A kind of heat conducting oil boiler of biomass burning gas
The utility model relates to heat conducting oil boiler field more particularly to a kind of heat conducting oil boilers of biomass burning gas.
Heat conducting oil boiler refers to the boiler using conduction oil as a heat transfer medium.Conduction oil, also known as organic heat carrier or heat
Medium Oil.Heat conducting oil boiler is generally using coal, oil, gas as fuel, using conduction oil as medium, utilizes hot-oil circulation oil pump forced medium
Liquid phase circulation is carried out, thermal energy is conveyed to and returns again to heating furnace after heating equipment and reheats.
Under the background that national environmental protection policy is increasingly stringenter, environmental emission standard is stepped up, traditional with coal, combustion
Oil etc. has been extremely difficult to the environment protection emission requirement that various regions constantly upgrade as the Industrial Boiler of fuel.And use natural steam pot instead
Furnace one side energy cost is multiplied, and enterprise is difficult to undertake；On the other hand some enterprise present positions without pipe natural gas just
Nearly supply, can not use natural gas boiler, it has to seek other feasible environment-protecting clean energy.And biomass energy becomes naturally
Compare the feasible alternative energy accepted.The primary raw material source of biomass energy be agriculture and forestry organic waste material, furniture building materials waste material and
Building template waste, according to newest environmentally friendly code requirement, it is not possible to directly burn or be processed into biomass moulding
Grain or use gasification technology are converted to flammable biogas, make fuel to Industrial Boiler.
Biogas is equal for its environmental emission standard of Industrial Boiler fuel with natural gas boiler as clean energy resource.
As long as the blackness of boiler smoke discharge, dust, SO2, NOx etc. refer to using specially designed gas fired-boiler come biomass burning gas
Mark fully achieves the same clean level of natural gas.The especially biggish user of Energy Load, using gasification furnace+biomass
Gas boiler United Technologies first pass through gasification furnace and generate biogas, then send to boiler and make fuel, and the energy cost of combined operating is not
It is only far below natural gas, or even also low more many than biological particles, environment protection emission is even more to be significantly better than to fire with biological particles
The Industrial Boiler of material.
Common gas fired-boiler is designed according to the fuelled with natural gas of high heating value, and biomass burning gas is used to, first
First power output will reduce very much, and boiler thermal efficiency is lower.Because biogas calorific value is low, the only 1/8-1/6 of natural gas, air distribution
It is bad, it is difficult to after-flame, stability is again poor when thermic load is lower, it is therefore necessary to according to biogas at being grouped as and burn
The data such as characteristic can guarantee that combustion thermal efficiency is higher to be specifically designed boiler, clean emission while clean combustion.
Utility model content
The purpose of the utility model is to provide a kind of heat conducting oil boilers of biomass burning gas, can be using biogas as combustion
The gas fired-boiler of material, as a heat transfer medium with conduction oil, the thermal efficiency is high, environmental clean and disposal of pollutants is extremely low.
To achieve the above object, the utility model provides a kind of heat conducting oil boiler of biomass burning gas, including upper and lower cloth
The boiler body set and combustion chamber, the gas inlet end of the combustion chamber are equipped with the combustor of biogas, the flue gas of combustion chamber
Outlet side is connected to boiler body flue gas inlet end；The inner cavity of combustion chamber is equipped at least one first bending along gas flow and leads to
Road, wall is equipped with after-flame duct collar corresponding with the first bent passage behind combustion chamber；The intracavity sidewall of the boiler body is set
There is conduction oil coil pipe, boiler body is equipped with the inlet and outlet of conduction oil coil pipe；The tail end of boiler body is equipped with smoke outlet.
The boiler body includes the upper body being spliced up and down and lower as a further improvement of the utility model,
The intracavity sidewall of body, upper body and lower body is equipped with conduction oil coil pipe, the conduction oil coil pipe of both upper body and lower body it
Between pass through communicating pipe connect.
As the further improvement of the utility model, the tail end of the boiler body is connected with ash cellar, the bottom of ash cellar
It is connected with ash tube.
As the further improvement of the utility model, the bending angle of first bent passage is 180 degree.
As the further improvement of the utility model, the flue in the boiler body includes a plurality of be sequentially communicated
Two bent passages.
As the further improvement of the utility model, the side wall of the combustion chamber and boiler body back-end ductwork side are set
There is maintenance shoot door.
As the further improvement of the utility model, the combustion chamber is the adiabatic combustion that heat insulating refractory material pours
Room comprising steelframe and the heat insulating refractory material being coated in steelframe.
