Wet glycine powder conveying and drying device

Abstract

The utility model relates to the technical field of glycine production, in particular to a glycine wet powder conveying and drying device which comprises a Roots blower connected with a heater through an air pipe, the heater is connected with a centrifugal machine buffer storage bin, the centrifugal machine buffer storage bin is connected with a cyclone bag-type dust collector, and an air outlet of the cyclone bag-type dust collector is connected with a condenser. A liquid outlet of the condenser is connected with a condensate receiving tank; and a feed opening of the cyclone bag-type dust collector is connected with the packaging device. The glycine wet powder conveying and drying device has the advantages that the whole process operation of conveying and drying the glycine wet powder is achieved, alcohol in the glycine wet powder is recycled, meanwhile, unorganized emission of VOCS is reduced, the recycled alcohol VOCS can be used for the production process, and the production cost is reduced; (2) the glycine wet powder is transported and packaged after being dried, so that the cost of forklift and manual packaging is reduced; and (3) non-combustible gas is adopted for dry transportation, so that the risk of alcohol deflagration in the drying process is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of glycine production, in particular to a glycine wet powder conveying and drying device. Background Art

[0002] At present, glycine produced by the ammonolysis of chloroacetic acid is discharged by an alcohol extraction automatic unloading centrifuge. The packaging process of glycine wet powder to glycine finished product is complicated and involves many steps. VOCs exceed the standard during wet powder packaging and transportation, resulting in prominent odor problems on site. The degree of automation in glycine production is low, the labor intensity of workers is high, the on-site working environment is poor, and the safety risks of forklift transportation and disc drying are high. Summary of the invention

[0003] In view of the problems in the prior art, the utility model provides a glycine wet powder conveying and drying device, and its technical solution is: comprising a Roots blower connected to a heater through an air duct, the heater connected to a centrifuge buffer silo, the centrifuge buffer silo connected to a cyclone bag dust collector, the air outlet of the cyclone bag dust collector connected to a condenser, the liquid outlet of the condenser connected to a condensate receiving tank, so as to recover alcohols while reducing unorganized VOCs emissions; the discharge port of the cyclone bag dust collector is connected to a packaging device.

[0004] The gas outlet of the condenser is connected to the cyclone.

[0005] The air outlet of the cyclone is connected to a Roots blower to circulate the non-flammable gas.

[0006] The discharge port of the cyclone is connected to the condensate receiving tank.

[0007] As a preferred embodiment, the heater is a tube-in-tube heater or a spiral heater.

[0008] As a preferred embodiment, the condenser is a serpentine condenser or a shell-and-tube condenser.

[0009] As a preferred solution, the Roots blower, heater, centrifuge buffer silo, cyclone bag dust collector, packaging device, condenser, cyclone and condenser receiving tank are all centrally controlled by DCS, which can realize unmanned operation.

[0010] As a preferred solution, the gas used by the Roots blower is a non-combustible gas, such as nitrogen, carbon dioxide, argon, etc.

[0011] Beneficial effects of the utility model:

[0012] (1) The whole process of glycine wet powder transportation and drying is realized, and the alcohol in the glycine wet powder is recovered while reducing VOC S Fugitive emissions, recovered alcohol VOC SIt can be used in production processes to reduce production costs;

[0013] (2) Glycine wet powder is dried before transportation and packaging, reducing the cost of forklifts and manual packaging;

[0014] (3) The use of non-flammable gas for drying and transportation eliminates the risk of alcohol explosion during the drying process. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] In the figure: 1. Roots blower; 2. Heater; 3. Centrifuge buffer silo; 4. Cyclone bag dust collector; 5. Packaging device; 6. Condenser; 7. Cyclone; 8. Condensate receiving tank. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below based on the accompanying drawings and specific embodiments.

[0018] Example 1

[0019] A glycine wet powder conveying and drying device comprises a Roots blower 1 connected to a heater 2 through an air duct, the heater 2 is connected to a centrifuge buffer silo 3, the centrifuge buffer silo 3 is connected to a cyclone bag dust collector 4, the air outlet of the cyclone bag dust collector 4 is connected to a condenser 6, the liquid outlet of the condenser 6 is connected to a condensate receiving tank 8; the discharge port of the cyclone bag dust collector 4 is connected to a packaging device 5.

[0020] The gas outlet of the condenser 6 is connected to the cyclone 7 .

[0021] The air outlet of the cyclone 7 is connected to the Roots blower 1 .

[0022] The discharge port of the cyclone 7 is connected to the condensate receiving tank 8 .

[0023] Furthermore, the heater 2 is a tube-in-tube heater.

[0024] Furthermore, the condenser 6 is a serpentine condenser.

[0025] Furthermore, the Roots blower 1, the heater 2, the centrifuge buffer silo 3, the cyclone bag dust collector 4, the packaging device 5, the condenser 6, the cyclone 7 and the condenser receiving tank 8 are all centrally controlled by the DCS, and unmanned operation can be realized.

[0026] Furthermore, the gas used by the Roots blower 1 is nitrogen.

[0027] Example 2

[0028] The device of Example 1 is used, and its operation process is as follows:

[0029] Taking the methanol used for extraction in glycine production as an example, the glycine wet powder conveying and drying device is replaced with nitrogen to ensure that the oxygen content in the air duct is ≤5%, the Roots blower 1 is turned on, and the temperature of the heater 2 is set to 80°C. After the temperature reaches 80°C, the glycine wet powder after centrifugal unloading enters the glycine wet powder buffer bin 3, and enters the dry air delivery pipe through the feeder. The heated nitrogen makes the glycine wet powder dry and air delivered in the air delivery pipe. After the glycine wet powder is dried, it is separated by the cyclone bag dust collector 4, and enters the packaging device 5 through the discharge port of the cyclone bag dust collector 4 for product packaging. The methanol-containing gas part is condensed by the condenser 6 and flows into the condensate receiving tank 8 for recycling of glycine extraction.

Claims

1. A glycine wet powder conveying and drying device, characterized in that: The invention comprises a Roots blower (1) connected to a heater (2) through an air duct, the heater (2) connected to a centrifuge buffer silo (3), the centrifuge buffer silo (3) connected to a cyclone bag dust collector (4), the air outlet of the cyclone bag dust collector (4) connected to a condenser (6), the liquid outlet of the condenser (6) connected to a condensate receiving tank (8); and the discharge port of the cyclone bag dust collector (4) connected to a packaging device (5).

2. A glycine wet powder conveying and drying device according to claim 1, characterized in that: The gas outlet of the condenser (6) is connected to the cyclone (7).

3. A glycine wet powder conveying and drying device according to claim 2, characterized in that: The air outlet of the cyclone (7) is connected to the Roots blower (1).

4. A glycine wet powder conveying and drying device according to claim 2, characterized in that: The discharge port of the cyclone (7) is connected to the condensate receiving tank (8).

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