Yellowing initial temperature control device

Abstract

The utility model discloses a yellowing initial temperature control device, and relates to the technical field of viscose fiber production. The device comprises a preparation tank and a cooling tank, a plate heat exchanger is arranged on the right side of the cooling tank, a yellowing tank is arranged right in front of the cooling tank, the interior of the cooling tank and the interior of the preparation tank are divided into two spaces through partition plates fixed to the upper face and the lower face, and a solution pipe and a saline water pipe which are communicated with the same space in the preparation tank are fixed to the upper end face of the preparation tank. And four pump bodies which are respectively communicated with the interior of each space are fixed outside the cooling tank and the preparation tank. According to the utility model, the configuration tank, the cooling tank and the plate heat exchanger are circularly matched to work, so that after the alkali cellulose uniformly absorbs a low-temperature sodium hydroxide solution, the temperature can just reach the initial temperature of the yellowing process, and the overall temperature of the alkali cellulose is more uniform and consistent; meanwhile, the alkali cellulose is swelled and enlarged after being added into the sodium hydroxide solution, and the surface area is enlarged.

Description

Technical Field

[0001] The utility model belongs to the technical field of viscose fiber production, in particular to a yellowing initial temperature control device. Background Art

[0002] The yellowing process is one of the important links in the production of regenerated cellulose fiber glue, and the control of the initial yellowing temperature is one of the important links in the yellowing process. The accuracy and uniformity of the initial yellowing temperature control are crucial to the quality of yellowing. The length of time from the original temperature of alkali cellulose, one of the raw materials in the yellowing process, to the initial temperature required for the yellowing process directly affects the yellowing cycle, and also has a great impact on the production efficiency of the yellowing mechanism glue.

[0003] Traditionally, the temperature of the xantholytic machine wall is reduced by passing cold alkaline water through the jacket of the xantholytic machine to reduce the temperature of the xantholytic machine wall, and then the temperature of the alkali cellulose put into the xantholytic machine is reduced to the required initial temperature of xantholytic process through the xantholytic machine wall. This process takes a long time, generally more than an hour, which seriously affects the xantholytic cycle. In addition, the internal temperature of the alkali cellulose is not uniform when the temperature is reduced by the jacket of the xantholytic machine, which will seriously affect the internal quality of the xantholytic glue. The alkali cellulose with high temperature reacts quickly, while the alkali cellulose with low temperature reacts slowly. The yellowing is uneven, and the quality of the viscose is difficult to improve. To this end, we provide a xantholytic initial temperature control device to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a yellowing initial temperature control device, which can stabilize the temperature of the sodium hydroxide solution at 4±1°C by configuring a tank, a cooling tank and a plate heat exchanger to work in a cycle, and spray a large amount of 120g / L 4°C sodium hydroxide solution into the yellowing tank. After the alkali cellulose uniformly absorbs the low-temperature sodium hydroxide solution, the temperature can just reach the initial temperature of the yellowing process, and the overall temperature of the alkali cellulose is more uniform. At the same time, the alkali cellulose will swell and become larger after adding the sodium hydroxide solution, and the surface area will become larger.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a yellowing initial temperature control device, comprising a configuration tank and a cooling tank; a plate heat exchanger is arranged on the right side of the cooling tank, a yellowing tank is arranged directly in front of the cooling tank, the interiors of the cooling tank and the configuration tank are arranged as two spaces through partitions fixed on the upper and lower sides, a solution pipe and a brine pipe connected to the same space inside the configuration tank are fixed on the upper end face of the configuration tank, and four pump bodies respectively connected to the interior of each space are fixed on the outside of the cooling tank and the configuration tank.

[0007] The utility model is further configured that a sedimentation pipe is fixed at the pump body port position in the same space inside the solution pipe, and the sedimentation pipe is connected with the inside of another space of the configuration tank.

[0008] The utility model is further configured that a pumping tube is fixed at the position of another pump body port connected to the configuration tank, and the other end of the pumping tube is connected to the internal space of the cooling tank.

[0009] The utility model is further configured such that a refrigeration pipe is fixed at a pump body port position where the pumping pipe is located in the same internal space of the cooling tank, and the other end of the refrigeration pipe is connected to the inlet end of the plate heat exchanger.

[0010] The utility model is further configured that a circulation pipe is fixed to the outlet end of the plate heat exchanger, and the other end of the circulation pipe is connected to the inside of another space of the cooling tank.

