Fluidized bed waste heat utilization system in isovitamin C refining production

Abstract

The utility model relates to a fluidized bed waste heat utilization system in isovitamin C refining production, which comprises fluidized bed steam tail gas, primary water and a condensate water buffer tank, the steam tail gas is connected to the middle of the condensate water buffer tank through a gas inlet pipe, and the primary water is connected to the middle of the upper end of the condensate water buffer tank through a water inlet pipe. A drain pipe is connected to the bottom of the condensate water buffer tank, a centrifugal pump is mounted on the drain pipe, and the outer end of the drain pipe is connected with the fermentation batching tank. According to the system, fluidized bed steam tail gas is guided into a condensate water buffer tank through an inlet pipe, the steam tail gas is sprayed out from bottom to top, primary water is sprayed from top to bottom to make contact with steam, the steam is converted into liquid from gas when encountering cold, meanwhile, heat is released, the primary water is heated, and the heated primary water is used by a subsequent fermentation batching tank; the full utilization of the steam tail gas is realized, the energy waste is avoided, and the production cost is favorably controlled.

Description

Technical Field

[0001] The utility model relates to the field of production and processing of isovitamin C, in particular to a fluidized bed waste heat utilization system in the refining production of isovitamin C. Background Art

[0002] As a cheap and safe antioxidant, isovitamin C is widely used in food, feed, cosmetics and medicine. It is especially widely used in the food industry, where it is mainly used as a food antioxidant preservative to maintain food color and natural flavor and extend shelf life.

[0003] A fluidized bed is usually required in the refining production process of isovitaminosis C. The isovitaminosis C finished powder is dried on the fluidized bed. Currently, the steam exhaust gas generated during the fluidized bed drying process is usually discharged directly. The steam exhaust gas is not fully utilized, resulting in energy waste and is not conducive to controlling production costs. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a fluidized bed waste heat utilization system in isovitamin C refining production.

[0005] The technical solution of the utility model is:

[0006] A fluidized bed waste heat utilization system in isovitamin C refining production includes steam tail gas and primary water of the fluidized bed, and also includes a condensed water buffer tank. The condensed water buffer tank is a circular tank body. The steam tail gas is connected to the middle part of the condensed water buffer tank through an air inlet pipe. The steam tail gas is the gas discharged after passing through a fluidized bed heat exchanger. The primary water is connected to the middle of the upper end of the condensed water buffer tank through an inlet pipe. A drain pipe is connected to the bottom of the condensed water buffer tank, a centrifugal pump is installed on the drain pipe, and the outer end of the drain pipe is connected to a fermentation ingredient tank.

[0007] Preferably, a cache water tank is provided in the system, the cache water tank is supported by legs, and a drainage pipe is connected from the top of the cache water tank and connected from the bottom.

[0008] Preferably, a liquid level gauge is provided on the outside of the cache water tank.

[0009] Preferably, a sealing cover is provided on the top of the condensate buffer tank, and an exhaust pipe is provided on the sealing cover.

[0010] Preferably, a primary water distributor is provided on the upper portion of the condensate buffer tank, the primary water distributor is fixedly installed in the condensate buffer tank through a bracket, and the outlet end of the water inlet pipe is connected to the primary water distributor.

[0011] Preferably, the outer end of the air inlet pipe is provided with a jet assembly, which comprises a plurality of coaxially mounted annular tubes, the annular tubes being connected via branch pipes, and a water spray is provided on the annular tubes, the nozzles of the nozzles all being vertically upward.

[0012] Preferably, an automatic control valve is provided at the connection between the drainage pipe and the fermentation batching tank.

[0013] The beneficial technical effects of the utility model are:

[0014] The system introduces the fluidized bed steam exhaust gas into the condensate buffer tank through an inlet pipe. The steam exhaust gas is sprayed out from bottom to top, and primary water is sprayed from top to bottom to contact the steam. The steam is converted from gas to liquid when it is cooled and releases heat to heat the primary water. The heated primary water is then used in subsequent fermentation batching tanks, thereby fully utilizing the steam exhaust gas, avoiding energy waste, and helping to control production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a system schematic diagram of the utility model.

[0016] In the figure, 11. condensate buffer tank, 111. distributor, 112. jet assembly, 12. air inlet pipe, 13. exhaust pipe, 14. water inlet pipe, 15. drain pipe, 151. centrifugal pump, 152. automatic control valve, 16. buffer water tank, 161. liquid level meter. DETAILED DESCRIPTION

[0017] Embodiment 1, as Figure 1 As shown, a fluidized bed waste heat utilization system in the production of refined isovitamin C includes steam tail gas and primary water of the fluidized bed, and also includes a condensed water buffer tank 11. The steam tail gas is connected to the middle part of the condensed water buffer tank 11 through an air inlet pipe 12, and the primary water is connected to the middle of the upper end of the condensed water buffer tank 11 through a water inlet pipe 14. The steam tail gas is sprayed upward in the condensed water buffer tank 11, and the primary water is sprayed downward in the condensed water buffer tank 11 to contact the steam. The steam is converted from gas to liquid when it is cooled, and heat is released to heat the primary water. A drain pipe 15 is connected to the bottom of the condensed water buffer tank 11, and a centrifugal pump 151 is installed on the drain pipe 15. The outer end of the drain pipe 15 is connected to the fermentation batching tank. The batching water (30-37°C) can be supplied to the fermentation batching tank according to actual needs, which can save batching water and reduce production costs.

