CN1216821A

CN1216821A - Negative pressure drying cooling device

Info

Publication number: CN1216821A
Application number: CN 97119993
Authority: CN
Inventors: 戴永茂
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-11-03
Filing date: 1997-11-03
Publication date: 1999-05-19

Abstract

It is an efficient economize drying cooler operating under negative pressure. Drying chamber and cooling chamber are in one sealed adiabatic vertical container connected with an external wind pumping machine. The hot air/smoke flow generated in indirect heating hot-blast furnace transfers heat energy to the worked materials passing through radiator, cimney, dust collector, mesh bed surface and wall fitted in the drying chamber by way of conduction and radiation while the materials flow from top to bottom by its gravity. The hot-blast air contacts the materials directly. The materials are under nagative pressure by common action with wind pumping machine, so the moisture is easier to be evaporated. The cold wind to cool the material from bottom to top is further heated by absorbing heat and enhancing temperature, then it is sent into the drying chamber passing through the radiator-type syclone dust collector. The materials is discharged from exit.

Description

Negative pressure drying cooling device

Drying principles of the present invention is between vacuum drying and normal pressure heated-air drying.Be intended to get the length of the two, restrain its weak point.Belong to dry technology (F26B).

Its structure as shown in drawings.

Fig. 1 is its coal-burning profilograph;

Fig. 2 is its fuel oil, gas; The electric heating type profilograph;

Fig. 3 is the vertical view of its coal-burning radiator;

Fig. 4 is the vertical view of its coal-burning heat radiator type cyclone dust collectors;

Fig. 5 is the profile of its wind-force cleaner master vertical view;

Fig. 6 is its fuel oil, gas; The vertical view of electric heating type hot blast base.

It is configured with coal-burning wall (1), thermal insulating warm-keeping layer (2), shell (3), hot-air mouth (4), (5), (6), gas approach (7), exhanst gas outlet (8), takes out air-vent (9), charging aperture (10), discharging opening (11), cold wind mouth (12), mesh bed surface (13), heat radiator type cyclone dust collectors (14), chimney (15), heat-shielding net (16), radiator (17), mesh cover (18).

Wall is its main part.It forms thermal insulating warm-keeping layer with heat-insulating material abrim between the shell.Have hot-air mouth on every side, gas approach, exhanst gas outlet, take out air-vent.Charging aperture is arranged at the top, and the dense block device of air is arranged above it.Discharging opening, cold wind mouth are arranged at the bottom.It in the wall dry cooling chamber.Be chimney in the middle of the hothouse, its bottom connects the heat radiator type cyclone dust collectors, and top connects radiator.It above the radiator mesh cover.Overheated for preventing material, be covered with heat-shielding net around the heat radiator type cyclone dust collectors outside and the chimney, thereby material is not in direct contact with it.Be mesh bed surface and blanking port between chimney and the wall, the mesh bed surface is the garden mesa shape, two kinds of cooperations of convex-concave.Mesh cover, radiator, mesh bed surface, heat radiator type cyclone dust collectors all closely are fixed on the wall.Deduster is a hothouse with top, is cooling chamber with the lower part.It in the middle of the cooling chamber deduster Taper Pipe.

The purpose that radiator is set is in order to utilize heat energy more fully.Is that chimney turns round (19) in the middle of it, around turning round and above many vertical radiating fins (20) are arranged, the radiating fin outer end links to each other with first ring-shaped cylinder (21), this both can make these radiating fins firm solid, also can increase area of dissipation.A small amount of radiating fin (22) stretches out first ring-shaped cylinder symmetrically, links to each other with second ring-shaped cylinder (23).Porose on second annular garden post, in order to be fastenedly connected with wall.Turning round has gusset (24) in the vertical flue.

In the middle of the heat radiator type cyclone dust collectors is deduster (25), and it is outdoor that the bottom has cleaning door to stretch out from the cooling chamber bottom sides, and all the other are identical with radiator.

In order to plant the circulation that is beneficial to hot blast and cold wind in dry cooling procedure, material is advanced sector-style power cleaning before entering dry cooling chamber.Designed wind-force cleaner (Fig. 5) for this reason.It hopper (29), blanking amount adjustable plate (30), the adjustable plate that connects material (31), air inlet (32) are arranged and take out that the air-introduced machine air port links to each other, its two side has the transportation work style of being close to adjustment doors (33), unlikely too concentrated for making wind-force, also be provided with mesh plate (34).

As shown in the figure, material is blown over material by the wind of taking out air-introduced machine from side direction simultaneously by the gravity fall of hopper by self, and lighter foreign material are blown to opposite side to be separated with material; Material then continues to fall, and enters receiving hopper.Regulate blanking amount adjustable plate and can adapt to different materials with the adjustable plate that connects material; The transportation work style adjustment doors is close in adjusting can change the size of blowing over the material air quantity.

Material through the wind-force cleaning is sent into dry cooling chamber top seal lock gas hopper by elevator, and the gravity by self flows into dry cooling chamber then.

Meanwhile, under the effect of air-introduced machine, the hot blast that indirectly-heated coal-fired hot-blast stove produces enters hothouse by hot-air mouth; Flue gas enters cyclone dust collectors, chimney, radiator by gas approach.Hot blast directly contacts material and passes through the bed of material; Flue gas is then passed to heat material, is passed to hothouse with the heat transfer type of conduction, radiation indirectly by cyclone dust collectors, chimney, radiator, wall and mesh bed surface.This two aspects acting in conjunction makes hothouse keep certain temperature, forms heat power from bottom to top, produces thermal current, passes through the bed of material with extremely strong penetration power.The acting in conjunction of air-introduced machine in addition, moisture and dried hot blast that material produces, very fast quilt is drawn hothouse, thereby makes hothouse air pressure be lower than external pressure, forms negative pressure.The moisture content of material is easier evaporation under the state of negative pressure.

Because cooling chamber and hothouse are one, so cooling chamber also is in negative pressure state, cold air then enters cooling chamber from bottom to top by the cold wind mouth of bottom, cools off material, and heat absorption heats up, and after through deduster it further being heated at last, enters hothouse.Two benefits are arranged like this, and one can make material progressively cool off, and it is very approaching to reduce quick-fried waist, explosion while final material temperature and ambient temperature; The 2nd, can make full use of heat energy, the heat that discharges when material is cooled off is used for the material above dry again.

Fuel oil, gas; Its principle of electric heating type and coal-burning are basic identical.Hot blast enters hothouse through mesh warm-air pipe (35), and its seat (36) is fixed on the wall.

Claims

The present invention is a kind of negative pressure drying cooling device.It is characterized in that: in the airtight container that is surrounded by wall (1), top is hothouse, and the bottom is a cooling chamber; Mesh cover (18), radiator (17), chimney (15), heat-shielding net (16), mesh bed surface (13), heat radiator type cyclone dust collectors (14) are arranged in the hothouse; Also there are mesh bed surface (13), bottom that cold wind mouth (12) is arranged in the cooling chamber; Mesh cover, radiator, mesh bed surface and heat radiator type deduster all closely are fixed on the wall; Wall is outward thermal insulating warm-keeping layer (2); Gas approach (7), hot blast import (4), (5), (6), exhanst gas outlet (8) are arranged on the wall and take out air-vent (9); In the middle of fuel oil, gas, the electric heating type hothouse mesh warm-air pipe (35) and seat (36) thereof; Material is removed the foreign material that hinder the hot blast circulation through the wind-force cleaner earlier before entering dry cooling chamber; Its wind regime is that dry cooling chamber is taken out air-introduced machine.