[0011] The utility model is further configured such that a nozzle is fixed at the pump body position of the circulation pipe in the same internal space of the cooling tank, and the other end of the nozzle is connected to the refrigerant liquid port of the yellowing tank.

[0012] The utility model is further configured that a jacket is provided on the surface side of the xantholytic tank, and a feed pipe connected with the interior of the xantholytic tank is provided at a position outside the jacket.

[0013] The utility model has the following beneficial effects: the utility model configures the tank, the cooling tank and the plate heat exchanger to work in a cycle, so as to stabilize the temperature of the sodium hydroxide solution at 4±1°C, and sprays a large amount of 120g / L of 4°C sodium hydroxide solution into the yellowing tank, and after the alkali cellulose uniformly absorbs the low-temperature sodium hydroxide solution, the temperature can just reach the initial temperature of the yellowing process, and the overall temperature of the alkali cellulose is more uniform, and at the same time, the alkali cellulose will swell and become larger after the sodium hydroxide solution is added, and the surface area will become larger. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are 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 creative work.

[0015] Figure 1 It is a structural schematic diagram of a yellowing initial temperature control device.

[0016] Figure 2 This is a structural combination diagram of the configuration tank, cooling tank and plate heat exchanger in the utility model.

[0017] Figure 3This is a diagram of the internal structure of the configuration tank and the cooling tank in the utility model.

[0018] Figure 4 This is the flow chart of the initial temperature control of yellowing in the utility model.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1- configuration tank, 101- solution pipe, 102- brine pipe, 2- cooling tank, 3- plate heat exchanger, 4- yellowing tank, 401- jacket, 402- feed pipe, 5- spray pipe, 6- sedimentation pipe, 7- pumping pipe, 8- circulation pipe, 9- refrigeration pipe, 10- pump body, 11- partition. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0022] See also Figures 1 to 4 The utility model is a yellowing initial temperature control device, which stabilizes the temperature of the sodium hydroxide solution at 4±1°C by configuring the circulation cooperation of the tank 1, the cooling tank 2 and the plate heat exchanger 3, and sprays a large amount of 120g / L 4°C sodium hydroxide solution into the yellowing tank 4. After the alkali cellulose uniformly absorbs the low-temperature sodium hydroxide solution, the temperature can just reach the initial temperature of the yellowing process, and the overall temperature of the alkali cellulose is more uniform. At the same time, the alkali cellulose will swell and become larger after adding the sodium hydroxide solution, and the surface area will become larger.

[0023] Specifically, a configuration tank 1 and a cooling tank 2; a plate heat exchanger 3 is arranged on the right side of the cooling tank 2, and a yellowing tank 4 is arranged directly in front of the cooling tank 2. The interiors of the cooling tank 2 and the configuration tank 1 are set as two spaces through a partition 11 fixed on the upper and lower sides. A solution pipe 101 and a brine pipe 102 connected to the same space inside the configuration tank 1 are fixed on the upper end face of the configuration tank 1. Four pump bodies 10 connected to the interior of each space are fixed to the outside of the cooling tank 2 and the configuration tank 1. A sedimentation pipe 6 is fixed to the port position of the pump body 10 in the same space inside the solution pipe 101, and the sedimentation pipe 6 is connected to the interior of another space of the configuration tank 1. A pumping tube 7 is fixed at the port position of another pump body 10 connected to the configuration tank 1, and the other end of the pumping tube 7 is connected to the internal space of the cooling tank 2, and a refrigeration tube 9 is fixed at the port position of the pump body 10 where the pumping tube 7 is located in the same internal space of the cooling tank 2, and the other end of the refrigeration tube 9 is connected to the inlet end of the plate heat exchanger 3, and a circulation tube 8 is fixed at the outlet end of the plate heat exchanger 3, and the other end of the circulation tube 8 is connected to the inside of another space of the cooling tank 2, and a nozzle 5 is fixed at the position of the pump body 10 where the circulation tube 8 is located in the same internal space of the cooling tank 2, and the other end of the nozzle 5 is connected to the refrigerant liquid port of the yellowing tank 4.

