting line, and improves the stability of the finished product process recovery process; the above-mentioned product collection device can obtain products of different distillation ranges as required, and realize process diversification. The separation effect of the two separations performed by the preliminary separation part and the secondary separation part is good, and the energy consumption and cost of the gas-liquid separator and product tank (one open and one standby or two open) used are low.

[0033] Furthermore, the utility model sets electric heating components on the outer pipelines of the product line, feed line, vent line, gas phase outlet line, gas phase inlet line and liquid phase outlet line to solve the problem that the product is easily blocked at the outlet. In addition, the problem that the product is easily oxidized by air is solved by filling the first product tank and the second product tank with nitrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of a product collection device of a loop reactor in Example 1 of the utility model;

[0035] Figure 2 It is a schematic diagram of a product collecting device of a loop reactor of Example 2 of the utility model;

[0036] Among them: 1-first product tank; 2-second product tank; 3-gas-liquid separator; 4-product line; 5-feed line; 6-vent line; 7-gas phase outlet line; 8-gas phase inlet line; 9-liquid phase outlet line. DETAILED DESCRIPTION

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

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] The utility model is further described in detail below with reference to the accompanying drawings:

[0040] See also Figure 1 The utility model provides a product collecting device of a loop tube reactor, the device mainly comprises a primary separation part and a secondary separation part; the primary separation part comprises a product tank and a gas phase outlet line 7; the secondary separation part comprises a gas-liquid separator 3, a gas phase inlet line 8 and a venting line 6; wherein, the raw material separation outlet of the product tank is connected to the inlet of the gas phase outlet line 7, the device further comprises a feed line 5, the feed port of the product tank and the feed port of the gas-liquid separator 3 are connected to the feed line 5 in sequence; the gas phase outlet line 7 is connected to the feed line 5 and the gas phase inlet line 8; the outlet of the gas phase inlet line 8 is connected to the gas phase inlet of the gas-liquid separator 3, and the gas phase outlet of the gas-liquid separator 3 is connected to the venting line 6. The above recovery method achieves the initial separation effect through one product tank open and one standby or two product tanks open, buffer storage and light component separation, improves the purity of the finished product, increases the yield and comprehensive index of the finished product, and the high-temperature gas phase enters the gas-liquid separator 3 after entering the vent line 6, and the non-condensable gas is separated for the second time, which further improves the light component separation effect, reduces the overall process safety risk, and improves the stability of the finished product process recovery process; products of different distillation ranges can be obtained as required, realizing process diversification.

[0041] It also includes a product line 4 and a liquid phase outlet line 9; wherein the product line 4 is connected to the bottom outlet of the product tank, and the liquid phase outlet line 9 is connected to the liquid phase outlet of the gas-liquid separator 3. Electric heating components are arranged on the outer pipelines of the product line 4, the feed line 5, the vent line 6, the gas phase outlet line 7, the gas phase feed line 8 and the liquid phase outlet line 9. Preferably, the electric heating component includes an electric heating belt or an electric heating wire. The temperature is increased by the electric heating component so that the product is not easily blocked at the outlet.

[0042] The vent line 6 keeps the air pressure inside the sampler consistent with that outside to ensure the stability of the gas.

[0043] The liquid phase outlet of the gas-liquid separator 3 is connected to a liquid phase outlet line 9, and the liquid phase outlet of the gas-liquid separator 3 is arranged at the bottom of the gas-liquid separator 3. The feed port of the gas-liquid separator 3, the gas phase inlet of the gas-liquid separator 3 and the gas phase outlet of the gas-liquid separator 3 are arranged at the top of the gas-liquid separator 3.

[0044] The above-mentioned product tank includes a first product tank 1 and a second product tank 2 which are arranged in sequence; the feed ports of the first product tank 1 and the second product tank 2 are connected to a feed line 5; the raw material separation outlets of the first product tank 1 and the second product tank 2 are connected to a gas phase outlet 7, and the bottom outlets of the first product tank 1 and the second product tank 2 are connected to a product line 4; the interiors of the first product tank and the second product tank are both filled with nitrogen.

[0045] Among them, the raw material separation outlets of the first product tank 1 and the second product tank 2 and the feed inlets of the first product tank 1 and the second product tank 2 are arranged at the top ends of the first product tank 1 and the second product tank 2 .

[0046] More specifically, the gas phase outlet line 7 includes a gas phase outlet main line, a first branch, a second branch, a third branch and a fourth branch; the gas phase outlet main line is connected to the first branch, the second branch, the third branch and one end of the fourth branch in sequence; the other end of the first branch is connected to the raw material separation outlet of the first product tank 1; the other end of the second branch is connected to the feed line 5 and then to the feed port of the second product tank 2; the other end of the third branch is connected to the raw material separation outlet of the second product tank 2; the other end of the fourth branch is connected to the feed line 5 and then to the feed port of the gas-liquid separator 3; the outlet of the gas phase outlet main line is connected to the inlet of the gas phase inlet line 8.

