CN202002303U - Double-clapboard type constant-pressure environment-friendly energy-saving boiler capable of converting lignitous coal into gas - Google Patents

Abstract

A double-clapboard type constant-pressure environment-friendly energy-saving boiler capable of converting lignitous coal into gas converts lignitous coal into combustible mixture gas by a gasification method, realizes the purpose of utilizing the coal cleanly, and solves the problem of environmental pollution caused by direct burning of coal. In the boiler, the fuel gas and the gas production are combined, and the coal gas is used instantly when being produced, so that the boiler is environment-friendly and energy-saving. The boiler mainly comprises a quantitative air distribution system, a coal gas generating chamber, a coal gas burning chamber, a secondary air distribution burning chamber, a fire evening clapboard, a smoke convection area, a smoke splitting clapboard, a circulating water heating-exchanging area, a smoke recoverer, an air preheating system and the like. The coal gas enters the burning chamber for igniting with open fire through a coal gas ascending pipe and the secondary air distribution, and under the action of the secondary air distribution, the flame ascends in a rotating manner, the ascending flame is accelerated by passing through a columnar throat pipe, and enters a cold-hot convection area, and enters a burning-out chamber through the smoke splitting clapboard, and smoke is discharged through the air preheater.

Description

Two iris type normal pressure brown coal change compression ring and protect power economized boiler

(1) technical field

The utility model relates to a kind of small capacity double iris type normal pressure brown coal changes compression ring guarantor power economized boiler, the brown coal that particularly relate to low combustion value change into fuel gas, utilize the combining form of technical employing two body stoves in direct burning, coal gas is promptly to produce promptly to use, realized the secondary conversion of primary energy, made coal use technology and accomplish cleaning.

(2) background technology

China is a rich coal country, in the total, if with heat Calculation, coal is put 90% of combustible (comprising natural gas and oil) gross reserves approximately, energy consumption structure based on coal is difficult to change in a short time, has especially become the key factor of the restriction national economic development based on the pollution problem of fire coal.Reduce pollutant emission, focus on the technological innovation with energy, after all, energy-saving and emission-reduction just mean the growth that suppresses demand for energy.Solid coal is changed into the secondary air of cleaning, itself is exactly the effective rate of utilization that has improved coal, just can obtain with direct gasification, compare with the coal direct combustion, not only improve energy-saving efficiency, and significantly reduced the discharging of environmental contaminants, had good social benefit and environment protecting.

(3) summary of the invention

The main technical problems to be solved in the utility model: the one, coal is the fuel that solid has ash, especially the brown coal volatile matter is higher, the brown coal of low combustion value are become the gas material to it by direct gasification, under the condition of reasonable three air distributions, enter the combustion chamber through the coal tedge and carry out primary combustion, carry out second-time burning through four air distributions again, through twice air distribution burning, make fuel gas obtain abundant burning: the 2nd, one deck smoke baffle plate (9) and two layers of smoke baffle plate (5) have been formed with the upright water pipe in upper boiler hot water exchange area, following two high-temperature flue gas diffluence room are welded by the upright water pipe (8) of one deck smoke baffle plate and two layers of smoke baffle plate and hot water exchange; The 3rd, all air distributions of boiler have been realized the hot blast air distribution of coal gasification and gas-fired all through entering distribution plenum after the preheating of chimney interlayer.

The technical scheme that adopts is:

Two iris type normal pressure brown coal change compression ring and protect power economized boiler, comprise: the atmosphere cross over pipe, exhanst gas outlet, hanger, the water pipe upper perforated plate, two layers of smoke baffle plate, inner bag, housing, upright water pipe, one deck smoke baffle plate, the aditus laryngis water jacket, the water pipe lower perforated plate, awl tube overcoat, cover in the awl tube, base housing, the base flue, gas up take, the feedwater base, the blowdown base, support upright tube, bedplate, clean-out opening, gas generating chamber's fire grate, gas generating chamber's arch bar, water seal board, the combustion chamber stove grate, the water outlet base, the furnace roof end socket, two layers of cleaning door, one deck shoot door, four air distribution inlets, three air distribution inlets, secondary air distribution inlet, an air distribution inlet, gas generating chamber's fire door, the combustion chamber shoot door, parts such as combustion chamber fire door are welded.

