CN1584438A - Secondary combusting smokeless and dustless high-efficiency energy saving furnace and combusting method thereof - Google Patents

Abstract

A high performance smokeless and dustless energy-saving furnace with secondary combustion consists of a body, grate bars and two chambers with a partition, where a cyclic water pipe is arranged in. A slag-collecting duct is beneath the grate bars. A secondary gas pipe at outside is connected with the chambers. A loading opening and an airing pipe are arranged on the body. Purified flue with combustible gas is fed into a secondary combustion chamber, from which exhaust is exhausted out. Coal is fired completely and the furnace is efficient and clean with little loss and environment protection, saves coal by 40 - 50%, and costs low.

Description

Second-time burning smokeless and dust free efficient energy-saving furnace and combustion method thereof

Technical field the invention belongs to a kind of life and uses or production usefulness, particularly the second-time burning formula smokeless and dust free efficient energy-saving furnace and the combustion method thereof of the use of bean product manufacturer.

Background technology people know, in doing the process of bean curd, need a large amount of boiling water or hot water, and the existing way that boils water is to burn bavins or burning coal with several mouthfuls big iron pans, has plenty of with steam boiler and burns steam, and then remove to heat cold water with steam and become hot water.With big iron pan manufacture hot water's way is for thousands of years traditional method, simple to operate, everybody can, problem is that this way will produce volume of smoke, contaminated air, hinder ecology and environmental protection, next is the flame time of staying weak point that imitation frosted glass forms in the chamber of a kitchen range, has little time heat is passed to a pot body, and oxygen supply is insufficient, incomplete combustion, the heat utilization efficiency of fuel is low.The way of modern burning boiler; owing to increased thermal interface; the utilization rate of fuel improves; but oxygen supply is unreasonable; the problem of incomplete combustion still exists, and boiler is all bigger to the consumption of coal, and the flue dust that is produced is a lot; to environmental protection requirement more and more stricter today, the use of boiler is very limited.In addition, remove to produce steam, form secondary energy sources with boiler, are add hot water long excessively with secondary energy sources again, link is many, and the loss of heat is big, waste is many, and last production cost is often taller than traditional cauldron method of heating up water, and is not generally adopted by the numerous producers.Simultaneously, boiler still is a kind of explosive hazardous equipment, and its operation is had relatively high expectations, and there are strict requirements to this in country, and the non-general common people can arbitrarily use.

Summary of the invention the objective of the invention is to propose a kind of oxygen supply abundant, burn complete, hot imitate second-time burning formula smokeless and dust free efficient energy-saving furnace and combustion method thereof high, energy-conservation, with low cost, pollution-free, safe in utilization, processing ease, to overcome the deficiencies in the prior art.

This second-time burning smokeless and dust free efficient energy-saving furnace that the present invention proposes, it has shaft, fire bars, burner hearth, it is characterized in that burner hearth is in shaft, separate space is arranged between the two, separate space communicates with recirculated water turnover pipe, and burner hearth bottom has fire bars, and fire bars communicates with ash collection slot, furnace chamber is communicated with the shaft gas pipe for second-time burning outward, the coal filling hole of past burner hearth refuelling is housed on the shaft and gives an air feed pipe of burner hearth oxygen supply.

Burner hearth can be separated into a plurality of combustion chambers, there is coal filling hole each combustion chamber, and coal flap switch is arranged.

Between a plurality of combustion chambers separate space is arranged.

Upper furnace is the gas purification chamber, and purifying the bottom, chamber has filter screen.

The air feed point of an air feed pipe a side of fire bars, below or two sides up and down.

The indoor burner of gas pipe and second-time burning is communicated with, and is connected to secondary air feed pipe, and the top of burner is water bath or other heating container that is connected with circulating water outlet pipe.

Each air feed pipe and gas pipe all have gate valve.It has threeway tube head, screw rod seal cover and sluice cover this gate valve, straight-tube portion one end that it is characterized in that the threeway tube head has seal to contact with the seal cover switching, have the certain interval seal cover to be moved up and down by the screw rod push-and-pull between the tube wall of seal cover and threeway tube head, the other end has sluice cover.