[0047] Furthermore, valves are provided on the first branch, the second branch, the third branch, the fourth branch and the gas phase inlet line 8.

[0048] For the product collection device of the loop reactor, the utility model provides the following two usage modes:

[0049] Method 1: The gas phase and product mixture enter the first product tank 1 and the second product tank 2 through the feed line 5, and the product and gas phase separation effect is initially achieved. The product after preliminary separation is collected in the product tank and discharged through the product line. The gas phase after preliminary separation enters the gas-liquid separator 3 through the gas phase outlet line 7 and the gas phase inlet line 8, and the oil phase and non-condensable gas are further separated. The non-condensable gas enters the vent line 6, and the oil phase is cooled in the gas-liquid separator 3 and discharged through the liquid phase outlet line 9.

[0050] Method 2: The gas phase and the product mixture enter the first product tank 1 through the feed line 5, and the separation of the 1# product is initially realized; the mixture after the initial separation enters the second product tank 2 through the first branch of the gas phase outlet line 7 at the top of the first product tank 1, the gas phase outlet line main line, the second branch and the feed line 5, and then the separation of the 2# product is realized; the mixture after the separation again enters the gas-liquid separator 3 through the third branch of the gas phase outlet line 7, the gas phase outlet line main line, the fourth branch, the feed line 5 and the gas phase inlet line 8, and the oil phase and the non-condensable gas are further separated, and the non-condensable gas enters the vent line 6, and the oil phase is cooled in the gas-liquid separator 3. Finally, according to different requirements, the 1# product, the 2# product and the tail oil with different distillation ranges can be obtained.

[0051] Example 1

[0052] like Figure 1 As shown, this embodiment provides a product collection device for a loop reactor, including a first product tank 1, a second product tank 2, a gas-liquid separator 3, a feed line 5, a vent line 6, a gas phase outlet line 7, a gas phase inlet line 8, and a liquid phase outlet line 9.

[0053] The first product tank 1, the second product tank 2 and the gas-liquid separator 3 are all provided with liquid level gauges and connected to the DCS system to achieve pressure control and temperature control.

[0054] The feed inlet at the top of the first product tank 1 is connected to the feed line 5 , the raw material separation outlet is connected to the gas phase outlet line 7 , and the bottom outlet at the bottom is connected to the product line 4 .

[0055] The feed inlet at the top of the second product tank 2 is connected to the feed line 5 , the raw material separation outlet is connected to the gas phase outlet line 7 , and the bottom outlet at the bottom is connected to the product line 4 .

[0056] The gas phase inlet, feed port and gas phase outlet at the top of the gas-liquid separator 3 are connected to the gas phase inlet line 8, feed line 5 and vent line 6 respectively, and the liquid phase outlet at the bottom is connected to the liquid phase outlet line 9.

[0057] Among them, the gas phase outlet line 7 is connected to the feed line 5 and the gas phase inlet line 8; the specific gas phase outlet line 7 includes a gas phase outlet main line, a first branch, a second branch, a third branch and a fourth branch; one end of the first branch is connected to the raw material separation outlet of the first product tank 1, and the other end is connected to the gas phase outlet main line; one end of the second branch is connected to the gas phase outlet main line, and the other end is connected to the feed line 5 and then connected to the feed port of the second product tank 2; one end of the third branch is connected to the raw material separation outlet of the second product tank 2, and the other end is connected to the gas phase outlet main line; one end of the fourth branch is connected to the gas phase outlet main line, and the other end is connected to the feed line 5 and then connected to the feed port of the gas-liquid separator 3; the outlet of the gas phase outlet main line is connected to the inlet of the gas phase inlet line 8.

[0058] Example 2

[0059] like Figure 2 As shown, based on the product collecting device of the annular tube reactor of the above-mentioned embodiment 1, further improvements are made, and a group of valves are added to the connecting pipes of the feed line 5 and the first product tank 1, the second product tank 2 and the feed port of the gas-liquid separator 3, and a group of valves are added at the inlet of the feed line 5; a group of valves are added to the connecting pipes of the gas phase outlet line 7 and the first product tank 1, the second product tank 2 and the gas phase inlet line 8.

[0060] A set of valves is arranged on the product line 4 near the bottom outlets of the first product tank 1 and the second product tank 2 , and another set of valves is arranged near the outlet of the product line 4 .

[0061] A group of valves is arranged on the liquid phase outlet line 9 close to the liquid phase outlet of the gas-liquid separator 3 , and another group of valves is arranged near the outlet of the liquid phase outlet line 9 .

