CN2151151Y - Gas generator - Google Patents

Abstract

The utility model provides a positive pressure top blowing type gas generating stove. The utility model is characterized in that through the improvement and design of a normalizing type gas generating stove, the stove generates the gas in the down direction, gas dust removing, a cooling device and a pipeline in the system are respectively subjected to the positive pressure, and the leakage can be timely discovered and handled. Air enters from the stove top in the gasifying process, coal is added from the top part, and the gas is blown out from the bottom; accordingly, the gas discharged from the stove has less tar and phenol, the methane quantity is correspondingly increased, and the adaptability of a gas generating stove to coal kinds is widened. The utility model can be used for volatile matter anthracite coal, weak-caking and non-caking coal, and similar coal briquette; the generated gas can meet the requirements of the industry and the domestic gas.

Description

Gas generator

The utility model relates to a kind of producer gas generator, particularly air top-blown producer gas generator.

Existing producer gas generator, a class is a normalizing-fire type gas generator, during gas making, the bed of material moves down in stove, and vaporized chemical (air and water vapor) from bottom to top flows, institute's producing coal gas is discharged by top.During the gasification operation, required air is upwards sent in the stove by gas blower from furnace bottom by force, at first enter ash bed, because ash bed space inequality, vaporized chemical flows uneven, causes inclined to one side stove easily, the too high and slagging scorification of local temperature, strict to coal, have only the high-quality lump coal of fine hard coal or weakly caking coal, non-caking coal just can go into stove.Another kind of is that back-fire type also claims down-draft producer, application number is: 86206045 utility model names are called: reflecting gas producer, adopt anti-fiery structure, open upper fuel aspect, the body of heater bottom is provided with a water tank, the diving aspiration channel is installed, is bled, by the vacuum suction pipeline coal gas is inhaled in the stove and sent in the coal gas cooling scrubber by the vacuum water-ring pump.Gasification is because reducing zone also has destructive distillation layer bottom in zone of oxidation, and volatile matter can obtain and make full use of in the fuel, and the uncovered operation of anti-internal heatization is simultaneously pinpointed the problems in time to handle and avoided local temperature too high.But operation because the employing vacuum pump is bled, produced the unfavorable factor of two aspects, 1. the equal negative pressure state of the equipment of the dedusting cooling system from furnace bottom to vacuum pump coal gas the last period and pipeline is in case cause the air that bleeds (be difficult to check and realize) to mix with coal gas and easily cause blast.2. the water-ring vacuum pump watt consumption is big, and because of the coal gas dust removal difficulty, makes cooling system often need the blowing out flushing, also makes the corresponding shortening in work-ing life of pump.。

It is wide that the purpose of this utility model provides a kind of coal adaptability, and malleation top blast air blast operation blasts vaporized chemical from furnace roof, and descending system gas, lime-ash and coal gas are all discharged from furnace bottom, the producer gas generator of the whole malleations of system.

The purpose of this utility model can reach by following measure, and adding coal bunker is the double belljar sealed structure, is made up of upper and lower two coal bins.Along uniform several fire exploring holes of bell top circumferential direction, quantity is decided according to stove internal diameter size.For preventing that air and steam from leaking, structure adopts quick operating valve gland form.Top and coal-stopping loop that distributor is fixed on furnace chamber combine, and have the bar shaped notch for improving cloth coal performance on coal-stopping loop, can make coal be dispersed in sole and stove center, and coal is even under reaching.Described distributor and bell are fixed with screw, according to the upper-lower position of regulating distributor outside the drop point stove of coal in stove.At water jacket inner face lower furnace skirt the break circle is installed.Fire grate is one of most important parts of producer gas generator, the quality of its performance, for in fuel bed, setting up normal stable gasification very important effect is arranged, therefore the fire grate of the utility model employing is the multilayer pyramid-like structure, each interlayer leaves the slit, can make coal gas enter the fire grate chamber, downward-sloping fire grate constitutes the grey structure that stagnates and prevents that coal ash from falling into the fire grate chamber.The spiral that is cast with in the pyramidal structure outside diffuses the shape muscle, and the lime-ash in the middle part of making is arranged when it rotates and fallen into ash-pan to periphery, and ash-pan is the disk-shaped structure spare that is combined into by the polylith ironcasting, and interior dress water can constitute water seal with the skirtboard of furnace bottom, prevents to generate coal gas and leaks.The bottom has in the spin groove puts iron ball, and the gear ring on outer limit and the worm screw of transmission rig are joined, and makes grey disc spins discharge lime-ash in order to drive gear ring.Coal gas is discharged from gas exit.Air enters from furnace roof portion in the gasification, and coal adds from the top, forms conversion zone in stove, is respectively drying layer, dry distillation layer, zone of oxidation, reducing zone, ash bed from top to bottom.

