CN204678866U - The recyclable fluidized bed plant of a kind of waste heat for chemical material drying - Google Patents

Abstract

The utility model discloses a waste heat recyclable fluidized bed device used for drying chemical materials, which comprises a bed body and a heating assembly, the heating assembly is connected with an air inlet through an air inlet pipe, and the air outlet is connected with a gas-solid separator. The separator is connected to the heat recovery runner, and the heat recovery runner is divided into a heat recovery zone and a heat exchange zone through a partition plate. Air inlets and exhaust outlets are provided on both sides of the heat recovery zone and the heat exchange zone, and the air outlet passes through a recovery pipe and The air inlet of the heat recovery area is connected, and the air exhaust port of the heat exchange area is connected with the air inlet. Compared with the prior art, the utility model uses a gas-solid separator to separate the air and materials in the tail gas discharged from the top, so that the materials re-enter the bed body and dry under fluidization again, and the separated The hot air is recovered by the heat recovery wheel, and the heat is exchanged with the new air, and then re-introduced into the bed through the air inlet for drying, so as to achieve the reuse of waste heat. It has the advantages of simple structure and high energy utilization rate.

Description

A waste heat recoverable fluidized bed device for drying chemical materials

【Technical field】

The utility model relates to the technical field of chemical material drying equipment, in particular to a waste heat recyclable fluidized bed device used for chemical material drying.

【Background technique】

The drying of solid materials is an extremely important step in the chemical industry. For example, in medicine, food and feed additives, it is necessary to dry the in-process or final materials. The traditional methods are artificial drying, machine drying, etc. However, these methods exist Disadvantages such as unchanged site and low work efficiency.

For this reason, the fluidized bed is often used to dry materials. The wet materials entering the fluidized bed contact with the hot air entering from the bottom in the fluidized bed. After being uniformly and fully mixed, the water is removed to achieve drying and heating The air is discharged from the air outlet on the top of the fluidized bed, and qualified products are discharged from the outlet of the fluidized bed. However, the air discharged from the air outlet and material outlet of the fluidized bed has relatively high heat, and direct discharge is not conducive to the utilization of energy.

【Content of utility model】

The purpose of the utility model is to solve the problems in the prior art, and propose a waste heat recovery fluidized bed device for drying chemical materials, which can recover and utilize waste heat and improve energy utilization.

In order to achieve the above purpose, the utility model proposes a waste heat recyclable fluidized bed device for drying chemical materials, which includes a bed body provided with an air inlet and an air outlet, and a heating assembly for providing hot air for the bed body, The heating assembly is connected to the air inlet through the air inlet pipe, and the bed body is provided with a material inlet and a material outlet, and the air outlet is connected to a gas-solid separator through an air outlet pipe, and the exhaust of the gas-solid separator The feed pipe extends into the feed inlet of the bed, and the air outlet of the gas-solid separator is connected to a rotatable heat recovery runner, which is divided into a heat recovery zone and a heat exchange zone through a partition plate, and the heat recovery zone and the Both sides of the heat exchange area are provided with an air inlet and an air exhaust port, the air outlet is connected to the air inlet of the heat recovery area through a recovery pipe, and the air exhaust port of the heat exchange area is connected to the air inlet.

As a preference, the gas-solid separator is provided with a first baffle and a second baffle perpendicular to the inlet of the gas-solid separator, and the first baffle and the second baffle are located in the gas-solid separator. In front of the inlet of the device, the length of the first baffle is greater than the length of the second baffle.

Preferably, the heating assembly includes a blower and a heater, the outlet of the blower is connected to the inlet of the heater through a transition pipe, the outlet of the heater is connected to the air inlet through an air inlet pipe, and the heat recovery area The exhaust outlet of the air outlet is connected with the transition pipe through a check valve.

Preferably, the air outlet of the heat exchange area is connected to the air inlet pipe through an exhaust pipe.

Preferably, the transition pipe is provided with a branch connected to the air inlet of the heat exchange area, and the branch is provided with a second check valve.

Preferably, a thermometer is arranged inside the exhaust pipe.

Beneficial effects of the utility model: Compared with the prior art, the utility model uses a gas-solid separator to separate the air and materials in the tail gas discharged from the top, so that the materials can re-enter the bed body and be dried again under fluidization , and the separated air with heat is recovered by the heat recovery wheel, and the heat is used to exchange heat with the new air and then re-input into the bed through the air inlet for drying, so as to achieve the reuse of waste heat. It has a simple structure, The advantages of high energy efficiency.

The features and advantages of the utility model will be described in detail through embodiments in conjunction with the accompanying drawings.

【Description of drawings】

Fig. 1 is a structural representation of the utility model;

In the figure: 1-air inlet, 2-air outlet, 3-bed body, 4-inlet pipe, 5-inlet, 6-outlet, 7-outlet pipe, 8-gas-solid separator, 9 -Discharge pipe, 10-heat recovery runner, 11-air outlet, 12-partition plate, 13-heat recovery area, 14-heat exchange area, 15-recovery pipe, 16-first baffle plate, 17-the first Two baffles, 18-exhaust pipe, 19-blower, 20-heater, 21-transition pipe, 22-thermometer, 23-check valve, 24-branch, 25-second check valve.

