WO2016206431A1 - Brûleur utilisé pour chauffe-eau industriel à biomasse-gaz - Google Patents

Brûleur utilisé pour chauffe-eau industriel à biomasse-gaz Download PDF

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Publication number
WO2016206431A1
WO2016206431A1 PCT/CN2016/077768 CN2016077768W WO2016206431A1 WO 2016206431 A1 WO2016206431 A1 WO 2016206431A1 CN 2016077768 W CN2016077768 W CN 2016077768W WO 2016206431 A1 WO2016206431 A1 WO 2016206431A1
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Prior art keywords
gas
ignition
biomass
burner
pipe
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PCT/CN2016/077768
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English (en)
Chinese (zh)
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刘洋
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刘洋
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Publication of WO2016206431A1 publication Critical patent/WO2016206431A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/66—Preheating the combustion air or gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/007—Mixing tubes, air supply regulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/21—Burners specially adapted for a particular use
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Definitions

  • the present invention relates to a burner for a water heater, and more particularly to a burner for a biomass gas industrial water heater.
  • the waste pyrolysis treatment technology has attracted more and more people's attention. Especially for municipal solid wastes with high content of kitchen waste, plastics and rubber, the pyrolysis and gasification process can show more value. Due to the large number of municipal solid waste components, the pyrolysis gasification process is quite complicated. In the process of pyrolysis gasification, both macromolecules are cleaved into small molecules, and small molecules are polymerized into larger molecules.
  • Pyrolysis gasification (or simply pyrolysis or gasification) has several advantages, mainly as follows: (1) High combustion efficiency. Because the direct combustion of garbage is a non-homogeneous reaction of gas and solid, garbage as a solid substance has very poor diffusion and miscibility, so the combustion efficiency is low, and toxic and harmful substances are easily generated during combustion; and the gaseous products produced by pyrolysis and Tar, which is homogeneous combustion, has sufficient combustion and high efficiency; (2) The combustion process is easy to control, the composition of garbage is complex, and the physical and chemical properties of each component vary greatly. If directly burned, the ignition point and reaction speed of each component are very different.
  • biomass gas water heaters are mainly aimed at gasification of conventional biomass (such as straw) or domestic waste.
  • biomass gas produced by construction waste usually contains high acid gas, which can cause corrosion to the water heater and high impurity content, which is often insufficiently burned in conventional water heaters, resulting in serious exhaust pollution.
  • CN102635932A discloses a water heater comprising a gas heating portion, characterized by further comprising an air flow driving portion and a gas power portion, wherein the gas power portion provides power to the air flow driving portion, and the air flow driving portion is disposed at any of the following positions One or more places: the inlet duct of the gas heating section, the inlet of the gas heating section, and the exhaust section of the gas heating section.
  • CN104101093A discloses a gas water heater comprising: a casing, a face shell and a decorative panel.
  • the front side of the casing is open to form an opening, and the face shell is disposed on the casing to close the casing.
  • the face casing includes a fitting portion and a projecting portion, and the fitting portion cooperates with the opening, and the projecting portion extends downward from the lower surface of the fitting portion.
  • a trim panel snap is attached to the rear surface of the extension.
  • CN201069250U discloses a low calorific value biomass gas atmospheric pressure volumetric water heater, comprising a casing, a partition in the casing dividing the casing into a lower combustion chamber and an upper water storage tank, the combustion chamber and the burner are arranged in the combustion chamber
  • the connected automatic ignition and flameout protection device is a gas valve installed on the gas inlet pipe connected to the burner.
  • the lower part of the water storage tank is provided with a cold water inlet and a hot water outlet, and the upper part has a smoke chamber, and the exhaust pipe is connected with the flue gas chamber.
  • the casing is provided with an exhaust valve communicating with the water storage tank, and the heat exchanger disposed in the water storage tank is in communication with the combustion chamber, and the cold water inlet of the water storage tank is connected with an automatic water supply device through the water inlet pipe.
  • CN203349309U discloses a straw biomass raw material gas furnace, wherein the furnace body is composed of upper and lower furnace bodies, and the structure of the lower furnace body is two layers inside and outside, and the middle part is provided with heat insulating material, and the bottom part of the lower furnace body is equipped with air distribution.
