CN2435630Y

CN2435630Y - Natural ventilating semi-gas atmospheric hot water boiler

Info

Publication number: CN2435630Y
Application number: CN 00246937
Authority: CN
Inventors: 王小东
Original assignee: 赵冰玉
Priority date: 2000-08-04
Filing date: 2000-08-04
Publication date: 2001-06-20
Anticipated expiration: 2010-08-04

Abstract

The utility model relates to a natural ventilating semi-gas atmospheric hot water boiler, which is composed of three parts, wherein, a lower part is a coal gasifying boiler, a middle part is a hot-gas combustion chamber, and an upper part is a convection heat exchanger. The utility model uses natural ventilation so as to omit a blower and has good smoke elimination and dust removal. The Ringelman blackness of fume to be discharged is smaller than 1, and the concentration of smoke is less than 100 mg/Nm 3.

Description

Gravity-flow ventilation semi-coal gas normal-pressure hot-water boiler

The utility model relates to a kind of gravity-flow ventilation smoke abatement and dust control normal-pressure hot-water boiler.

Commercially available normal-pressure hot-water boiler (as the product of Shanxi province Taiyuan city second boiler factory) by chimney, inner bag, shell, fire grate, add fire door, remove cinder notch, intake-outlet, convection bank, exhaust outlet form, one gasification furnace is arranged on fire grate, be used to produce heating gas; One combustion chamber is arranged on gasification furnace, be used for combustion heat coal gas; One water pipe heat exchanger is arranged on the combustion chamber, be used to absorb the heat heat cycles water of flue gas.Air blast is arranged below the gasification furnace, and its wind path is divided into two-way, and one road drum is below fire grate, and one the tunnel blasts the combustion chamber.Its shortcoming is not only to have increased an air blast, how to regulate the ratio of two transportation work styles, also is difficult for grasping.Because air blast, cause that flue dust carries secretly, be difficult to reach the requirement of country to smoke abatement and dust control.The stove positive pressure operation, the flue gas of easily emerging in the boiler room.

The purpose of this utility model is to develop the good gravity-flow ventilation semi-coal gas normal-pressure hot-water boiler of a kind of smoke abatement and dust control.

The purpose of this utility model is achieved in that on the basis of above-mentioned prior art, without air blast, reduces the coal seam thickness of gasification furnace, adopt gravity-flow ventilation, make gasification furnace and combustion chamber all be in negative pressure state, regulate the size of air inlet, can regulate the intake of gasification furnace and combustion chamber.

Embodiment accompanying drawings of the present utility model is as follows:

Fig. 1 is a gravity-flow ventilation semi-coal gas normal-pressure hot-water boiler structural representation.

Fig. 2 is the A-A profile of Fig. 1.

As shown in the figure, 1 is chimney, and 2 is evacuated tube, and 3 is upper hose, and 4 is the heat convection pipe, and 5 is inner bag, and 6 is shell, and 7 is secondary air channel, and 8 is fire grate, and 9 is the ash door, and 10 is return pipe, and 11 is coal filling hole, and 12 is ash door, and 13 is the heat-accumulation combustion chamber, and 14 are the igniting peep hole.

Coal adds on the fire grate 9 from coal filling hole 11 interruptions, the thick about 200-250mm in coal seam, carry out redox reaction with a wind below fire grate, the low heat value heating gas that produces in heat storage type combustion chamber 13 with the secondary wind mixing after-combustion that tangentially enters, combustion chamber 13 inner lining refractory blocks, can accumulation of heat reach a high temperature, hot coal tolerance is reduced also not can cutoff; The secondary wind that tangentially enters guarantees that combustible burns, and high-temperature flue gas that comes out from heat storage

type combustion chamber

13 and 4 heat exchange of heat convection pipe are after chimney 1 emptying.

The flow process of water is: the low temperature backwater of heating enters shell 6 and the water leg that inner bag 5 forms through return pipe 10, and rising gradually enters heat convection pipe 14, and after the heat exchange, high-temperature water enters heating system through upper hose 3 and recycles.

The apparent advantage of the utility model is:

1. smoke abatement and dust control is good, and on probation and test shows that the lingemann blackness of discharging flue gas is less than 1, and dust concentration is at 100mg/Nm³Below.

2. save an air blast, reduced the cost of boiler.

3. gravity-flow ventilation, stove will be in negative pressure state, and stove does not outwards steam, workman's good operational environment.

Claims

1. gravity-flow ventilation semi-coal gas normal-pressure hot-water boiler, constitute by chimney (1), evacuated tube (2), upper hose (3), heat convection pipe (4), inner bag (5), shell (6), fire grate (8), ash door (9), return pipe (10), coal filling hole (11), ash door (12), it is characterized in that having set up heat storage type combustion chamber (13) and tangential secondary air channel (7) at the middle part of stove.