[0062] Two groups of valves are respectively provided on the vent line 6 , one group is arranged close to the gas phase outlet of the gas-liquid separator 3 , and the other group is arranged close to the outlet of the vent line 6 .

[0063] Example 3

[0064] like Figure 1 As shown, based on the product collection device of the loop reactor in the above-mentioned embodiment 1, further improvements are made, and electric heating components are arranged on the outer pipelines of the product line 4, the feed line 5, the vent line 6, the gas phase outlet line 7, the gas phase feed line 8 and the liquid phase outlet line 9. The electric heating component can be selected from electric heating belts or electric heating wires. The temperature is increased by the electric heating component so that the product is not easily blocked at the outlet.

[0065] The interior of the first product tank 1 and the second product tank 2 are both filled with nitrogen to prevent the products from being easily oxidized by air during the process of discharging and collecting products. The product collection device of the above-mentioned annular tube reactor achieves the initial separation effect by opening one product tank and keeping one in reserve or opening two product tanks, buffering storage and light component separation, improving the purity of the finished product, increasing the yield and comprehensive index of the finished product, and the high-temperature gas phase enters the gas-liquid separator 3 after entering the vent line 6, and the non-condensable gas is separated for the second time, further improving the light component separation effect, reducing the overall process safety risk, and improving the stability of the finished product process collection process; products of different distillation ranges can be obtained according to requirements to achieve process diversification.

[0066] The above content is only for explaining the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the utility model shall fall within the protection scope of the claims of the utility model.

Claims

1. A product collection device for a loop reactor, characterized in that: It includes a feed line (5), a primary separation section and a secondary separation section; The preliminary separation part includes a product tank and a gas phase outlet line (7); The secondary separation part comprises a gas-liquid separator (3), a gas phase inlet line (8) and a vent line (6); The feed line (5) is connected in sequence to the feed port of the product tank and the feed port of the gas-liquid separator (3); The raw material separation outlet of the product tank is connected to the inlet of the gas phase outlet line (7), and the gas phase outlet line (7) is connected to the feed line (5) and the gas phase inlet line (8); The outlet of the gas phase inlet line (8) is connected to the gas phase inlet of the gas-liquid separator (3), and the gas phase outlet of the gas-liquid separator (3) is connected to the vent line (6).

2. The product collection device of the loop reactor according to claim 1, characterized in that: The feed inlet of the gas-liquid separator (3), the gas phase inlet of the gas-liquid separator (3) and the gas phase outlet of the gas-liquid separator (3) are arranged at the top of the gas-liquid separator (3).

3. The product collecting device of the loop reactor according to claim 1, characterized in that: It also includes a product line (4) and a liquid phase outlet line (9); the product line (4) is connected to the bottom outlet of the product tank, and the liquid phase outlet line (9) is connected to the liquid phase outlet of the gas-liquid separator (3).

4. The product collection device of the loop reactor according to claim 3, characterized in that: Electric heating components are arranged on the outer pipelines of the product line (4), the feed line (5), the vent line (6), the gas phase outlet line (7), the gas phase inlet line (8) and the liquid phase outlet line (9).

5. The product collection device of the loop reactor according to claim 1, characterized in that: The product tank comprises a first product tank (1) and a second product tank (2) which are arranged in sequence.

6. The product collection device of the loop reactor according to claim 5, characterized in that: The feed inlets of the first product tank (1) and the second product tank (2) are connected to a feed line (5); the raw material separation outlets of the first product tank (1) and the second product tank (2) are connected to a gas phase outlet line (7); and the interiors of the first product tank (1) and the second product tank (2) are filled with nitrogen.

7. The product collection device of the loop reactor according to claim 5, characterized in that: The gas phase outlet line (7) comprises a gas phase outlet main line, a first branch line, a second branch line, a third branch line and a fourth branch line; The gas phase outlet main line is connected to the first branch, the second branch, the third branch and one end of the fourth branch in sequence; The other end of the first branch is connected to the raw material separation outlet of the first product tank (1); The other end of the second branch is connected to the feed line (5) and then connected to the feed port of the second product tank (2); The other end of the third branch is connected to the raw material separation outlet of the second product tank (2); The other end of the fourth branch is connected to the feed line (5) and then connected to the feed port of the gas-liquid separator (3).

8. The product collection device of the loop reactor according to claim 7, characterized in that: The outlet of the gas phase outlet main pipeline is connected to the inlet of the gas phase inlet line (8).

9. The product collection device of the loop reactor according to claim 7, characterized in that: Valves are provided on the first branch, the second branch, the third branch, the fourth branch and the gas phase inlet line (8).

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