Alkalization and etherification controllable adjusting system for cellulose production

Abstract

The utility model discloses a cellulose production alkalization etherification controllable adjusting system which comprises a multifunctional pool (6), the multifunctional pool (6) is respectively connected with an alkali liquor mixing pool (8) and an acid liquor temporary storage pool (9) through a second alkali liquor pump (11) and a first acid liquor pump (12), an inlet of the multifunctional pool (6) is connected with an outlet of an alkalization pool (5), and an outlet of the multifunctional pool (6) is connected with an inlet of an etherification pool (7). According to the characteristics of different raw materials, the effect of adjusting the production efficiency is achieved through function conversion of the multifunctional pool (6). The device solves the problems that the existing process is not suitable for production of raw materials with special sources, the product quality cannot be known in real time, and the production progress cannot be adjusted in time.

Description

Technical Field

[0001] The utility model relates to the technical field of cellulose production, in particular to a controllable regulation system for alkalization and etherification in cellulose production. Background Art

[0002] Cellulose derivatives are the products obtained by the esterification, etherification and other chemical reactions of the hydroxyl groups in natural cellulose molecules with chemical reagents. Cellulose is the most abundant natural polymer on the earth, the most widely distributed and most abundant polysaccharide in nature, and an important structural component of the primary cell walls of green plants, algae and oomycetes.

[0003] Carboxymethyl cellulose (CMC) can be obtained by the alkalization and etherification reaction of lignocellulose. Although the industrial production of CMC has made great development, it is still insufficient to meet the rapid development needs of industrial fields such as oil fields, coatings, chemical engineering, medicine, construction, and food. At the same time, due to the high-quality cellulose raw materials being cotton and wood pulp, the cost has been high. CN107903327A provides a method for separating straw cellulose components and preparing carboxymethyl cellulose. Although waste raw materials are also used, the cost is still relatively high, and no description of large-scale controllable production process is given. Therefore, using the feces of herbivores containing a large amount of plant fibers as alternative raw materials for production and developing a supporting production and treatment process system are also the key development directions of cellulose-related enterprises. Summary of the Utility Model

[0004] The utility model provides a controllable regulation system for alkalization and etherification in cellulose production, which solves the problems that the existing process is not suitable for the production of raw materials from special sources, and it is impossible to know the product quality in real time and adjust the production progress in time.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A controllable regulation system for alkalization and etherification of cellulose production, including a multi-functional pool. The multi-functional pool is respectively connected to an alkali solution mixing pool and an acid solution temporary storage pool through a second alkali solution pump and a first acid solution pump. The inlet of the multi-functional pool is connected to the outlet of the alkalization pool, and the outlet of the multi-functional pool is connected to the inlet of the etherification pool. In this preferred solution, according to the production progress and raw material sources, the functions undertaken by the multi-functional pool are different. During the raw material processing, due to the characteristics of the cellulose raw materials themselves, the alkalization treatment takes longer than the etherification treatment. Therefore, a balance needs to be achieved between the processing speed and the container occupancy: the reaction container takes a certain time to complete the processing, but it cannot occupy the container for a long time, resulting in the inability of the raw materials in the previous step to enter, and the lack of raw materials in the next step to proceed. When the raw materials are relatively fine, the overall alkalization time is shorter. The fast primary alkalized raw materials from the alkalization pool are first subjected to fast secondary alkalization treatment in the multi-functional pool, then fast primary etherification treatment, and then the materials subjected to fast primary etherification treatment are transported to the etherification pool for fast secondary etherification treatment. When the raw materials are relatively rough, the overall alkalization time is longer. The slow primary alkalized raw materials from the alkalization pool are subjected to slow secondary alkalization treatment in the multi-functional pool, and then the alkalized materials are transported to the etherification pool. According to the characteristics of different raw materials, through the function conversion of the multi-functional pool, the effect of adjusting the production efficiency is achieved.

[0007] Further, the soaking pool is provided with a raw material inlet and a waste residue outlet, and the soaking pool is bidirectionally connected to the cooking pool. In this preferred solution, on the one hand, the soaking pool receives raw materials, and on the other hand, it receives hot water from the cooking pool. By fully soaking the fecal raw materials, the feces absorb water and soften into a paste or a thin paste. Through stirring and fishing, the plant-based raw materials rich in cellulose enter the cooking pool, and at the same time, the liquid containing substances such as gravel is discharged.

