CN205383595U

CN205383595U - Novel energy -efficient horizontal gas -solid double fuel environmental protection boiler

Info

Publication number: CN205383595U
Application number: CN201520484595.2U
Authority: CN
Inventors: 刘俊杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-01
Filing date: 2015-07-01
Publication date: 2016-07-13
Anticipated expiration: 2025-07-01

Abstract

The utility model provides a novel energy -efficient horizontal gas -solid double fuel environmental protection boiler, including last next part case, go up the lower drum, the both sides water -cooling wall, middle water -cooling wall, the convection bank, nozzle install hole etc, the boiler furnace structure adopts the compatible double combustion chamber's design of gas -solid fuel, the combustion system solid diphase burning new technology of coal gas and two kinds of fuel of burning generating set heating gas structural design that independently burns that adopt to loose, every kind of fuel homoenergetic independently burns, fuel is through once burning afterwards in the main room of firing, flame gets into the postcombustion room through the anterior flame passageway of water -cooling wall in the middle of the combustion chamber and carries out the burning of secondary air distribution, high temperature flue gas after the burning passes through the flue and gets into the convection bank, pass through behind the heat convection of three return stroke in the convection bank, low temperature flue gas atmospheric dilution, the single problem of boiler fuel has been solved in the double fuel design of this product, two room design improvement boiler combustion and operation thermals efficiency of firing.

Description

A kind of horizontal gas-solid double-fuel environmental protecting hot-water boiler of novel high-efficiency and energy-saving

One, technical field

This utility model belongs to combustion heat coal gas special equipment and the combined high-efficiency energy-saving environment-friendly hot water boiler of the solid two kinds of fuel compatibilities of two-phase burning of scattered coal gas, solves the restriction that boiler oil is single, expands the free scope of user's fuel.

Two, background technology

Industry coal-boiler ubiquity undercapacity, over-emitting black exhaust, the situation that the thermal efficiency is low, in order to improve the thermal efficiency of industrial combustion boiler and reduce smoke pollution discharge two large problems, State Council holds standing meeting before this, clearly propose to accelerate to eliminate old poor efficiency boiler, promote coal-burning boiler energy-saving Environmental Protection Level.Then, Chinese Ministry of Environmental Protection passes " emission standard of air pollutants for boilers " of new revision in principle and implements in July, 2015, by the world, this is called that emission standard of air pollutants for boilers the tightest up to now has caused boiler manfacturing industry to shock.Compared with working standard, new standard has not only revised the emission limit of traditional particulate matter and sulfur dioxide, also propose the emission control standard of nitrogen oxides and hydrargyrum first, allow manufacturing enterprise have to carry out technology upgrading, from source, control the discharge of boiler atmosphere pollution.

Producer gas be a kind of high-quality, efficiently, the gaseous fuel of cleaning, coal gas is adopted to replace directly coal-fired, fuel as boiler, the pollution to environment can be greatly reduced, this is because the ash of combustion gas, sulfur content and nitrogen content are all coal-fired low than directly, in the flue gas produced after burning, Dust Capacity is few, sulfur and nitrogen oxide are also fewer, easily reach country's standard to combustion apparatus fume emission, therefore, the feature that novel energy-saving high-efficiency gas-solid double-fuel environmental protecting hot-water boiler highlights with its high-quality and efficient environmental benefit, the deep favorable comment by user.

Three, summary of the invention

A kind of horizontal gas-solid double-fuel environmental protecting hot-water boiler of novel high-efficiency and energy-saving, adopt the design form that the solid two-phase combustion technology of burning producer heating gas and scattered coal gas combines, achieve two kinds of fuel all can independent burning, use send out stove heating gas time, it is possible to gas generator combination application one to one.With the producer heating gas that burns for main fuel, when gas generator breaks down, boiler can use the solid two-phase burning of scattered coal gas instead, namely the hot strengthening cracking of boiler high temperature is utilized, the flammable volatile matter (coal gas) being easily generated soot in coal is sufficiently mixed with air, form high temperature " gas " phase body, " solid " on phase body semicoke injection two-phase burn, can the desirable purpose of clean combustion thus reaching two kinds of fuel.The design of a draining cold wall is set up between utilizing in a combustion chamber, one integral combustion room is divided into and is divided into two, mainly strengthen fuel secondary air distribution and burn effect, set up middle water screen to be also beneficial to expand fuel combustion radiation heat transfer area simultaneously, this New-type boiler structural design, fuel economy can be improved, also improve radiant heat transfer effect simultaneously, it is achieved that the variation of hot-water boiler available fuel clean combustion.

This utility model solves its technical problem and be the technical scheme is that this boiler adopts double combustion chamber's design, a draining cold wall pipe is added in the middle of whole combustor, whole combustor is divided into two, form two combustor, bend at lower end 1/3 place of middle water screen pipe and be connected with left side lower header, form the alpha-angle of a main combustion chamber, leave into fire hole in the middle upper end of middle water screen pipe, remainder is all shut with refractory cement, the inclined-plane making alpha-angle forms a flame refraction arch, fixed grate it is provided with bottom main combustion chamber, on the left of boiler or the upper end of right side water screen tube and lower header junction be provided with two main chamber nozzles, left side or right side water screen tube are arranged over subsidiary combustion chamber nozzle.