The utility model compared with prior art has following advantage:

1, the characteristics that kept the back-fire type stove, descending system gas, because coal gas blows out at furnace bottom, senior hydro carbons such as tar that coal produces at the destructive distillation band and phenols are through high-temp combustion band and big of zone of reduction or all cracking, thereby discharged producer gas is coal-tar middle oil and the phenol amount is seldom simplified purification system, and the adaptability of crude gas producer to coal has been widened in the corresponding increase of methane content in the coal gas, can be used for high volatile hard coal, weak sticking, non-caked bituminous coal and similar coal briquette.

2, make coal gas dust removal in the system, cooling apparatus, pipeline all locate malleation, have leakage can in time find to handle, guaranteed safety in production.

3, owing to do not adopt water-ring vacuum pump, saved power consumption, total power consumption of gas compressor only reaches 1/2nd of water-ring vacuum pump power consumption before blower fan and the gas holder, has improved heat energy utilization rate and gasification efficiency.

Fig. 1 is a structural representation of the present utility model.

Below in conjunction with accompanying drawing embodiment of the present utility model is further described:

As shown in Figure 1, add coal bunker 1 and adopt the double belljar structure, is made up of two coal bins up and down, the chain operation of two valve switching motions during coal is to realize the continuous operation of production.Fire exploring hole is arranged on furnace roof, and is uniform along the stove circumferential direction, and quantity is big or small and different according to the stove internal diameter, is that four main effects are for convenience of condition monitoring in service as 1.2 meters stoves of diameter, and control and processing scab.Be fixed with distributor 3 on the top of furnace chamber, this distributor is combined with coal-stopping loop by the bell jar outlet, has the bar shaped notch on coal-stopping loop, so that the coal branch is scattered in sole and stove center, makes down coal even.Because fire grate 6 adopts pyramid-like structure, downward-sloping fire grate constitutes the grey structure that stagnates, and can avoid thin soot particle to enter the fire grate chamber with coal gas, and the pyramidal structure outside is cast with spiral and diffuses the shape muscle, and lime-ash imports periphery and falls into ash-pan 8 when it rotates in the middle of making.Because each interlayer leaves the slit, make and all form cloth wind gap between every layer of fire grate, coal, vaporized chemical can evenly enter the fire grate chamber by cloth wind gap, and the fire grate seat is polygonal structure, during running and break circle 7 bite the bulk molten slag into pieces, broken back small dreg piece can be discharged smoothly.

During operation, coal charge enters in the stove from furnace roof portion through double belljar coal supply apparatus 1, goes into stove from the air and the steam of blower fan from gas inlet 4.From top to bottom the coal gas of the arid zones a of process coal, dry distillation band b, zone of oxidation c, zone of reduction d generation enters the fire grate chamber through bottom ash and clinker zone e from fire grate 6 slits successively, and coal gas is discharged bodies of heater from gas exit 9, enters the dedusting cooling system of coal gas.Discharged by thin ash mouth 10 by the thin ash of deposition that heating gas is brought in the fire grate chamber, the remaining lime-ash in reaction back makes ash-pan 8 rotations plough by big ash by worm screw drive gear ring and discharges lime-ash.

Claims (1)

1, a kind of producer gas generator, comprise coal supply apparatus, dust removing system and transmission rig, it is characterized in that: body of heater is cylindrical, the top seals, top along the circumferential direction uniform several fire exploring holes [2] of lid, quantity is decided according to stove internal diameter size, the portion interposition of covering is equipped with double belljar and adds coal bunker [1], be fixed with distributor [3] on the top of furnace chamber, described distributor [3] is combined with coal-stopping loop by the outlet of coal bell jar, on coal-stopping loop, have the bar shaped notch, inside and lower furnace skirt at water jacket [5] are equipped with break circle [7], squeeze the fire grate [6] of stinging the bulk slag in relative movement with break circle [7] and be the multilayer pyramid-like structure, the outside of pyramidal structure is cast with spiral and diffuses the shape muscle, described fire grate is combined by the comb piece, each interlayer leaves the slit, the fire grate seat is polygonal structure, the ash-pan of body of heater bottom [8] is the disk-shaped structure that is combined into by the polylith ironcasting, and interior dress water can constitute water seal with the skirtboard of furnace bottom, and spin is arranged at the bottom, put iron ball in the groove, the rotation of joining of the gear ring on outer limit and the worm screw of transmission rig is rotated ash-pan [8] and is discharged lime-ash, and coal gas is discharged from gas exit [9].

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