阅读说明：本技术 一种超重力床脱除木糖母液中甲醇的装置及控制方法 (Device for removing methanol in xylose mother liquor by using supergravity bed and control method ) 是由 蒋晓霄 黄江 张峰 赵正龙 陈国华 于 2020-06-15 设计创作，主要内容包括：本发明公开了一种超重力床脱除木糖母液中甲醇的装置,包括母液储罐,母液储罐连接有进料泵,进料泵连接有预热器,预热器连接有超重力床,超重力床的液体出口连接有木糖储罐,超重力床的气体出口连接有一级冷凝器,一级冷凝器连接有缓冲罐,缓冲罐连接有回流泵,回流泵通过第二分支采出管路连接有二级冷凝器,二级冷凝器连接有甲醇储罐。本发明具有以下优点和效果：母液中木糖和甲醇含量的变化可以通过控制超重力床温度和回流比使采出成品始终达到要求,设备工艺流程简单,操作灵活,超重力床可快速脱除母液中甲醇,得到高纯度木糖,同时获得高纯度甲醇,增加了经济价值；且该方法能快速脱除热敏物料中溶剂,热敏物料受热时间短不易分解变质。(The invention discloses a device for removing methanol in xylose mother liquor by a supergravity bed, which comprises a mother liquor storage tank, wherein the mother liquor storage tank is connected with a feed pump, the feed pump is connected with a preheater, the preheater is connected with the supergravity bed, a liquid outlet of the supergravity bed is connected with a xylose storage tank, a gas outlet of the supergravity bed is connected with a first-stage condenser, the first-stage condenser is connected with a buffer tank, the buffer tank is connected with a reflux pump, the reflux pump is connected with a second-stage condenser through a second branch extraction pipeline, and the second-stage condenser is connected with a. The invention has the following advantages and effects: the change of the xylose and methanol content in the mother liquor can ensure that the extracted finished product always meets the requirements by controlling the temperature and the reflux ratio of the supergravity bed, the equipment process flow is simple, the operation is flexible, the supergravity bed can quickly remove the methanol in the mother liquor to obtain high-purity xylose, and simultaneously obtain high-purity methanol, thereby increasing the economic value; the method can rapidly remove the solvent in the thermosensitive material, and the thermosensitive material is short in heating time and not easy to decompose and deteriorate.)

1. The utility model provides a device of methanol in hypergravity bed desorption xylose mother liquor which characterized in that: including mother liquor storage tank (1), the material exit linkage of mother liquor storage tank (1) has charge pump (2), the exit linkage of charge pump (2) has pre-heater (3), the exit linkage of pre-heater (3) has hypergravity bed (4), the liquid outlet of hypergravity bed (4) is connected with xylose storage tank (12), the gas outlet of hypergravity bed (4) is connected with one-level condenser (5), the liquid outlet of one-level condenser (5) is connected with buffer tank (6), the liquid outlet of buffer tank (6) is connected with backwash pump (7), the export of backwash pump (7) is connected with second grade condenser (10) through second branch extraction pipeline (9), the exit linkage of second grade condenser (10) has methanol storage tank (11).

2. The device for removing methanol in xylose mother liquor by using the supergravity bed as claimed in claim 1, which is characterized in that: the second branch extraction pipeline (9) is connected with a liquid reflux port of the supergravity bed (4) through a first branch reflux pipeline (8).

3. The device for removing methanol in xylose mother liquor by using the supergravity bed as claimed in claim 1, which is characterized in that: and a steam inlet of the preheater (3) and a steam inlet of the supergravity bed (4) are both connected with a steam pipeline (13).

4. The device for removing methanol in xylose mother liquor by using the supergravity bed as claimed in claim 1, which is characterized in that: the primary condenser (5) and the secondary condenser (10) both comprise a shell and tube heat exchanger, a spiral wound tube heat exchanger or a spiral plate heat exchanger.

5. The device for removing methanol in xylose mother liquor by using the supergravity bed as claimed in claim 1, which is characterized in that: the feed pump (2) and the reflux pump (7) both comprise centrifugal pumps or magnetic pumps.

6. The device for removing methanol in xylose mother liquor by using the supergravity bed as claimed in claim 1, which is characterized in that: the hypergravity bed (4) comprises a packing type hypergravity bed or a baffling type hypergravity bed.

7. A control method of a device for removing methanol in xylose mother liquor by a hypergravity bed, which is the device for removing methanol in xylose mother liquor by the hypergravity bed according to any one of claims 2 to 6, and is characterized in that: the working pressure of the supergravity bed (4) is-0.098 MPa, and the working temperature is 10-100 ℃.

8. The method for controlling the device for removing methanol in xylose mother liquor by using the hypergravity bed as claimed in claim 7, is characterized in that: the temperature of the preheater (3) is 10-100 ℃.