[0008] Further, the cooking pool is sequentially connected to an oven, a crusher, and an alkalization pool. In this preferred solution, the cooking pool cooks the plant-based raw materials rich in cellulose from the soaking pool, then the cooked cellulose is fished out and dried in the oven, and then crushed to a predetermined size by the crusher and transported to the alkalization pool.

[0009] Further, the alkalization pool is connected to the alkali solution mixing pool through a first alkali solution pump. In this preferred solution, the alkali solution mixing pool transports the alkali solution to the alkalization pool through the first alkali solution pump to preliminarily alkalize the raw materials from the crusher.

[0010] Further, the etherification pool is connected to the acid solution temporary storage pool through a second acid solution pump. In this preferred solution, the acid solution temporary storage pool transports the acid solution to the etherification pool through the second acid solution pump to etherify the materials from the multi-functional pool.

[0011] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0012] (1) The multi-functional tank (6) of the present utility model undertakes different functions according to the production progress and raw material sources. During the raw material treatment process, due to the inherent characteristics of cellulose raw materials, the alkalization treatment takes longer than the etherification treatment. Therefore, a balance needs to be achieved between the treatment speed and the container occupancy: the reaction container requires a certain amount of time to complete the treatment, but it cannot occupy the container for a long time, otherwise the raw materials from the previous step cannot enter, and the next step lacks raw materials and cannot proceed. When the raw materials are relatively fine, the overall alkalization time is shorter. The rapidly alkalized raw materials from the alkalization tank (5) are first subjected to rapid secondary alkalization treatment in the multi-functional tank (6), then rapid primary etherification treatment, and then the materials after the rapid primary etherification treatment are transported to the etherification tank (7) for rapid secondary etherification treatment. When the raw materials are relatively rough, the overall alkalization time is longer. The slowly alkalized raw materials from the alkalization tank (5) are subjected to slow secondary alkalization treatment in the multi-functional tank (6), and then the alkalized materials are transported to the etherification tank (7). According to the characteristics of different raw materials, the production efficiency is adjusted by the function conversion of the multi-functional tank (6).

[0013] (2) On the one hand, the soaking tank (1) of the present utility model receives raw materials, and on the other hand, it receives hot water from the cooking tank (2). By fully soaking the fecal raw materials, the feces absorb water and soften into a paste or a thin paste. Through stirring and scooping, the plant-based raw materials rich in cellulose enter the cooking tank (2), and at the same time, the liquid containing substances such as gravel is discharged.

[0014] (3) The cooking tank (2) of the present utility model cooks the plant-based raw materials rich in cellulose from the soaking tank (1), then scoops out the cooked cellulose and dries it in the oven (3), and then breaks it to a predetermined size by the crusher (4) and transports it to the alkalization tank (5).

[0015] (4) The alkali liquid mixing tank (8) of the present utility model transports the alkali liquid to the alkalization tank (5) through the first alkali liquid pump (10) to preliminarily alkalize the raw materials from the crusher (4). The acid liquid storage tank (9) transports the acid liquid to the etherification tank (7) through the second acid liquid pump (13) to etherify the materials from the multi-functional tank (6). Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the present utility model.

[0017] In the figure: 1. Soaking tank; 2. Cooking tank; 3. Oven; 4. Crusher; 5. Alkalization tank; 6. Multi-functional tank; 7. Etherification tank; 8. Alkali liquid mixing tank; 9. Acid liquid storage tank; 10. First alkali liquid pump; 11. Second alkali liquid pump; 12. First acid liquid pump; 13. Second acid liquid pump. Detailed Embodiment