[0018] In this embodiment, a sealing cover is provided on the top of the condensed water buffer tank 11 , and an exhaust pipe 13 is provided on the sealing cover, through which the gas entering the condensed water buffer tank 11 is discharged.

[0019] In this embodiment, a primary water distributor 111 is provided on the upper part of the condensate buffer tank 11 , and the outlet end of the water inlet pipe 14 is connected to the primary water distributor 111 , and the primary water is evenly sprayed into the condensate buffer tank 11 through the distributor 111 .

[0020] In this embodiment, an injection assembly 112 is provided at the outer end of the air inlet pipe 12. The assembly comprises several annular tubes coaxially mounted therein. The annular tubes are connected by branch pipes and a water spray is provided on the annular tubes. The steam exhaust gas is evenly sprayed out through the injection assembly 112 to fully contact with primary water, thereby improving the heat exchange effect and further improving the heat utilization rate of the steam exhaust gas.

[0021] In this embodiment, an automatic control valve 152 is provided at the connection between the drainage pipe 15 and the fermentation batching tank to automatically control the supply of primary water.

[0022] The working process of the waste heat utilization system is as follows: the steam exhaust gas generated by the fluidized bed enters the middle of the condensate buffer tank 11 from the air inlet pipe 12, and is evenly sprayed upward under the action of the jet assembly 112. At the same time, primary water enters the distributor 111 from the water inlet pipe 14, and the distributor 111 evenly sprays the primary water into the condensate buffer tank 11. The steam exhaust gas is fully in contact with the primary water, and the steam is converted from gas to liquid when cooled, while releasing heat to heat the primary water. Then the automatic control valve 152 is opened, and the heated primary water enters the fermentation batching tank from the drain pipe 15 for use as batching water.

[0023] Embodiment 2, as Figure 1 As shown, a buffer water tank 16 is provided in the waste heat utilization system of the first embodiment, and a drain pipe 15 is connected from the top of the buffer water tank 16 and connected from the bottom. The buffer water tank 16 is used to temporarily store the heated primary water to ensure that the primary water can be continuously supplied to the fermentation ingredient tank.

[0024] In this embodiment, a liquid level meter 161 is provided on the outside of the water storage tank. The amount of water in the buffer water tank 16 is observed according to the liquid level meter 161, and the supply of steam exhaust gas and primary water is increased or reduced.

Claims

1. A fluidized bed waste heat utilization system in the production of isovitamin C refining, comprising steam tail gas and primary water of the fluidized bed, characterized in that: It also includes a condensate buffer tank. The steam tail gas is connected to the middle part of the condensate buffer tank through an air inlet pipe, and the primary water is connected to the middle of the upper end of the condensate buffer tank through an inlet pipe. A drain pipe is connected to the bottom of the condensate buffer tank, a centrifugal pump is installed on the drain pipe, and the outer end of the drain pipe is connected to the fermentation ingredient tank.

2. The fluidized bed waste heat utilization system in the refining production of isovitamin C according to claim 1, characterized in that: A buffer water tank is provided in the system, and a drainage pipe is connected from the top of the buffer water tank and is connected from the bottom.

3. The fluidized bed waste heat utilization system in the refining production of isovitamin C according to claim 2 is characterized by: A liquid level gauge is arranged on the outer side of the cache water tank.

4. The fluidized bed waste heat utilization system in the refining production of isovitamin C according to claim 1, characterized in that: A sealing cover is provided on the top of the condensate buffer tank, and an exhaust pipe is provided on the sealing cover.

5. The fluidized bed waste heat utilization system in the refining production of isovitamin C according to claim 1 is characterized by: A primary water distributor is provided on the upper part of the condensed water buffer tank, and the outlet end of the water inlet pipe is connected to the primary water distributor.

6. The fluidized bed waste heat utilization system in the refining production of isovitamin C according to claim 1 is characterized by: The outer end of the air inlet pipe is provided with a jet assembly, which comprises a plurality of coaxially sleeved annular pipes, the annular pipes are connected through branch pipes, and water spray is provided on the annular pipes.

7. The fluidized bed waste heat utilization system in the refining production of isovitamin C according to claim 1 is characterized by: An automatic control valve is arranged at the connection between the drainage pipe and the fermentation batching tank.

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