  • the tray is connected to the air supply duct under the air distribution disc, and the other end of the air supply duct is equipped with a fan.
  • the upper part of the lower furnace body is provided with an upper furnace body, and the outer shell of the upper furnace body is a three-layer structure inside and outside, wherein the inner layer is insulated.
  • the top layer of the upper furnace body is a sealed end cover, and a purifier is installed at the rear of the upper furnace body, and three output tubes are arranged on the side of the purifier, respectively connected to the heating furnace, the cooking stove and the water heater; the characteristic is: the upper furnace body 10 partition plates are arranged in the middle of the inner and outer layers to form the upper and lower curved air passages, and the outer layer of the upper furnace body is isolated. There are 5 drain pipes in the corresponding space of the board space, and the drain pipe is equipped with a valve.
  • CN201297705U discloses a solar biomass biogas heat system, comprising a biogas generating tank and a solar collector, wherein the biogas generating tank is connected with a biogas pipeline, wherein the biogas generating tank comprises a tank body, a bottom cover and an upper part. Cover, the solar collector is connected with a cold water inlet pipe, a hot water outlet pipe, the hot water outlet pipe is coiled on the outer wall of the tank body and connected to the hot water storage tank, and the end of the biogas pipeline is connected There is a gas water heater and a gas stove, and the water outlet of the gas water heater is respectively connected to the shower head and the hot water storage tank, and the water outlet of the hot water storage tank is connected to the hot water end of the user.
  • CN202813788U discloses a gas water heater, which comprises a circulation pipeline, a water pump and a throttling device to form a pressurized circulation system, so that the water outlet temperature of the gas water heater can be kept constant at all times, thereby avoiding the occurrence of water leakage caused by fluctuations of water flow.
  • the water flow inside the water heater forms a closed self-circulation system, through the intelligent control of the system to keep the water temperature constant, so that the heat from the water heater The water can reach the temperature that the user needs.
  • CN102221205A discloses a burner for a gas water heater, comprising a plurality of fire platoons and a gas pipeline, each group of fire platoons mainly composed of a plurality of flame hole groups, each group of flame holes comprising a plurality of flame holes, and each of the flame rows of the fire row
  • the two outer sides are respectively provided with side plates and have a gap with the outer side of the flame hole group, the gap is communicated with the outside only at the side plate and the flame hole port, and the other portions are sealed;
  • the gas pipe includes a light flame gas pipe and a thick flame
  • the gas pipeline and the light flame gas pipeline are in sealing communication with the flame hole, and the thick flame gas pipeline is sealed and connected with the gap between the side plate and the outer side of the flame hole.
  • CN1903457A discloses a pyrolysis carbonization method for municipal garbage, characterized in that the carbonization process of garbage includes at least the following processes, a pyrolysis carbonization process of waste, an acid gas removal process of pyrolysis gas generated during pyrolysis carbonization, and pyrolysis.
  • the combustion process of gas the process in which the high temperature gas after combustion of the pyrolysis gas transfers heat to the garbage in the pyrolysis furnace; and the pyrolysis is carried out at any temperature between 250 ° C and 650 ° C.
  • WO 2011/000513 A1 discloses an integrated waste treatment system and method comprising the use of a source of combustible waste, a separator for separating said combustible waste from a recyclable material, for drying said combustible waste to produce a vacuum dryer for pyrolyzing the raw material and for using the pyrolysis material
  • a system and method for generating electricity by thermal decomposition to produce coke and pyrolysis gases including a waste treatment system or method according to the present invention, further comprising an oxidizer for producing from the pyrolysis feedstock The syngas is oxidized at a high temperature to generate heat for power generation.