[0018] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the technical solution of the present application will be described in detail below in conjunction with specific embodiments. It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0019] Referring to the attached Figure 1 As shown, the embodiment of the present utility model provides a controllable adjustment system for alkalization and etherification of cellulose production, including a multi-functional pool 6. The multi-functional pool 6 is respectively connected to an alkali solution mixing pool 8 and an acid solution temporary storage pool 9 through a second alkali solution pump 11 and a first acid solution pump 12. The inlet of the multi-functional pool 6 is connected to the outlet of an alkalization pool 5, and the outlet of the multi-functional pool 6 is connected to the inlet of an etherification pool 7. The soaking pool 1 is provided with a raw material inlet and a waste residue outlet, and the soaking pool 1 is bidirectionally connected to a cooking pool 2. The cooking pool 2 is sequentially connected to an oven 3, a crusher 4, and an alkalization pool 5. The alkalization pool 5 is connected to the alkali solution mixing pool 8 through a first alkali solution pump 10. The etherification pool 7 is connected to the acid solution temporary storage pool 9 through a second acid solution pump 13.

[0020] During use, the multi-functional pool 6 of the present utility model undertakes different functions according to the production progress and raw material sources. During the raw material treatment process, due to the inherent characteristics of the cellulose raw material, the alkalization treatment takes longer than the etherification treatment. Therefore, a balance needs to be achieved between the treatment speed and the container occupancy: the reaction container takes a certain time to complete the treatment, but it cannot occupy the container for a long time, resulting in the inability of the raw materials in the previous step to enter and the lack of raw materials in the next step to proceed. When the raw materials are relatively fine, the overall alkalization time is shorter. The fast primary alkalization raw materials from the alkalization pool 5 are first subjected to fast secondary alkalization treatment in the multi-functional pool 6, then fast primary etherification treatment, and then the materials subjected to fast primary etherification treatment are transported to the etherification pool 7 for fast secondary etherification treatment; when the raw materials are relatively rough, the overall alkalization time is longer. The slow primary alkalization raw materials from the alkalization pool 5 are subjected to slow secondary alkalization treatment in the multi-functional pool 6, and then the alkalized materials are transported to the etherification pool 7. According to the characteristics of different raw materials, the production efficiency is adjusted by the function conversion of the multi-functional pool 6.

[0021] On the one hand, the soaking pool 1 receives raw materials, and on the other hand, it receives hot water from the cooking pool 2. By fully soaking the fecal raw materials, the feces absorb water and soften into a paste or a thin paste. Through stirring and scooping, the plant-based raw materials rich in cellulose enter the cooking pool 2, and at the same time, the liquid containing substances such as gravel is discharged.

[0022] The cooking pool 2 cooks the cellulose-rich plant raw materials from the soaking pool 1. After that, the cooked cellulose is fished out and sent to the oven 3 for drying. Then it is broken into a predetermined size by the crusher 4 and conveyed to the alkalization pool 5.

[0023] The lye mixing pool 8 conveys the lye into the alkalization pool 5 through the first lye pump 10 to preliminarily alkalize the raw materials from the crusher 4. The acid solution storage pool 9 conveys the acid solution into the etherification pool 7 through the second acid solution pump 13 to etherify the materials from the multi-functional pool 6.

[0024] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A controllable regulation system for alkalization and etherification of cellulose production, characterized in that, It includes a multi-functional pool (6), and the multi-functional pool (6) is respectively connected to an alkali solution mixing pool (8) and an acid solution temporary storage pool (9) through a second alkali solution pump (11) and a first acid solution pump (12). The inlet of the multi-functional pool (6) is connected to the outlet of an alkalization pool (5), and the outlet of the multi-functional pool (6) is connected to the inlet of an etherification pool (7).

2. The alkalization and etherification controllable regulation system for cellulose production according to claim 1, wherein An immersion pool (1) is provided with a raw material inlet and a waste residue outlet, and the immersion pool (1) is bidirectionally connected to a cooking pool (2).

3. The alkalization and etherification controllable regulation system for cellulose production according to claim 2, wherein The cooking pool (2) is sequentially connected to an oven (3), a crusher (4), and an alkalization pool (5).

4. The alkalization and etherification controllable adjustment system for cellulose production according to claim 3, wherein, The alkalization pool (5) is connected to the alkali solution mixing pool (8) through a first alkali solution pump (10).

5. The alkalization and etherification controllable regulation system for cellulose production according to claim 1, wherein The etherification pool (7) is connected to the acid solution temporary storage pool (9) through a second acid solution pump (13).

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