A kind of combustion method of second-time burning smokeless and dust free efficient energy-saving furnace is characterized in that it has the following steps:

(1) with solid fuels such as coal, bavins in the burner hearth internal combustion, close coal flap and ash chute lid, simultaneously make an air feed toward burner hearth, allow fuel make imperfect combustion, add for the first time purpose heating things such as hot water, and produce the coal gas that contains carbon monoxide wait combustion product, enter gas pipe behind the filtration, purification;

(2) will go up step gained coal gas and introduce secondary combustion chamber, air feed is done second-time burning, will carry out post bake in the heater on the purpose heating thing introducing secondary combustion chamber of heating of last step, and the tail gas of second-time burning is drained from chimney;

(3) fuel consumes clean front opening coal filling hole and adds new coal in the burner hearth, after sealing, continues next periodic combustion, regularly opens ash-pit lid ash discharge.

Chimney chimney tube can be encircled further heat absorption by the bag chamber that is full of recirculated water.

The present invention adopts burning for the first time to heat separate space recirculated water in advance, the design and the combustion system of the further heat cycles water of coal gas burn for the second time, the characteristics that meet solid fuel ignition heat releases such as coal, fuel combustion is abundant, the release conduction of heat absorbs does not stay the dead angle, whole process is all passed to recirculated water to heat, the thermal efficiency is high, twice combustion all carries out in the combustion chamber of sealing, flue gas does not have and leaks outside, and through the filtration of tar and dust, the chimney tail gas discharged is dustless colourless, very cleaning is not polluted environment.The used blower power of the present invention is very little, wants little more than one times, easy to operate than tradition burning cauldron and steam boiler air blast, just adds once new coal in average 7-12 hour, and management cost is very low, and than existing hot water method and equipment, total coal saving rate is at 40-50%.Fuel collection Jiao fuel whether smoothly no matter.

Appended drawings 1 is the front view (broken section) of stove of the present invention.

Accompanying drawing 2 is left view (when removing gas pipe).

Accompanying drawing 3 is secondary combustion chamber front view (just analysing and observe).

Accompanying drawing 4 is coal gas lock front views (just analysing and observe).

The label of each parts is as follows among the figure:

1-ash-pit lid; 2-stove pin; The 3-ash collection slot; The 4-fire bars; Air feed pipe of 5-; The 6-air lock; The 7-circulating water inlet; The 8-shaft; The 9-coal filling hole; 10-coal flap; The 11-gas pipe; 12-coal gas lock; The 13-tube connector; 14-is controlled Jiao Zha; The 15-circulating water outlet pipe; 16-side separate space; The 17-filter screen; The 18-compartment; 19-gas purification chamber; The last separate space of 20-; The 21-burner hearth; 22-firepower switch; 23-secondary air feed lock; 24-secondary air feed pipe; The 25-chimney; The 26-secondary combustion chamber; The 27-heating kettle; The 28-secondary burner; The 29-kitchen sink; 30-coal gas lock seal cover; The 31-screw rod; The 32-handwheel; The 33-sluice cover.

The specific embodiment as shown in drawings, this example adopts horizontal type structure.Shaft (8) is a furnace shell that steel plate is made, portion has a columnar chamber to form burner hearth (21) by the place at the end within it, primary zone just, the bottom of chamber is fire bars (4), the below of fire bars is a sloping groove, be ash collection slot (3), its effect is to compile the dust that the combustion chamber falls, and clears up away so that regularly open ash-pit lid (1).Fire bars locate up and down pass side separate space (16) and insert an air feed pipe (5), this air feed pipe has air lock (6) control.

The part that becomes at the top of burner hearth semicircle top girth is gas purification chamber (19), and the place under has a filter screen (17) to stop the bulky grain thing to enter gas pipe slightly.In the gap of the periphery of burner hearth and napex and shaft side separate space and last separate space (20).When burner hearth is divided into several combustion chamber, can use compartment (18) to separate.Each separate space all interconnects, and links to each other with outlet pipe (15) with circulating water inlet (7), when burner hearth burning heat release, can heat water wherein.The gas purification chamber is communicated with gas pipe (11) through control Jiao Zha (14) and coal gas lock (12), is divided into some strands and confesses, and controls burnt lock and can remove many liquid Jiao's property impurity and moisture.Shaft is provided with coal filling hole (9) and coal flap (10).