  • EP 1 211 691 A2 discloses an organic waste decomposition apparatus and method comprising two reactors in series, each reactor using oxygen-enhanced superheated steam to decompose various organic compounds to reduce mass and volume; When the oxygen mixture is injected into the fluidized bed of the ceramic beads, decomposition occurs rapidly. The velocity of the fluidizing gas mixture agitates the ceramic beads to aid in the fragmentation of solid waste. Oxygen causes certain oxidation reactions to compensate for the heat demand for drying, pyrolysis and steam reforming; most of the pyrolysis occurs at the first stage. A second stage is set up to complete the pyrolysis and to adjust or gasify the waste form by using a co-reactant to change the oxidation state of the inorganic material and using a temperature that separates the metal waste.
  • US20110048915A1 discloses a method for treating waste and pyrolysis of hydrocarbons from daily life and industrial organic waste, the method of treating waste comprising: performing first and second stage pyrolysis; separating the pyrolysis product into several parts; Each part is treated to obtain a useful product, and while the second stage pyrolysis is carried out, the pyrolysis product is electromagnetically acted upon.
  • the apparatus for carrying out the method has a pyrolysis reactor which is composed of two parts. An electromagnetic source is installed in the second portion of the reactor, and the outlet of the second portion is connected to the pyrolysis vapor gas product separation system.
  • blast-burning gas water heater Zeng Lingyu, household appliances, disclosed in September 1996, a blast-burning gas water heater, which changed the structure of the combustion chamber from open to closed, using mechanical blast instead of Naturally induced wind, thus greatly improving the thermal strength of the combustion chamber, so that the water heater has a large water output (up to 20 liters / minute or more) and a small volume (compared to the same heat load of the ordinary water heater, can be reduced by half ), high thermal efficiency (generally can improve 3% to 5%) and other advantages, to achieve the goal of large-flow water heaters to small, efficient development, the basic structure of blast-fired gas water heaters is the same as ordinary gas water heaters, but also by the water system, The gas system, combustion system, heating system, control system and auxiliary system are composed of several parts, and only the burner and some control parts are modified.
  • biomass gas water heaters are mainly directed to conventional fuels such as natural gas or gas, conventional biomass (such as straw) or domestic waste.
  • the gas produced by gasification such as garbage lacks a device for efficiently combusting biomass gas generated by construction waste having a large difference in composition.
  • biomass gas produced by construction waste usually contains a relatively high acid gas, which can cause corrosion to the water heater, especially in the high temperature of the combustion environment, and high impurity content in conventional water heaters. Insufficient combustion is often caused, resulting in serious exhaust pollution. Therefore, the biomass water burner fueled by the biomass waste gas recovered from the construction waste cannot be simply used interchangeably with the conventional burner.
  • a burner for a biomass gas industrial water heater comprises: a plurality of parallel heating pipes, a fine gas pipe for ignition, a gas valve for ignition, a raw Material gas pipe, biomass gas valve, ignition nozzle, ignition hole, blower, air supply pipe, air supply valve, and air supply hole, wherein the fine gas pipe for ignition is at the bottom of the heating pipe of the burner and is tightly connected with the heating pipe
  • the ignition nozzle is at the inner front end of the heating pipe and is substantially in line with the ignition hole
  • the air supply hole is at the tail of the heating pipe.
  • a closed connection structure with a heating pipe means a state in which it is connected to a heating pipe but is sealed to each other.
  • a plurality of juxtaposed heating tubes are coupled and fixed to the water heater to form a unitary structure.
  • the contiguous combination can be implemented in a plurality of unit parallel combining modes as is conventional in the art.
  • the fine gas pipe for ignition is fixed in one of the plurality of heating pipes, and the gas outflow amount is adjusted by the gas valve for ignition.
  • each of the heating tubes in the combustor is connected to a biomass gas tube, each controlled by a valve.
  • the air supply pipe is connected to the tail of the heating pipe, and the air supply pipe is connected to the air blower and is controlled by the valve. Air supply.
  • the biomass gas is biomass gas obtained by gasification of biomass recovered from construction waste.
  • the burner of the present invention is suitable for combustion of biomass gas, and is capable of completely burning 98% by volume or more of biomass gas.
  • the present inventors have found that, as described above, biomass gas produced by construction waste usually contains a relatively high acid gas, which can cause corrosion to the water heater.
