CN87101780A

CN87101780A - Gasifying powder coal device

Info

Publication number: CN87101780A
Application number: CN87101780.6A
Authority: CN
Inventors: 生三胜
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-03-07
Filing date: 1987-03-07
Publication date: 1987-09-09
Also published as: CN1005572B

Abstract

A kind of gasifying powder coal device is specially adapted to internal combustion engine and city boiler combustion, by fine coal case, gas blower, settling chamber, compositions such as cartridge heater and combustion chamber.Settling chamber is connected with the transfer lime of fine coal gas mixture, and inside is a cylinder type hollow cartridge heater, is evenly distributed with many meshes on the outside surface of cartridge heater, and cartridge heater stretches out and shrinks gradually from the settling chamber bottom and forms a spout.The combustion chamber that is connected with the cartridge heater top is enclosed within the outside surface of settling chamber, and the connected component of combustion chamber is a circular blower inlet casing.In addition, the outside surface of combustion chamber also is covered with a water jacket, and the vapour pipe at water jacket top is connected with settling chamber.

Description

Gasifying powder coal device

The present invention relates to a kind of solid fine coal is converted into the gasification installation of gas, be specially adapted to internal combustion engine and city boiler combustion.

At present, coal gasification is generally carried out in the industrial gasification stove, and this equipment for gasification is made up of vapourizing furnace, powder divider, fly-ash separator, waste heat boiler and washing tower etc. because the equipment heaviness, huge, only be suitable for large-scale commercial production.Chinese patent CN85203738 discloses a kind of small-sized civilian coal-burning gas producer, still is difficult to use in internal combustion engine and city boiler.

In order to address the above problem, the invention provides the gasifying powder coal device that a kind of volume is little, in light weight, factor of created gase is high, applied widely.

Accompanying drawing is the structural representation of gasifying powder coal device.

The present invention is achieved in that and handles throttling valve 3, solid fine coal and air enter cartridge heater 6 in the cylindrical settling chamber 5 by fine coal case 1 and gas blower 2 separately after transfer lime 4 mixes, combustible gas enters from the spout bottom the cartridge heater and carries out ignition in the cartridge heater, fine coal gas mixture (fine coal, air) in the cartridge heater carries out ignition through in the cartridge heater, the fine coal gas mixture in the cartridge heater by thermal source through heating, decompose, the some burning is laggard goes into combustion chamber 10 burnings.In addition, the outside surface of combustion chamber also is covered with a water jacket 8, by float chamber 11 automatic water-supplies, rely on the water evaporation in the reaction heat water jacket, enter settling chamber through vapour pipe 7, in the combustion chamber, react the coal gas (being mainly carbon monoxide and hydrogen) that comes out from the combustion chamber at last and after purifying, discharge with fine coal.

Below in conjunction with accompanying drawing this programme is described in detail.

Gasifying powder coal device is mainly by fine coal case 1, gas blower 2, settling chamber 5, cartridge heater 6, combustion chamber 10 compositions such as grade.Columniform settling chamber 5 inside that is connected with the transfer lime 4 of fine coal gas mixture is a cylinder type hollow cartridge heater 6, on the outside surface of cartridge heater, be evenly distributed with many meshes 17, cartridge heater stretches out and shrinks gradually formation one spout 18 and utilizes small blast fan 13 and oil float seed cell 14 that gasoline combustible gas or other fuel are carried out ignition after spout is sent into cartridge heater from the settling chamber bottom, produce 1600-2300 ℃ high temperature heat source in cartridge heater, the consumption of gasoline combustible gas accounts for the 5-8% of coal consumption amount.Meanwhile, the fine coal mixed airflow in the settling chamber enters in the cartridge heater by mesh set on cartridge heater in a spiral manner and heats, decomposes, lights, and burns in the combustion chamber then, and main resultant is carbon monoxide and a spot of carbonic acid gas.The combustion chamber that is connected with the cartridge heater top is enclosed within the outside surface of settling chamber, and the connected component of combustion chamber is a circular shell-like structure 9.

