CN201242165Y

CN201242165Y - Two-stage vertical gas making blowing heat recovery device

Info

Publication number: CN201242165Y
Application number: CNU2008201154810U
Authority: CN
Inventors: 周士友
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-11
Filing date: 2008-06-11
Publication date: 2009-05-20
Anticipated expiration: 2018-06-11

Abstract

The utility model discloses a two-stage vertical gasification blow-out air heat-recovering device, which is composed of a combustion furnace, a boiling furnace, an air distribution plate of the boiling furnace, a Venturi tube, a gasification blow-out air inlet, a diffusing section of the Venturi tube, an outlet of the combustion furnace, a primary air inlet and a vent gas inlet, wherein the gasification blow-out air inlet, the vent gas inlet and the outlet of the combustion furnace are arranged on the upper section of the combustion furnace, the lower section of the combustion furnace is connected with the boiling furnace, the primary air inlet is arranged in the boiling furnace, the air distribution plate of the boiling furnace is arranged on the bottom of the boiling furnace, and the upper section of the combustion furnace is communicated with the lower section of the combustion furnace through the Venturi tube, a segmented vertical structure of the combustion furnace can lower the dust content of a part of high temperature flue gas of fire coal, the venture effect is utilized to lift high temperature gas rapidly to the upper section of the combustion furnace, the high temperature gas is mixed with the gasification blow-out air, and the heat-recovering device has the beneficial effects that the investment is saved, the occupied area is reduced, the heat-recovering device is energy-saving and environment-friendly, and the like.

Description

A kind of two sections vertical producing gas blower waste-heat recovery devices

Technical field

The utility model relates to a kind of two sections vertical producing gas blower waste-heat recovery devices, belongs to the energy resource apparatus and technology field.

Background technology

In the prior art field, the producing gas blower that contains a large amount of heat energy can discharge in process of production in many enterprises, directly not only cause the waste of the energy after the discharging, also caused pollution to environment, existing waste-heat recovery device is commonly straight barrel type, with coal-fired high-temperature flue gas and the direct mixed combustion of blowing-out gas, carry out the simple dedusting of hot precipitator again, carry out heat recovery to waste heat boiler at last, its furnace gas phosphorus content height of this structure waste-heat recovery device, circulating ash quantity is big and combustion chamber draft is too big, easily causes the outlet coking, and air-flow is obstructed, heat exchange efficiency is low, thermal losses is big, and is big to the wearing and tearing of boiler comb.

The utility model content

The utility model provides a kind of two sections vertical producing gas blower waste-heat recovery devices at the deficiencies in the prior art.

For realizing the above object, the technical solution adopted in the utility model is:

A kind of two sections vertical producing gas blower waste-heat recovery devices are made up of combustion furnace, fluidized bed furnace, fluidized bed furnace air distribution plate, Venturi tube, producing gas blower import, Venturi tube diffuser, combustion furnace outlet, wind inlet, an off-gas inlet; Wherein the epimere of combustion furnace is provided with producing gas blower import, off-gas inlet and combustion furnace outlet, the combustion furnace hypomere is connected with fluidized bed furnace, fluidized bed furnace is provided with the wind inlet one time, and the fluidized bed furnace air distribution plate places the fluidized bed furnace bottom, and the combustion furnace epimere is connected with the combustion furnace hypomere by Venturi tube.

After a wind enters retracting device by a wind inlet, under the effect of fluidized bed furnace, produce hot gas rapidly, and at little negative pressure band of fluidized bed furnace upper end formation, again because Venturi effect, high-temperature gas rises to the combustion furnace epimere rapidly, at the venturi diffuser, the mutual bonding back of grit utilizes once more along furnace wall landing to fluidized bed furnace air distribution plate, high-temperature gas can make the producing gas blower burning with after producing gas blower mixes, and the sensible heat of generation and latent heat carry out abundant heat exchange through the combustion furnace outlet with boiler, byproduct steam, the slag that is reclaimed, flying dust can utilize its heat energy once more by fluidized bed furnace.

The utility model adopts combustion furnace segmentation vertical structure can reduce coal-fired part high-temperature flue gas dustiness, reduce the space of negative pressuren zone, reach the effect that reduction is carried speed and improved transport disengaging height TDH after isolating burning, separated in synchronization, help dustiness and drop to the mixed combustion again when suitable of dust-laden with blowing-out gas, improve the thermal efficiency of steam generator system, and can exempt to adorn hot precipitator, have simple in structure, heat transfer rate is high, equipment compatibility good, reduce investment outlay, reduce beneficial features such as floor space.

Description of drawings

Fig. 1 is the utility model structure chart

The specific embodiment:

As shown in Figure 1, a kind of two sections vertical producing gas blower waste-heat recovery devices are made up of fluidized bed furnace 1, Venturi tube 2, Venturi tube diffuser 3, producing gas blower import 4, combustion furnace outlet 5, off-gas inlet 6, combustion furnace 7, fluidized bed furnace air distribution plate 8, a wind inlet 9; Have two kinds of embodiments, as follows respectively:

Embodiment one:

After a wind enters fluidized bed furnace 1 by a wind inlet 9, fluidized bed furnace 1 interior coal dust is burnt rapidly, the hot gas that produces produces little negative pressure in fluidized bed furnace 1 upper end, under the effect of Venturi tube 2 effects, enter combustion furnace 7 epimeres fast through combustion furnace 7 hypomeres, when Venturi tube diffuser 2, the hot gas flow velocity slows down, the mutual bonding increase of contained grit back falls on the fluidized bed furnace air distribution plate 8 along the furnace wall and utilizes once more, like this behind the less hot gas and the abundant mixed combustion of producing gas blower import 4 gases of dustiness, the sensible heat of producing gas blower and latent heat are passed to waste heat boiler by combustion furnace outlet 5 carry out heat exchange, byproduct steam.

Embodiment two:

Coal dust is not under the combustion case in fluidized bed furnace 1, with off-gas behind off-gas inlet 6 input combustion furnace epimeres, behind the abundant catalytic combustion of producing gas blower import 4 gases, again the sensible heat of producing gas blower and latent heat are passed to waste heat boiler by combustion furnace outlet 5 and carry out heat exchange, byproduct steam.

The utility model adopts combustion furnace segmentation vertical structure, utilizes Venturi tube effect, can fall The dust content of low flue gas reduces system to the wearing and tearing of boiler exhaust gas, improves heat exchange efficiency, has joint The beneficial effects such as investment-saving, minimizing floor space, energy-conserving and environment-protective.

Claims

1, a kind of two sections vertical producing gas blower waste-heat recovery devices are made up of combustion furnace, fluidized bed furnace, fluidized bed furnace air distribution plate, Venturi tube, producing gas blower import, Venturi tube diffuser, combustion furnace outlet, wind inlet, an off-gas inlet; It is characterized in that: the epimere of described combustion furnace is provided with producing gas blower import, off-gas inlet and combustion furnace outlet, and the combustion furnace epimere is connected with the combustion furnace hypomere by Venturi tube.

2, a kind of two sections vertical producing gas blower waste-heat recovery devices according to claim 1, it is characterized in that: described combustion furnace is two sections vertical structures.