As the further improvement of the utility model, the side wall of the combustion chamber is equipped with explosion proof door.
Compared with prior art, the advantages of the heat conducting oil boiler of the biomass burning gas of the utility model are as follows:
1, a kind of heat conducting oil boiler for making fuel with biogas is provided, the inner cavity of combustion chamber is equipped at least along gas flow
One the first bent passage extends the movement routine of biogas in the combustion chamber, that is, extends it and stop in the combustion chamber
With the time of burning.It is two return structure in combustion chamber when the first bent passage is one.Meanwhile after-flame duct collar to
Supplemental oxygen in combustion chamber.Since biogas calorific value is low, the consumption for generating the heat combustion gas of same amount is the 6~8 of natural gas
Times, it is therefore necessary to there are the sufficiently large bags and enough amount of oxygen, just can ensure that calorific value as biogas is lower
Fuel gas full combustion.And the heat conducting oil boiler of the biomass burning gas, being tested the boiler thermal efficiency obtained is
92.56%, the thermal efficiency is high, the extremely low load adaptability of environmental clean and disposal of pollutants is wide, load adjustment ability is high.
2, the heat conducting oil boiler of biomass burning gas uses the structural shape of " pot " " furnace " separation, the part as " furnace "
Combustion chamber is in lower part, and the lower body and upper body of the part as " pot " are in top, such structural shape advantage: 1, combustion chamber
Surrounding facilitates Combustion System, it can be ensured that combustion chamber remains higher temperature without the heat exchange such as water-cooling wall；2, as " pot "
Partial boiler lower body, upper body can be prefabricated in the factory self-contained, it is ensured that manufacturing quality；3, boiler body is divided into two up and down
Point, reduce high wide size, convenient transportation.
3, using adiabatic furnace Technology design boiler furnace, combustion chamber is the adiabatic combustion that heat insulating refractory material pours
Room, combustion chamber steelframe can on-site assembly, combustion chamber scene build casting.
4, the flying dust for being deposited on ash cellar is periodically discharged by ash tube, avoids boiler body tail end caused by the flying dust because of deposition
Smoke outlet blocking and make flue gas residence in boiler body.
Through the following description and in conjunction with the attached drawings, the utility model will become more fully apparent, these attached drawings are for explaining this
The embodiment of utility model.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the heat conducting oil boiler structural schematic diagram of biomass burning gas.
The embodiments of the present invention are described referring now to the drawings.
Specific embodiment of the present utility model is including upper as shown in Figure 1, a kind of heat conducting oil boiler of biomass burning gas
The boiler body of lower arrangement and combustion chamber 1, the gas inlet end of combustion chamber 1 are equipped with the combustor 4 of biogas, combustion chamber 1
Flue gas outlet side is connected to boiler body flue gas inlet end.It is first curved that the inner cavity of combustion chamber 1 along gas flow is equipped at least one
Roll over channel 14.In the present embodiment, the quantity of the first bent passage 14 is one, and bending angle is 180 degree, no need to increase combustions
Under the premise of burning 1 size of room, its inner space is utilized to greatest extent, extends stop and combustion of the biogas in combustion chamber 1
Burn the time.A horizontally disposed chimney arch is equipped in the middle part of 1 inner cavity of combustion chamber, combustion chamber 1 is divided into upper layer and lower layer, and chimney arch by chimney arch
Back edge and wall behind 1 tail portion of combustion chamber are spaced, which constitutes the first bent passage 14.Combustor 4 is mounted on combustion chamber 1
On the furnace wall of lower layer front end.Biogas burns in 1 lower layer of combustion chamber, then enters combustion chamber 1 by the first bent passage 14
Wall is equipped with after-flame duct collar 8 corresponding with the first bent passage 14 behind combustion chamber 1.The lumen side of boiler body
Wall is covered with conduction oil coil pipe 15, and boiler body is equipped with the import 5 and outlet 6 of conduction oil coil pipe 15；The tail end of boiler body is set
There is smoke outlet 12.
Boiler body includes the upper body 3 and lower body 2 being spliced up and down.The front top and pot on 1 upper layer of combustion chamber
2 bottom of lower body of furnace body is connected.The intracavity sidewall of upper body 3 and lower body 2 is equipped with conduction oil coil pipe 15, upper body
By connecting communicating pipe 11 between 3 and the conduction oil coil pipe 15 of 2 the two of lower body, it is ensured that thermal conductive oil pipeline circulation.Thermally conductive food tray
The import 5 of pipe 15 is located in lower body 2, and outlet 6 is located in upper body 3.