Fine coal has been emitted a large amount of heats after combustion chambers burn, the also corresponding reduction of calorific value of coal gas simultaneously, in order to control the skin temperature of combustion chamber, increase the calorific value of coal, the outside surface of combustion chamber also is covered with a water jacket 8, the vapour pipe 7 at water jacket top is connected with settling chamber through the transfer lime of fine coal gas mixture, the water receiving pipe 12 of water jacket is connected with a float chamber 11, rely on pulverized coal friring time institute liberated heat, water evaporation in the water jacket also enters combustion chamber participation reaction, reaction process is an endothermic process, and the reaction of fine coal mainly is thermopositive reaction in the combustion chamber, according to reaction equation:

The steam output of water vapor will directly be regulated by the coal amount of participating in reaction haply voluntarily, the also corresponding raising of the calorific value of coal, and the calorific value of coal gas inflammable mixture also can reach 850 kilocalories/mark rice simultaneously ³

In addition, on the cartridge heater outside surface total area of mesh be the fine coal mixed gas pipeline exit area 5-10 doubly, the diameter of mesh is generally less than 1 millimeter.

In order to prolong the heat-up time of fine coal, reduce of the direct impact of fine coal mixed airflow to cartridge heater flame, the diameter of settling chamber is greater than the exit diameter of 2.5 times transfer lime.

The pneumatic tube 15 that is communicated with the combustion chamber also is connected to a Wet-type centrifugal formula cleaner 16, and lime aqueous solution is housed in the cleaner, so that further reduce ash and sulfur in the coal gas.

The import of fine coal mixed gas pipeline is connected to fine coal case and gas blower inlet pipe, inlet pipe puts in the exit portion of fine coal case, and outlet partly has a conical wing valve 3, and the awl point can put in inlet pipe, cone can be sealed the exit portion of fine coal case, with the flow of the fine coal gas mixture in the control transfer lime.The ratio of fine coal gas mixture is regulated by throttling valve, and the size of the outlet of the tapering of throttling valve and gas blower inlet pipe and the outlet of fine coal case is relevant, can determine its size by experiment.

Can decompose rapidly after making the fine coal heating, accelerate flame mechanism, pulverized coal particle size should be within 1/15-1/10 millimeter, after fine coal passes through washing in advance simultaneously, can reduce the ash of coal greatly, reduces atmospheric pollution.

The present invention strengthens the oxidability of fine coal owing to adopted fine coal mixed gas pipeline and high-temperature heating cylinder greatly, and it is more abundant to burn, because compact conformation, so that whole device volume is little, lightweight. The present invention is after internal combustion engine uses, and the automobile of 5 tons of weights, the volume of gasifying powder coal device only are 70 * 60 * 50 cubic centimetres, heavily about 70 kilograms, solve the problem of the single use fuel oil of various vehicles, saved the energy, and opened up a new way for the utilization of coal.

Claims

1, a kind of gasifying powder coal device, form by fine coal case, gas blower, settling chamber, process furnace and combustion chamber etc., it is characterized in that cylindrical settling chamber is connected with the transfer lime of fine coal gas mixture, inside is a cylinder type hollow cartridge heater, on the outside surface of cartridge heater, be evenly distributed with many meshes, cartridge heater stretches out and shrinks gradually from the settling chamber bottom and forms a spout, the combustion chamber that is connected with the cartridge heater top is enclosed within the outside surface of settling chamber, and the connected component of combustion chamber is a circular shell-like structure.

2, gasifying powder coal device as claimed in claim 1, the total area that it is characterized in that mesh on the cartridge heater outside surface be the fine coal mixed gas pipeline outlet area 5-10 doubly.

3, gasifying powder coal device as claimed in claim 2 is characterized in that the diameter of the diameter of settling chamber greater than 2.5 times transfer lime outlet.

4, gasifying powder coal device as claimed in claim 3 is characterized in that the outside surface of combustion chamber is covered with a water jacket, and the vapour pipe at water jacket top is connected with settling chamber through the transfer lime of fine coal gas mixture, and the water receiving pipe of water jacket is connected with a float chamber.

5, gasifying powder coal device as claimed in claim 4 is characterized in that the pneumatic tube of combustion chamber is connected to cleaner.

6, as claim 1,2,3,4 or 5 described gasifying powder coal devices, it is characterized in that the inlet pipe of gas blower puts in the exit portion of fine coal case, exit portion has a conical wing valve.