Be divided into and independently go up lower water jacket two parts, be to carry out airtight with the special-purpose fire-resistant encapsulant between upper water sleeve and the lower water jacket, the top water jacket is made up of inner bag and shell end socket, the inner bag bottom is provided with flame reflection arch bar, weld with steel plate with interior cover bottom, the lower perforated plate of flame reflection arch bar and trunnion welds with steel plate, flame enters secondary combustion chamber through four air distributions of trunnion, under the effect of equal fiery plate, the flame that rises turns back to scatter to periphery and evenly enters the upright water pipe of the heat exchange zone outside, and equal fiery plate and flue gas shunting plate and convection bank are fixed with card.Convection tube and the welding of upper perforated plate lower perforated plate, high-temperature flue gas enter the middle low-temperature space of lower clapboard rapidly under the influence of atmospheric density size, the hot flue gas of rising is under the effect of split-flow baffles, and uniformly dispersing is realized effective utilization of heat energy at the standpipe periphery.After hot flue gas is utilized by secondary, enter the interior exhanst gas outlet of boiler and enter air preheater, discharge through flue again.Backwater enters gas generating chamber's water jacket samdwich by the bottom of boiler, and bottom water jacket samdwich and the upright water pipe that enters boiler through the aditus laryngis water jacket heats again, is sent to the user by the boiler discharging tube seat then.

The bottom water jacket is welded with steel plate by bottom shell and bottom inner bag, is provided with stove skirt and base in the bottom of bottom water jacket, and the bottom of inner bag is provided with fire grate.Be provided with one time air distribution in the fire grate bottom, in skirt, be provided with the coal gas enclosed baffle in the cover, be provided with the secondary wind distributing hole in the middle of coal gas enclosed baffle and the fire grate, be provided with the coal gas guide pipe at the enclosed baffle periphery, be provided with air distribution three times at coal gas guide pipe periphery, be provided with blowoff valve and hand hole, be provided with in the bottom of boiler and add coal stove door in the bottom of shell, be provided with the little fire door of ash disposal at the middle part, top is provided with igniting and adds coal stove door.

The two iris type normal pressure brown coal of the utility model change compression ring guarantor power economized boiler and are divided into boiler wind speed adjustment, gas generating chamber's air distribution is evenly supplied with (i.e. air distribution) from skirt periphery wind distributing hole, the secondary air distribution is supplied with igniting combustion supporting, three air distributions provide sufficient amount of oxygen for the coal gas that enters the combustion chamber, and are in addition combustion-supporting.Four times air distribution is the second-time burning air distribution at the trunnion place of boiler.

Two iris type normal pressure brown coal change the system gas heating principle that compression ring is protected power economized boiler, are that the air of air distribution enters air compartment by smoke-gas preheater, pass through air distribution valve timing air distribution according to the difference requirement of four air distributions.By once providing air distribution to gas generating chamber, promote that oxidation reaction takes place brown coal in combustion process, produce carbon dioxide, emit heat simultaneously.Carbon dioxide is under the situation of anoxic, produce reduction reaction with high temperature coal, absorb heat simultaneously, produce carbonic oxide, fuel gas such as oxygen, keep successive reaction through an oxidation reaction liberated heat part, another one is absorbed by the aqueous medium in the water jacket of boiler bottom, and circulating water temperature is raise, and the coal gas that gas generating chamber produces enters the combustion chamber through the coal gas guide pipe, the chance naked light is lighted, the flame that rises returns through arch bar and forms the spiral flame column that rises, and through the cylindricality trunnion, has improved the flow velocity of rising flame under four air distribution situations, carry out second-time burning, the flame that rises is used equal fire screen plate, and flame is catadioptric once more, and evenly enters the exchange area.

The recirculated water heating is divided into two parts: first's water is the heat that absorbs gas generating chamber's coal gas oxidation reaction liberated heat and combustion chamber gas-fired generation at the bottom water jacket, and the second portion heating is the heat that absorbs coal gas burning chamber and convection tube heat exchange.

The boiler blow-down water system is two backhaul designs, that is: system's backwater is at first got back to gas generating chamber water jacket samdwich bottom enters into boiler again by cross over pipe bottom, is sent to the user through the water outlet base then.

The two iris type normal pressure brown coal of the utility model change compression ring, and to protect the required raw material of power economized boiler be brown coal, and coal can use for 3-4 hour, has that heat capacity is strong, quick heating, in being fit to disperse to warm oneself, small enterprise, and Home Heating and bathing.Boiler replenishing water adopts demineralized water, and what the boiler distribution adopted is up-to-date beepbox, and coal gas is promptly to produce advantages such as i.e. usefulness, safety, convenience, energy-conserving and environment-protective.