The tail end lower part of boiler body is connected with ash cellar 9, and the bottom of ash cellar 9 is connected with ash tube 10.It is deposited on ash cellar 9
Flying dust is periodically discharged by ash tube 10.The side wall of combustion chamber 1 and boiler body back-end ductwork side are equipped with maintenance shoot door 7.
Flue in boiler body includes a plurality of the second bent passage being sequentially communicated.In the present embodiment, in boiler body
Extend vertically equipped with muti-piece and the partition wall of mutually horizontally spaced arrangement, the top edge of each partition wall or lower edge and boiler sheet
There are gap, the gaps to constitute the second bent passage for internal wall.Allow flue gas in boiler sheet by the way that a plurality of second bent passage is arranged
Internal residence time is long, allows the conduction oil in flue gas and conduction oil coil pipe 15 sufficiently to carry out heat exchange, improves boiler thermal efficiency.
At runtime, biogas sprays into combustion chamber 1 by combustor 4 to this heat conducting oil boiler.Biogas combustor 4 can
Using the structure similar with natural gas combustion engine, internal structure is divided into blast tube and air duct, and combustion gas enters combustion chamber
Ignition forms swirl flame immediately, the cyclone disk of combustor 4 by biogas and oxygen be mixed as far as possible uniformly with
Ensure fuel gas full combustion.4 furnace cavity of combustor is sufficiently large, to accommodate more combustion gas completely burneds as far as possible.This
The gas fired-boiler combustion chamber of utility model is according to GBT 34912-2017 " industrial boiler system energy-saving design guide " code requirement
Design, Aspect Ratio are coordinated, it is ensured that flame degree of filling is higher when biogas burns, and chamber temperature field distribution is more uniform, can
To ensure that chamber temperature is higher and stablizes.
By in this present embodiment, the quantity of the first bent passage 14 is one, i.e., combustion chamber 1 is two return structure.And it gives birth to
After substance gas mixes in combustor 4 with air progress first time, in combustion chamber, 1 lower layer burns, from the first bent passage
During 14 enter 1 upper layer of combustion chamber, by the after-flame duct collar 8 positioned at wall after the first bent passage 14 to biogas
Carry out tonifying Qi, biogas can be burnt away on 1 upper layer of combustion chamber, with ensure in biogas the first backhaul (lower layer) not
The further full combustions of components such as the higher CO of burning point of energy completely burned.High-temperature flue gas by 1 second backhaul of combustion chamber (on
Layer) enter boiler body afterwards, successively after three sections of radiation heating-surfaces and three sections of convection heating surfaces, flue gas is by 2 tail portion of lower body
Boiler is discharged in smoke outlet 12.In the boiler body that radiation heating-surface and convection heating surface form, flue gas and conduction oil coil pipe 15
In conduction oil sufficiently exchange heat, heat-conducting oil heating to set temperature, then into the further Mist heat recovering of air preheater.
Combustion chamber 1 is the insulated combustion chamber that heat insulating refractory material pours comprising steelframe and the heat preservation being coated on outside steelframe
Refractory material.The side wall of combustion chamber 1 is equipped with explosion proof door 13.
The structural shape that the heat conducting oil boiler of the biomass burning gas of the utility model is separated using " pot " " furnace ", as
The combustion chamber 1 of the part of " furnace " is in lower part, and 2 lower bodies of the part as " pot ", upper body 3 are in top, such structural type
Formula advantage: 1, it combustion chamber 1 around without water-cooling wall etc. exchanges heat, facilitates Combustion System, it can be ensured that combustion chamber 1 remains higher
Temperature；2, as " pot " part boiler lower body 2 and upper body 3 can be prefabricated in the factory it is self-contained, it is ensured that manufacturing quality；3,
Boiler body is divide into upper part and lower part, and reduces high wide size, convenient transportation；4, the structural shape of boiler body uses traditional disk
Pipe structure greatly reduces manufacture difficulty and construction and installation difficulty, integrated structure as common common heat conducting oil boiler
Decrease construction and installation workload.
The heat conducting oil boiler of the biomass burning gas, boiler thermal efficiency 92.56%.O at smoke evacuation2When being 2.89%,
CO is 0.01%, H2For 0.00%, H2S is 0.00%, CmHm 0.00%.Therefore, the heat conducting oil boiler of the biomass burning gas
The thermal efficiency is high, environmental clean, disposal of pollutants is extremely low.
Combine most preferred embodiment that the utility model is described above, but the utility model is not limited to above take off
The embodiment shown, and modification, equivalent combinations that various essence according to the present utility model carry out should be covered.