  • the inventors have developed an anticorrosive coating which will The coating is applied on the inner surface of the heating tube to form an anti-corrosion layer, which can effectively enhance the corrosion resistance of the heating tube.
  • the anti-corrosion coating comprises: 30%-50% of Al 2 O 3 powder, 10%-30% of MnO 2 powder, 10%-15% of TiO 2 powder, 2% SiO 2 powder, based on the total weight of the coating. 4%, 20%-30% CrO 2 .
  • the coating can be prepared by a plasma thermal spraying process, and the thickness of the coating after molding is about 20-40 ⁇ m.
  • the anti-corrosion coating gives the heating tube corrosion resistance to unburned high-temperature acid gas (which is usually very corrosive to high-temperature acid gas), which effectively improves the service life.
  • a corrosion-resistant layer is reported for the first time in the art, and is a targeted formulation of biomass gas produced by the inventors through extensive research and development on the gasification of construction waste.
  • the alloy can achieve impact toughness more than three times that of the conventionally used chrome-containing iron alloy even in the absence of the tempering-cryogenic composite cycle treatment, and the test method can be carried out in accordance with GB6296-86.
  • the alloy can effectively reduce the second type of residual stress and the third type of residual stress of the burner metal parts, avoiding the relaxation of residual internal stress in the burner metal parts, and the corrosion resistance is also enhanced, which can cause corrosion On The burner component replacement rate is reduced by more than one time. All of these effects were previously unanticipated.
  • the present invention provides an apparatus for converting a biomass recovered from construction waste into a gasification energy source, the apparatus comprising a cracking furnace, a primary purifier, a secondary purifier, and a primary separator. , two-stage separators, Roots blowers and their connecting pipes, or consist of a cracking furnace, a primary purifier, a secondary purifier, a primary separator, a secondary separator, a Roots blower and their connecting pipes.
  • the cracking furnace of the present invention preferably uses a plasma torch heater.
  • the present invention provides an apparatus for converting biomass recovered from construction waste into a gasification energy source, the apparatus comprising a cracking furnace, a primary purifier, a secondary purifier, a primary separator, and a secondary separation. , a Roots blower and a connecting pipe thereof, characterized in that the temperature control system of the cracking furnace enables high temperature to be realized in the middle of the furnace body, and the biomass cracking is sufficient, but the furnace wall does not generate high temperature and the furnace wall has no refractory material;
  • the cracking furnace outlet is connected with the primary purifier, the front end of the secondary purifier is connected to the primary purifier, the rear end is connected with the primary separator, the back end of the primary separator is connected with the secondary separator; the Roots blower and The secondary separators are connected.
  • the apparatus of the present invention does not include a tertiary purifier.
  • the primary scrubber is further provided with a gas scrubber, and the bottom of the gas scrubber is provided with an outlet connected to the sedimentation tank.
  • the cracking furnace end is provided with a dryer, and the dryer is connected to the primary purifier through a gas collecting device, and the gas collecting device is provided with a dust filtering net.
  • the cracking furnace includes an injection device capable of injecting catalyst powder.
  • the fan is preferably a three-lobe Roots blower.
  • the burner of the invention is beneficial to the heating of the gas inside the water heater, and the rear air supply duct not only helps to adjust the air supply amount, but also the gas is fully heated, and the combustion heat is concentrated on the heater front end and the water heater furnace, thereby Obtaining good safety, high heating efficiency, low emission Heater. At the same time, the burner of the invention is convenient to ignite, easy to operate, safe and reliable.
  • Figure 1 is a schematic view showing the structure of a burner for a biomass gas industrial water heater according to the present invention.
  • a burner for a biomass gas industrial water heater characterized in that the burner comprises: a plurality of parallel heating pipes 1, a fine gas pipe for ignition 2, a gas valve for ignition 3, a biomass gas pipe 4, 12, a raw Material gas valve 5, ignition nozzle 6, ignition hole 7, blower 8, air supply pipe 9, 11, air supply valve 10, and air supply hole 13, wherein the fine gas pipe 2 for ignition is at the bottom of the heating pipe 1 of the burner And the heat pipe 1 is in a closed connection structure, the ignition nozzle 6 is at the inner front end of the heating pipe 1 and is substantially in line with the ignition hole 7, and the air supply hole 13 is at the tail of the heating pipe.