[0024] The operation process of this embodiment is as follows: by using the above-mentioned structure, 430g / L sodium hydroxide solution and desalted water are added to a separate space in the configuration tank 1 through the solution pipe 101 and the brine pipe 102 for mixing to prepare a 120g / L sodium hydroxide solution. Because the dilution of concentrated alkali is an exothermic reaction, a large amount of heat will be released, so that the temperature of the diluted sodium hydroxide solution will rise to 40-50°C. At the same time, the configured concentrated alkali is pumped to another space in the configuration tank 1 through the pump body 10 for precipitation, and the high-temperature concentrated alkali is pumped to the cooling tank 2 through the cooperation of the pump body 10 and the pumping pipe 7, and the concentrated alkali is sent to the plate heat exchanger 3 through the pump body 10 and the refrigeration pipe 9, so that the concentrated alkali is cooled through heat exchange treatment and circulated to the cooling tank 2. In another space of the yellowing tank 4, the pump body 10 and the nozzle 5 are used in cooperation to spray the cooled concentrated alkali into the yellowing tank 4, so the concentrated alkali circulates through the plate heat exchanger 3, thereby stabilizing the temperature of the sodium hydroxide solution at 4±1°C, and during the time period when the alkali cellulose is put into the yellowing tank 4 in the yellowing process, the stirrer inside the yellowing tank 4 is turned on, and a large amount of 120g / L 4°C sodium hydroxide solution is sprayed into the yellowing tank 4 at the same time, and the low-temperature sodium hydroxide solution is evenly added to the solid alkali cellulose in the yellowing tank 4. After the alkali cellulose evenly absorbs the low-temperature sodium hydroxide solution, the temperature can just reach the initial temperature of the yellowing process, and the overall temperature of the alkali cellulose is more uniform. At the same time, the alkali cellulose will swell and become larger after adding the sodium hydroxide solution, and the surface area will become larger. Example 2

[0025] See also Figure 1 On the basis of Example 1, by using the jacket 401, the cooling effect of the alkali cellulose inside the yellowing tank 4 can be improved.

[0026] Specifically, a jacket 401 is provided on the surface of the xantholytic tank 4 , and a feed pipe 402 connected to the inside of the xantholytic tank 4 is provided outside the jacket 401 .

[0027] The operation process of this embodiment is: by pouring the cooling liquid from the cooling inlet of the jacket 401 and flowing it out from the cooling outlet, the cooling efficiency of the alkali cellulose inside the xanthating tank 4 can be enhanced, and the alkali cellulose can be poured into the xanthating tank 4 through the feed pipe 402.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A yellowing initial temperature control device, comprising a configuration tank (1) and a cooling tank (2); characterized in that: A plate heat exchanger (3) is arranged on the right side of the cooling tank (2), and a yellowing tank (4) is arranged directly in front of the cooling tank (2). The interiors of the cooling tank (2) and the configuration tank (1) are configured as two spaces via a partition (11) fixed at the upper and lower sides. A solution pipe (101) and a brine pipe (102) connected to the same space inside the configuration tank (1) are fixed to the upper end surface of the configuration tank (1), and four pump bodies (10) connected to the interior of each space are fixed to the outside of the cooling tank (2) and the configuration tank (1).

2. The yellowing initial temperature control device according to claim 1, characterized in that: A sedimentation pipe (6) is fixed at the port position of the pump body (10) which is in the same space as the interior of the solution pipe (101), and the sedimentation pipe (6) is connected to the interior of another space of the configuration tank (1).

3. The yellowing initial temperature control device according to claim 2, characterized in that: A pumping tube (7) is fixed at the port position of another pump body (10) connected to the configuration tank (1), and the other end of the pumping tube (7) is connected to the internal space of the cooling tank (2).

4. The yellowing initial temperature control device according to claim 3, characterized in that: A refrigeration pipe (9) is fixed to the port position of the pump body (10) which is located in the same internal space of the cooling tank (2) as the pumping pipe (7), and the other end of the refrigeration pipe (9) is connected to the inlet end of the plate heat exchanger (3).

5. The yellowing initial temperature control device according to claim 4, characterized in that: A circulation pipe (8) is fixed to the outlet end of the plate heat exchanger (3), and the other end of the circulation pipe (8) is connected to the inside of another space of the cooling tank (2).

6. The yellowing initial temperature control device according to claim 5, characterized in that: A nozzle (5) is fixed to the pump body (10) in the same internal space of the cooling tank (2) as the circulation pipe (8), and the other end of the nozzle (5) is connected to the refrigerant liquid port of the yellowing tank (4).

7. The yellowing initial temperature control device according to claim 1, characterized in that: The surface of the xanthating tank (4) is provided with a jacket (401), and a feed pipe (402) connected to the interior of the xanthating tank (4) is provided outside the jacket (401).

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