(4) description of drawings

Fig. 1 is the front view of utility model, and Fig. 2 is a left view of the present utility model.

(5) specific embodiment

Two iris type normal pressure brown coal change compression ring and protect power economized boiler, and the contrast accompanying drawing describes in detail and comprises: atmosphere cross over pipe (1), exhanst gas outlet (2), hanger (3), water pipe upper perforated plate (4), two layers of smoke baffle plate (5), inner bag (6), housing (7,) upright water pipe (8), one deck smoke baffle plate (9), aditus laryngis water jacket (10), water pipe lower perforated plate (11), awl tube overcoat (12), cover (13) in the awl tube, base housing (14), base flue (15) gas up take (16), feedwater base (17), support upright tube (18), bedplate (19), clean-out opening (20), gas generating chamber's fire grate (21), gas generating chamber's arch bar (22), water seal board (23), combustion chamber stove grate (24), water outlet base (25), furnace roof end socket (26), two layers of shoot door (27), one deck shoot door (28), four air distribution inlets (29), three air distribution inlets (30), secondary air distribution inlet (31), an air distribution inlet (32), gas generating chamber's fire door (33), combustion chamber shoot door (34), combustion chamber fire door compositions such as (35).The hot-water boiler on top and lower coal gas producer are to be welded with steel plate by housing (7) and inner bag (6), upright water pipe (8), furnace roof end socket (26), one deck smoke baffle plate (9) and two layers of smoke baffle plate (5) etc.Whole air distribution is divided into four times; Promptly an air distribution (32) is gas generating chamber's air distribution; Secondary air distribution (31) is an ignition furnace grate air distribution; Three air distributions (30) are the combustion chamber air distribution with gas up take synchronously; Four air distributions (29) are coal gas second-time burning air distribution.The gas generator part is by base (19), support upright tube (18), base housing (14), base flue (15), gas generating chamber's arch bar (22), water seal board (23), cover (13) in awl tube overcoat (12) the awl tube, gas up take (16) is welded with expanded metal lath coiled sheet system, be provided with an air distribution inlet (32) and feedwater base (17) in the bottom of base, on an air distribution inlet, be provided with gas generating chamber's fire grate (21), be provided with gas generating chamber's fire door (33) in the bottom of base housing (14), be provided with combustion chamber shoot door (34) at the middle part, be provided with combustion chamber fire door (35) on top and be provided with four air distributions (29) and one deck shoot door (28), be provided with two layers of shoot door (27) on the top of boiler on the top of awl tube overcoat (13), be provided with atmosphere cross over pipe (1) and exhanst gas outlet (2) and water outlet base (25) at the top of boiler.

Claims (3)

1. two iris type normal pressure brown coal change compression ring and protect power economized boiler, comprise atmosphere cross over pipe (1), exhanst gas outlet (2), hanger (3), water pipe upper perforated plate (4), two layers of smoke baffle plate (5), inner bag (6), housing (7), upright water pipe (8), one deck smoke baffle plate (9), aditus laryngis water jacket (10), water pipe lower perforated plate (11), awl tube overcoat (12), cover (13) in the awl tube, base housing (14), base flue (15), gas up take (16), feedwater base (17), support upright tube (18), bedplate (19), clean-out opening (20), gas generating chamber's fire grate (21), gas generating chamber's arch bar (22), water seal board (23), combustion chamber stove grate (24), water outlet base (25), furnace roof end socket (26), two layers of shoot door (27), one deck shoot door (28), four air distribution inlets (29), three air distribution inlets (30), secondary air distribution inlet (31), an air distribution inlet (32), gas generating chamber's fire door (33), combustion chamber shoot door (34), combustion chamber fire door (35).

2. according to claim 1 pair of iris type normal pressure brown coal change compression ring and protect power economized boiler, it is characterized in that: one, two layers of smoke baffle plate are welded with upright water pipe (8), form two sweep of gases chambers, the flue gas that rises is discharged by twice total brush back, prolong flue gas flow, improved flue gas available heat utilization rate.

3. according to claim 1 pair of iris type normal pressure brown coal change compression ring and protect power economized boiler, it is characterized in that: the outside at awl tube overcoat (12) corresponding one deck smoke baffle plates (9) and two layers of smoke baffle plate (5) is respectively equipped with shoot door (28,27), has guaranteed the clean ash work of the normal operation of boiler.

Images