This example is guided to secondary combustion chamber (26) to the flue gas of primary combustion by two secondary burners (28) refire time burning, by firepower switch (22), secondary air feed pipe (24) and secondary air lock (23) regulation and control firepower size.The coolant-temperature gage of heating has been raised to quite height for the first time, and heating kettle (27) heating of introducing this moment on the secondary combustion chamber not only saves time but also made full use of thermal source, has reduced waste.The gate valve that this example adopts, it is the gate valve that air lock (6), coal gas lock (12), control Jiao Zha (14), firepower switch (22) and secondary air feed lock (23) are same structure, all by a threeway tube head, seal cover (30), screw rod (31) and sluice cover (33) constitute, screw rod is twisted by handwheel (32), the drive seal cover moves up and down, and realizes switch.Between the tube wall of seal cover and threeway tube head certain interval is arranged.There is a tap hole below of control Jiao Zha, closes at ordinary times, opens during tapping.This two-cell heater is heated up water as certain bean curd factory traditional big iron pan of replacement and is bought bean curd, the workman of class Three takes turns to operate, rotated coal once in average 7-12 hour, can uninterruptedly produce, water consumption also has superfluous, calculates through long-term record, on average saves coal 43-51% than burning cauldron, chimney tail gas be can't see color, and the environmental protection evaluation index is fine.

Claims (9)

1, a kind of second-time burning smokeless and dust free efficient energy-saving furnace, it has shaft, fire bars, burner hearth, it is characterized in that burner hearth is in shaft, separate space is arranged between the two, separate space communicates with recirculated water turnover pipe, and burner hearth bottom has fire bars, and fire bars communicates with ash collection slot, furnace chamber is communicated with the shaft gas pipe for second-time burning outward, the coal filling hole of past burner hearth refuelling is housed on the shaft and gives an air feed pipe of burner hearth oxygen supply.

2, energy-conservation stove according to claim 1 is characterized in that burner hearth is separated into a plurality of combustion chambers, there is coal filling hole each combustion chamber, and coal flap switch is arranged.

3, energy-conservation stove according to claim 1 and 2 is characterized in that between a plurality of combustion chambers compartment being arranged.

4, energy-conservation stove according to claim 1 is characterized in that upper furnace is the gas purification chamber, and purifying the bottom, chamber has filter screen.

5, energy-conservation stove according to claim 1, the air feed point that it is characterized in that an air feed pipe above the fire bars, below or two sides up and down.

6, energy-conservation stove according to claim 1 is characterized in that the indoor burner of gas pipe and second-time burning is communicated with, and is connected to secondary air feed pipe that the top of burner is water bath or other heating container that is connected with circulating water outlet pipe.

7, a kind of gate valve, it has threeway tube head, screw rod seal cover and sluice cover, it is characterized in that straight-tube portion one end of threeway tube head has seal to contact with the seal cover switching, between the tube wall of seal cover and threeway tube head certain interval is arranged, seal cover is moved up and down by the screw rod push-and-pull, and the other end has sluice cover.

8, a kind of combustion method of second-time burning smokeless and dust free efficient energy-saving furnace is characterized in that it has the following steps:

(1) with solid fuels such as coal, bavins in the burner hearth internal combustion, close coal flap and ash chute lid, make an air feed toward burner hearth simultaneously, allow fuel make imperfect combustion and add purpose heating things such as hot water for the first time, and produce the coal gas that contains carbon monoxide wait combustion product, enter gas pipe behind the filtration, purification;

(2) will go up step gained coal gas and introduce secondary combustion chamber, air feed is done second-time burning, will carry out post bake in the heater on the purpose heating thing introducing secondary combustion chamber of heating of last step, and the tail gas of second-time burning is drained from chimney;

(3) fuel consumes clean front opening coal filling hole and adds new coal in the burner hearth, after sealing, continues next periodic combustion, regularly opens ash-pit lid ash discharge.

9, combustion method according to claim 8 is characterized in that chimney chimney tube encircles further heat absorption by the bag chamber that is full of recirculated water.

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