  • An anti-corrosion layer is formed on the inner surface of the heating tube, and the anti-corrosion coating comprises: 50% of Al 2 O 3 powder, 15% of MnO 2 powder, 12% of TiO 2 powder, 3% of SiO 2 powder, based on the total weight of the coating. 20% CrO 2 , the coating was prepared by a plasma thermal spraying process, and the thickness of the coating after molding was about 30 ⁇ m.
  • a burner for a biomass gas industrial water heater characterized in that the burner comprises: a plurality of parallel heating pipes 1, a fine gas pipe for ignition 2, a gas valve for ignition 3, a biomass gas pipe 4, 12, a raw Material gas valve 5, ignition nozzle 6, ignition hole 7, blower 8, air supply pipe 9, 11, air supply valve 10, and air supply hole 13, wherein the fine gas pipe 2 for ignition is at the bottom of the heating pipe 1 of the burner And the heat pipe 1 is in a closed connection structure, the ignition nozzle 6 is at the inner front end of the heating pipe 1 and is substantially in line with the ignition hole 7, and the air supply hole 13 is at the tail of the heating pipe.
  • the air supply hole 13 and the ignition nozzle 6 are composed of a chrome-containing iron alloy including: The total weight of the chromium-containing iron alloy is 2.5%, Si is 0.8%, Mn is 0.6%, P is 0.025%, S is 0.04%, V is 0.20%, Ti is 0.010%, Cr is 17.0%, and the balance is For iron and inevitable impurities.
  • Comparative Example 1 differs from Example 1 only in that the inner surface of the heating pipe 1 is not provided with an anti-corrosion layer.
  • Comparative Example 2 differs from Embodiment 2 only in that the blow hole 13 and the ignition nozzle 6 are made of conventional martensitic stainless steel.

Abstract

L'invention concerne un brûleur utilisé pour un chauffe-eau industriel à biomasse-gaz. Le brûleur comprend : de multiples tuyaux de chauffage (1) disposés en parallèle, un tuyaux de gaz mince (2) utilisé pour l'allumage, une soupape à gaz (3) utilisée pour l'allumage, des tuyaux de biomasse-gaz (4, 12), une soupape à biomasse-gaz (5), une buse d'allumage (6), un trou d'allumage (7), une conduite d'alimentation en air (8), des tubes de liaison (9, 11), un clapet d'alimentation en air (10) et un trou d'alimentation en air (13). Le tuyau de gaz mince (2) utilisé pour l'allumage est situé au niveau de la partie inférieure interne de l'un des tuyaux de chauffage (1) du brûleur, et il est relié fermement au tuyau de chauffage (1). La buse d'allumage (6) est située au niveau de l'extrémité avant interne du tube de chauffage (1) correspondant, et elle est fondamentalement sur la même ligne droite que le trou d'allumage (7). D'autre part, le trou d'alimentation en air (13) est situé au niveau de l'extrémité arrière du tuyau de chauffage (1) correspondant. Le brûleur peut améliorer l'efficacité de chauffage, il est pratique à allumer et il est sûr et fiable.
PCT/CN2016/077768 2015-06-22 2016-03-29 Brûleur utilisé pour chauffe-eau industriel à biomasse-gaz WO2016206431A1 (fr)

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CN201510346546.7A CN104949120A (zh) 2015-06-22 2015-06-22 用于生物质燃气工业热水器的燃烧器
CN2015103465467 2015-06-22

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CN104949120A (zh) * 2015-06-22 2015-09-30 刘洋 用于生物质燃气工业热水器的燃烧器
CN109631321A (zh) * 2018-10-17 2019-04-16 中山市思源电器有限公司 一种节能高效热水器
CN109724075B (zh) * 2019-01-30 2024-03-19 何建国 一种混合雾化裂解燃烧器
CN113883510B (zh) * 2021-11-08 2023-11-14 上海电机学院 基于连接扭曲映射的促进燃气空气混合减排的进气装置

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