【Detailed ways】

Referring to Fig. 1, the utility model includes a bed body 3 provided with an air inlet 1 and an air outlet 2, a heating assembly for providing hot air to the bed body 3, and the heating assembly is connected to the air inlet 1 through an air inlet pipe 4. connected, the bed body 3 is provided with a feed port 5 and a discharge port 6, and the air outlet 2 is connected with a gas-solid separator 8 through an air outlet pipe 7, and the discharge pipe 9 of the gas-solid separator 8 extends to the bed In the feed port 5 of the body, the air outlet 11 of the gas-solid separator 8 is connected to a rotatable heat recovery runner 10, and the heat recovery runner 10 is divided into a heat recovery zone 13 and a heat exchange zone 14 through a partition plate 12, Both sides of the heat recovery area 13 and the heat exchange area 14 are provided with air inlets and air outlets, the air outlet 11 is connected to the air inlet of the heat recovery area 13 through the recovery pipe 15, and the air outlet of the heat exchange area 14 Connect to air inlet 1. Use the gas-solid separator 8 to separate the exhaust gas discharged from the air outlet 2 of the bed body 3 into air and materials with heat, and use the discharge pipe 9 extending to the feed inlet 2 to make the materials re-enter the bed body 3 is again dried under fluidization, and the separated air with heat is heat-exchanged with the new air in the heat recovery wheel 10, and is re-input into the bed 3 through the air inlet 1 for drying and input into the bed body. The bed body 3 is used for drying to achieve reuse of waste heat, and has the advantages of simple structure and high energy utilization rate.

Specifically, the gas-solid separator 8 is provided with a first baffle 16 and a second baffle 17 perpendicular to the inlet of the gas-solid separator 8, and the first baffle 16 and the second baffle 17 are Located directly in front of the inlet of the gas-solid separator 8 , the length of the first baffle 16 is greater than that of the second baffle 17 . Using the gravity settling effect of the material, the material falls on the first baffle plate 16 and the second baffle plate 17, and then is discharged through the discharge pipe 9 to achieve gas-solid separation.

Specifically, the heating assembly includes a blower 19 and a heater 20, the outlet of the blower 19 is connected to the inlet of the heater 20 through a transition pipe 21, and the outlet of the heater 20 is connected to the air inlet through the exhaust pipe 4. 1, the exhaust outlet of the heat recovery zone 13 is connected to the transition pipe 21 through a check valve 23. The air that passes through the heat recovery zone 13 after heat recovery is discharged into the transition pipe 21, and then sent to the heater 20 for heating by the transition pipe 21. The design of the check valve 23 can prevent the air from flowing backward.

Specifically, the exhaust port of the heat exchange area 14 is connected to the exhaust pipe 4 through the exhaust pipe 18, and the air with heat after heat exchange in the heat exchange area 14 can be supplied to the exhaust pipe 4 through the exhaust pipe 18. The air is fed into the bed body 3 from the air inlet 1 and directly used for drying.

Specifically, the transition pipe 21 is bifurcated and provided with a branch pipe 24 connected to the air inlet of the heat exchange area 14. The branch pipe 24 is provided with a second check valve 25, and the exhaust pipe 18 is provided with a thermometer 22. , the thermometer 22 is used to measure the temperature of the exhaust gas, and the branch pipe 24 is the air intake for the heat exchange zone 14 .

The above-mentioned embodiment is an illustration of the utility model, not a limitation of the utility model, and any scheme after a simple transformation of the utility model belongs to the protection scope of the utility model.

Claims (6)

1. the recyclable fluidized bed plant of the waste heat for chemical material drying, comprise the bed body (3) that air inlet (1) and air outlet (2) are set, for providing the heating component of hot blast for described bed body (3), described heating component is connected with described air inlet (1) through blast pipe (4), bed body (3) arranges charging aperture (5) and discharging opening (6), it is characterized in that: described air outlet (2) is connected with gas-solid separator (8) through wind pipe (7), the drainage conduit (9) of described gas-solid separator (8) extends in the charging aperture (5) of a body, the air outlet slit (11) of gas-solid separator (8) connects rotating recuperation of heat runner (10), described recuperation of heat runner (10) is divided into heat recovery area (13) and heat transfer zone (14) through demarcation strip (12), heat recovery area (13) and heat transfer zone (14) both sides are equipped with air intake vent and exhaust outlet, described air outlet slit (11) is connected through the air intake vent of recovery tube (15) with heat recovery area (13), the exhaust outlet of described heat transfer zone (14) is connected with air inlet (1).

2. the recyclable fluidized bed plant of a kind of waste heat for chemical material drying according to claim 1, it is characterized in that: in described gas-solid separator (8), be provided with first baffle plate (16) vertical with the entrance of described gas-solid separator (8) and second baffle (17), described first baffle plate (16) and second baffle (17) are positioned at the dead ahead of the entrance of described gas-solid separator (8), and the length of the first baffle plate (16) is greater than the length of described second baffle (17).

3. the recyclable fluidized bed plant of a kind of waste heat for chemical material drying according to claim 2, it is characterized in that: described heating component comprises air blast (19) and heater (20), the outlet of described air blast (19) is connected through the import of transition conduit (21) with heater (20), the outlet of described heater (20) is connected with described air inlet (1) through exhaust duct (4), and the exhaust outlet of described heat recovery area (13) is connected with described transition conduit (21) through check (non-return) valve (23).

4. the recyclable fluidized bed plant of a kind of waste heat for chemical material drying according to claim 3, is characterized in that: the exhaust outlet of described heat transfer zone (14) is connected with described exhaust duct (4) through exhaust duct (18).

5. the recyclable fluidized bed plant of a kind of waste heat for chemical material drying according to claim 4, it is characterized in that: described transition conduit (21) is provided with the arm (24) be connected with heat transfer zone (14) air intake vent through bifurcated, described arm (24) is provided with the second check (non-return) valve (25).

6. the recyclable fluidized bed plant of a kind of waste heat for chemical material drying according to claim 4 or 5, is characterized in that: be provided with thermometer (22) in described exhaust duct (18).