CN212247089U

CN212247089U - Device of methanol in hypergravity bed desorption xylose mother liquor

Info

Publication number: CN212247089U
Application number: CN202021103883.6U
Authority: CN
Inventors: 蒋晓霄; 黄江; 张峰; 赵正龙; 陈国华
Original assignee: Zhejiang Yaguang Technology Co ltd
Current assignee: Zhejiang Yaguang Technology Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2020-12-29
Anticipated expiration: 2030-06-15

Abstract

The utility model discloses a device of methyl alcohol in hypergravity bed desorption xylose mother liquor, including the mother liquor storage tank, the mother liquor storage tank is connected with the charge pump, and the charge pump is connected with the pre-heater, and the pre-heater is connected with hypergravity bed, and the liquid outlet of hypergravity bed is connected with the xylose storage tank, and the gas outlet of hypergravity bed is connected with the one-level condenser, and the liquid outlet of one-level condenser is connected with the buffer tank, and the liquid outlet of buffer tank is connected with the backwash pump, and the export of backwash pump has the second grade condenser through the branch extraction pipe connection of second, and the exit. The utility model has the advantages of it is following and effect: the change of the xylose and methanol content in the mother liquor can enable the extracted finished product to meet the requirements 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 through the supergravity bed to obtain high-purity xylose, and simultaneously, the high-purity methanol is obtained, so that the economic value is increased.

Description

Device of methanol in hypergravity bed desorption xylose mother liquor

Technical Field

The utility model relates to a xylose separation and purification technical field, in particular to a device of methanol in hypergravity bed desorption xylose mother liquor.

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.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a device of methyl alcohol in hypergravity bed desorption xylose mother liquor, the device methyl alcohol in the mother liquor can the rapid desorption to obtain the xylose of high-purity high quality.

The above technical purpose of the present invention can be achieved by the following technical solutions: 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.

To sum up, the utility model discloses following beneficial effect has: 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.

Example one

Referring to fig. 1, a device of methyl alcohol in hypergravity bed desorption xylose mother liquor, including mother liquor storage tank 1, there is charge pump 2 in the material export of mother liquor storage tank 1 through the pipe connection, there is pre-heater 3 in the export of charge pump 2 through the pipe connection, there is hypergravity bed 4 in the export of pre-heater 3 through the pipe connection, there is xylose storage tank 12 in the liquid export of hypergravity bed 4 through the pipe connection, there is one-level condenser 5 in the gas outlet of hypergravity bed 4 through the pipe connection, there is buffer tank 6 in the liquid export of one-level condenser 5 through the pipe connection, there is reflux pump 7 in the liquid export of buffer tank 6 through the.

The outlet of the reflux pump 7 is connected with a second-stage condenser 10 through a second branch extraction pipeline 9, and the outlet of the second-stage condenser 10 is connected with a methanol storage tank 11 through a pipeline. The second branch extraction pipeline 9 is connected with a liquid reflux port of the hypergravity bed 4 through a first branch reflux pipeline 8. The steam inlet of the preheater 3 and the steam inlet of the supergravity bed 4 are both connected with a steam pipeline 13, and the steam pipeline 13 is connected with a steam pipeline in a workshop to provide low-pressure steam. The first-stage condenser 5 and the second-stage condenser 10 are both tube type heat exchangers, spiral wound tube type heat exchangers or spiral plate type heat exchangers, and the feed pump 2 and the reflux pump 7 are both centrifugal pumps or magnetic pumps. The hypergravity bed 4 is a packing type hypergravity bed or a baffling type hypergravity bed.

Example two

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 ℃. The temperature of the preheater is 10-100 ℃, 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%, the flow of the feeding pump material is controlled to be 200-2000L/h, and the pressure of a steam pipeline is controlled to be 0.1-0.4 MPa.

The method comprises the following steps: the xylose mother liquor contains 60 percent of xylose, 20 percent of methanol and 20 percent of water, the xylose mother liquor is conveyed from a mother liquor storage tank 1 to a preheater 3 through a feed pump 2, the feed flow rate of the feed pump 2 is controlled to be 500L/h, the mother liquor in the preheater 3 is heated to 70 ℃ through a steam pipeline 13, the heated mother liquor enters a supergravity bed 4, the rotating speed of an inner rotor in the supergravity bed 4 is set to be 700RPM, the temperature in the supergravity bed 4 is controlled through the steam pipeline 13, the xylose mother liquor forms liquid drops, liquid threads and liquid films with larger specific surface area in the supergravity bed 4, the methanol mother liquor is fully contacted with steam to vaporize and realize separation, the separated xylose aqueous solution flows into a xylose storage tank 12 from the bottom of the supergravity bed 4, the methanol gas flows into a primary condenser 5 from the top of the supergravity bed 4, the methanol gas flows into a liquid through the primary condenser 5 and flows into a buffer tank 6, a part, a part of the methanol flows into a secondary condenser 10, and the secondary condenser 10 cools the methanol and then flows into a methanol storage tank 11. The methanol residue in the xylose aqueous solution after the separation by the hypergravity bed 4 is less than 400PPM, and the purity of the recovered methanol is more than 90 percent.

The method 2 comprises the following steps: the xylose mother liquor contains 50 percent of xylose, 15 percent of methanol and 35 percent of water, the xylose mother liquor is conveyed from a mother liquor storage tank 1 to a preheater 3 through a feed pump 2, the feed flow of the feed pump 2 is controlled to be 1000L/h, heating the mother liquor in the preheater to 50 ℃ through a steam pipeline 13, feeding the heated mother liquor into the hypergravity bed 4, setting the rotating speed of the rotor in the hypergravity bed 4 to 800RPM, the temperature in the hypergravity bed 4 is controlled through a steam pipeline 13, the xylose mother liquor is separated in the hypergravity bed 4, the separated xylose aqueous solution flows into a xylose storage tank 12 from the bottom of the hypergravity bed 4, the methanol gas flows into a primary condenser 5 from the top of the hypergravity bed 4, the methanol gas is condensed into liquid through the primary condenser 5 and then flows into a buffer tank 6, a part of the methanol liquid in the buffer tank 6 flows back into a rectification bed 4, a part of the methanol liquid flows into a secondary condenser 10, and the secondary condenser 10 cools the methanol and then flows into a methanol storage tank 11. The methanol residue in the xylose aqueous solution after the separation by the hypergravity bed is less than 500PPM, and the purity of the recovered methanol is more than 85 percent.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

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.