9. The method for controlling the device for removing methanol in xylose mother liquor by using the hypergravity bed as claimed in claim 7, is characterized in that: the xylose content in the xylose mother liquor in the mother liquor storage tank (1) is controlled to be 40-70%, the methanol content is controlled to be 10-30%, the water content is controlled to be 20-50%, and the flow of the feed pump (2) is controlled to be 200-2000L/h.

Technical Field

The invention relates to the technical field of xylose separation and purification, in particular to a device for removing methanol in xylose mother liquor by a hypergravity bed and a control method.

Background

Xylose is an important functional food, has no energy value when not digested and absorbed by human body, has the outstanding advantages of reducing serum cholesterol and preventing intestinal cancer, and can be produced by using crop straws, corncobs and the like as raw materials. During the production process of xylose, the viscosity of the xylose mother liquor is high, and the mother liquor can change color after being heated for a long time. The solvent in the viscous heat-sensitive material is generally extracted by flash separation, the residual amount of methanol in xylose separated by the flash separation is high, the concentration of the recovered methanol is low, and the high-purity and high-quality xylose is difficult to obtain.

Disclosure of Invention

The invention aims to provide a device for removing methanol in xylose mother liquor by a supergravity bed, which can quickly remove the methanol in the mother liquor so as to obtain high-purity and high-quality xylose.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a device of methyl alcohol in hypergravity bed desorption xylose mother liquor, includes the mother liquor storage tank, the material exit linkage of mother liquor storage tank has the charge pump, the exit linkage of charge pump has the pre-heater, the exit linkage of pre-heater has hypergravity bed, the liquid outlet of hypergravity bed is connected with the xylose storage tank, the gas outlet of hypergravity bed is connected with the one-level condenser, the liquid outlet of one-level condenser is connected with the buffer tank, the liquid outlet of buffer tank is connected with the backwash pump, the export of backwash pump has the second grade condenser through the branch extraction pipe connection of second, the exit linkage of second grade condenser has the methyl alcohol storage tank.

Further setting the following steps: and the second branch production and discharge pipeline is connected with a liquid reflux port of the supergravity bed through a first branch reflux pipeline.

Further setting the following steps: and the steam inlet of the preheater and the steam inlet of the supergravity bed are both connected with a steam pipeline.

Further setting the following steps: the first-stage condenser and the second-stage condenser respectively comprise a shell and tube heat exchanger, a spiral wound tube heat exchanger or a spiral plate heat exchanger.

Further setting the following steps: the feed pump and the reflux pump both comprise centrifugal pumps or magnetic pumps.

Further setting the following steps: the hypergravity bed comprises a packing type hypergravity bed or a baffling type hypergravity bed.

The invention also aims to provide a device control method for removing methanol in xylose mother liquor by a supergravity bed, and the device control method can be matched with the device to obtain high-purity xylose and high-purity methanol, so that the economic value is increased.

The technical purpose of the invention is realized by the following technical scheme: a control method of a device for removing methanol in xylose mother liquor by a supergravity bed is characterized in that the working pressure of the supergravity bed is-0.098 MPa, and the working temperature is 10-100 ℃.

Further setting the following steps: the temperature of the preheater is 10-100 ℃.

Further setting the following steps: the xylose content in the xylose mother liquor in the mother liquor storage tank is controlled to be 40-70%, the methanol content is controlled to be 10-30%, the water content is controlled to be 20-50%, and the flow of the feeding pump material is controlled to be 200-2000L/h.

In conclusion, the invention has the following beneficial effects: xylose and methanol are separated by using a supergravity bed, xylose mother liquor enters the supergravity bed for separation after being preheated by a preheater, the mother liquor is changed into liquid drops, liquid threads and a liquid film under the action of centrifugal force to be fully contacted with steam for mass transfer and heat transfer to realize separation, the change of the content of the xylose and the methanol in the mother liquor can enable the extracted finished product to meet the requirement all the time by controlling the temperature and the reflux ratio of the supergravity bed, the equipment process flow is simple, the operation is flexible, the methanol in the mother liquor can be rapidly removed by the supergravity bed to obtain the high-purity xylose, and meanwhile, the high-purity methanol is obtained, so the economic value is increased.

Drawings

Fig. 1 is a schematic structural diagram of the first embodiment.

In the figure: 1. a mother liquor storage tank; 2. a feed pump; 3. a preheater; 4. a super-gravity bed; 5. a first-stage condenser; 6. a buffer tank; 7. a reflux pump; 8. a first branch return line; 9. a second branch production line; 10. a secondary condenser; 11. a methanol storage tank; 12. a xylose storage tank; 13. a steam pipeline.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.