The beneficial effects of the utility model are: this product has efficiently compared with coal-burned industrial boiler, energy-saving and environmental protection feature, it is achieved that dissipate the solid two-phase clean combustion of coal gas and utilize the man-to-man docking of gas generator to use, having reached the purpose of coal conversion.

Four, accompanying drawing explanation

Fig. 1, for front view of the present utility model

Fig. 2 is side view of the present utility model

Fig. 3 is attached view of the present utility model

Five, detailed description of the invention

nullThe upper end of upper collecting chamber (1) is provided with installation suspension ring (2) in FIG，Other end is inserted with upper drum (4) punching and is welded，It is provided with atmospheric communicating pipe (3) in the upper end of upper drum (4)，The both sides of upper collecting chamber (1) are inserted with the top punching of (24) in two side water wall tubes (14) and Fig. 2 respectively and are welded，The following of (24) in water screen tube (14) and Fig. 2 is punched to insert with (24) lower header in (12) and Fig. 2 respectively and is welded，Two burner noz(zle) mounting seats (13) it are respectively kept with in the top of left side water screen tube (14) and lower header (12)，It is provided with convection bank (5) in the centre of upper drum (4) and lower drum (7)，Punch to insert with upper drum (4) and lower drum (7) respectively and weld in two of convection bank (5)，Side at lower drum (7) is provided with blow-off pipe (8)，Lower drum dust collecting box is provided with ash removing opening (9)，It is formed around firebrick wall (15) at boiler，And boiler top outer in furnace wall surrounding has added heat-insulation layer (16)，It is surrounded by iron sheet (17) in the periphery of heat-insulation layer (16)，In order to realize dissipating the solid two-phase clean combustion of coal gas，It is provided with fixed grate (11) in the bottom of main chamber (27) in figure 3，Fire door (10) it is provided with in the front of combustor.

nullIn fig. 2，In order to improve fuel economy and increase the burning radiation thermal efficiency，A draining cold wall pipe (20) it is additionally arranged between in a combustion chamber，Combustor is divided into 2/1sts，Bending at middle and lower part 1/3 place of middle water screen pipe (20) punches to insert with (12) in the lower header Fig. 1 of left side welds，Combustor is made to be divided into (27) in a main chamber Fig. 3 and (29) in a subsidiary combustion chamber Fig. 3，Middle water screen pipe (20) forms an alpha-angle (19) with (12) junction in lower header Fig. 1 and the fixed grate (11) in Fig. 1，Middle water screen pipe (20) bend place inclined-plane (23) formed a flame combustion refraction arch，When gas is by burner noz(zle) (25) spray combustion，Flame direct-injection is bended on the inclined-plane (23) located to middle water screen pipe，Flame is folded back，(29) that combustion gas is entered in subsidiary combustion chamber Fig. 3 by (28) exhaust gases passes in Fig. 3 by high-temperature flue gas behind (27) in main combustion chamber Fig. 3 for the first time burning carry out second-time burning when secondary air distribution and a small amount of gas of supply by burner noz(zle) (21).When being changed into solid fuel by gas, provide solid fuel air distribution by wind distributing hole (26), thus realizing individually burning and the gas-solid mixed combustion of gas, solid fuel.

Fuel is through entering subsidiary combustion chamber (29) at main combustion chamber (27) by exhaust gases passes (28) in figure 3, second-time burning is carried out in fig. 2 under (21) secondary air distribution and supply, high-temperature flue gas after burning enters (5) in convection bank Fig. 1 through flue (30), being provided with twice smoke baffle plate (31,32) high-temperature flue gas between (5) in convection bank Fig. 1 and carry out the heat convection of two backhauls under the effect of smoke baffle plate (31,32), (6) in Fig. 1 of the flue gas after heat exchange are discharged.

Claims

1. the horizontal gas-solid double-fuel environmental protecting hot-water boiler of novel high-efficiency and energy-saving, including double combustion chamber, upper lower drum, upper collecting chamber and left and right lower header, combustion heat jet for gas, two side walls, middle water screen, convection bank, boiler structure, it is characterized in that: this boiler adopts double combustion chamber's design, a draining cold wall is added in the centre of whole combustor, whole combustor is divided into two, form two combustor, bend at lower end 1/3 place of middle water screen pipe and be connected with left side lower header, form the alpha-angle of a main combustion chamber, leave into fire hole in the middle upper end of middle water screen pipe, remainder is all shut with refractory cement, the inclined-plane making alpha-angle forms a flame refraction arch.

2. a kind of horizontal gas-solid double-fuel environmental protecting hot-water boiler of novel high-efficiency and energy-saving according to claim 1, it is characterised in that: double combustion chamber designs, and is divided into main chamber (27) and subsidiary combustion chamber (29).

3. a kind of horizontal gas-solid double-fuel environmental protecting hot-water boiler of novel high-efficiency and energy-saving according to claim 1, it is characterized in that: in main chamber (27), be provided with fixed grate (11), can independent burning solid biomass fuel, can individually use producer heating gas with gas generator docking again.