CN2350393Y

CN2350393Y - Stalk gas producer

Info

Publication number: CN2350393Y
Application number: CN 98243919
Authority: CN
Inventors: 管宗颉
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-23
Filing date: 1998-12-23
Publication date: 1999-11-24
Anticipated expiration: 2008-12-23

Abstract

The utility model relates to a stalk gas producing stove, belonging to a burner. The stalk gas producing stove is used for producing gas by using plant stalks. The stalk gas producing stove is characterized in that the stalk gas producing stove is composed of an upper stove body which is provided with a reverse-truncated-cone-shaped feed inlet and a reverse-truncated-cone-shaped upper stove chamber, a middle stove chamber which is provided with a gas outlet, an inlet overflow pipe, and a heat insulating layer, and is provided with a reverse truncated cone shape and a lower straight cylinder shape inside, a gas gathering circle pipe, a hoisting interlayer wall, a gas pipe array, a middle stove body which is provided with an inner water chamber and an outer water chamber, a grate, and a lower stove body which is provided with an ash discharging port. The utility model has the advantages of reasonable and scientific design, capacity of gasifying stalks in an optimal thermalization condition, high thermal energy utilization rate, high gas conversion rate, stable quality, strong operability, etc.

Description

Stalk gas generating furnace

A kind of stalk gas generating furnace belongs to the combustion unit technical field, is used to utilize the preparation of plant straw to concentrate for generating, heating, particularly rural area and supplies with the combustion gas that every family is heated up water and cooked.

In the prior art, external the forties promptly is useful on farm, heating of villages and small towns collective and the similar device of present technique; The domestic research of also carrying out this respect since the early 1990s.Find the patent application formerly of existing similar technique through looking into the Chinese patent communique.But compare with the invention, all have some technical problems to some extent: if any chamber design unreasonable, in different zones,, be prone to " bridging ", cause " wind-tunnel " along with the variation of fuel stacking volume, destroy the stability of gasification, caused the instability of combustion gas quality; The not consideration raw material that has is in burning (oxidation)---gasification needs the problem of a stable high-temperature field in a series of thermochemical process such as (reduction), no matter thereby burner hearth interior be that thermal insulation layer is not established in combustion zone or reduction zone; The problem of not considering energy balance and comprehensive utilization in the gasification that has, the direct extraction out of the high-temperature fuel gas that produces in the stove seen off, and not preheating of freezing air promptly enters in the stove, has so both wasted a large amount of heat energy, reduce the combustion gas transformation efficiency again, and caused the with low quality of prepared combustion gas; Though what have is provided with water cavity (or water jacket), but the balance that does not play water supply and steam is supplied with control action kou, be difficult to guarantee that the balance of water and steam is supplied with in the gas-making process, can't guarantee normally carrying out of stove internal combustion conversion process, in addition cause easily stop burning, accident such as blowing out; The fire grate unreasonable structure that also has can not guarantee that deslagging is unimpeded, and vapourizing furnace can't be realized long-term continuous operation.

The purpose of this utility model is to provide a kind of design science reasonable, and structure is simpler, and is stable and reliable for performance, can overcome existing variety of issue in the prior art, has more the stalk gas generating furnace of practical value.

Characteristic and heat energy according to the plant straw transform ultimate principle, at existing problem in the prior art, basic design of the present utility model is: based on existing similar technology three-section type body of heater, carrying out following several puts into the melting pot: (1) changes the straight-tube shape burner hearth has the burner hearth of different taperings for its inner chamber, in order to optimizing straw burning conversion process; (2) set up thermal insulation layer in furnace combustion zone and reduction zone,, stablize thermal field, improve transformation efficiency and combustion gas quality so that increase the body of heater thermal capacitance; (3) uprising warm combustion gas directly extracts out in the burner hearth and sees off for having been undertaken being drawn out of after heat exchange has made full use of waste heat by tubulation and the freezing air that enters in the furnace chamber, to improve the comprehensive utilization ratio of energy again; (4) set up two air-pre-heating cavities in the body of heater, so that after the extraneous abundant preheating of freezing air that enters by upper furnace body and middle body of heater outside sandwich, enter again be arranged in high temperature switched area that body of heater forms by the tubulation that high-temperature fuel gas passed through and become high temperature air after, be admitted to the combustion zone, to guarantee oxidation in the stove---the condition optimizing of reduction process is with stable; (5) below middle body of heater, the inside and outside connection respectively and burner hearth sidewall and sidewall of the furnace body and common two water cavities of forming of furnace bottom is set, and the steam that water is wherein produced by the high-temperature fuel gas ebuillition of heated enters that mix mutually with warm air the elevated temperature heat switched area and further entered the reduction conversion of participating in combustion gas in the stove after the heating by above-mentioned tubulation; (6) changing the single-decker oven double-edged fine-toothed comb is to be welded with the ash disposal rake teeth in two-layer up and down and the lower floor also can to slide along the track of band pulley, and the control stick that exposes by sealing can make levels produce displacement mutually, removes cindery two-deck oven double-edged fine-toothed comb; (7) set up the sky gas entering opening in the upper furnace inside upper part, make charging place keep negative pressure, avoid the excessive contaminate environment of flue dust; (8) change straight tubular opening for feed for being inverted hollow frusta-conical shape, to guarantee that bed thickness is even, the material bed is stable, thereby realizes purpose of design.

Stalk gas generating furnace described in the utility model, from top to bottom successively by band opening for feed 1 and the upper furnace body 3 of upper furnace 4 is housed, band gas outlet 7 and water inlet pipe 19 is housed and the lower furnace body 13 of the middle body of heater of overflow pipe 16 and middle burner hearth 9 11 and band ash discharging hole 14 and be loaded on above-mentioned in, fire grate 15 between the lower furnace body 11 and 13 constitutes, and on above-mentioned, in, following three bodies of heater are fused mutually by method indigo plant, it is characterized in that its above-mentioned opening for feed 1 of this stove is inverted hollow frusto-conical and on above-mentioned, in two burner hearths 4 and 9 place, nearly upper edge be provided with air inlet hole 2, it is suitable for reading and gather ring pipe 6 with the combustion gas that is connected with above-mentioned gas outlet 7 again welded together of its upper edge that burner hearth in being looped around 9 also is housed between two sidewalls of above-mentioned middle body of heater 11 and middle burner hearth 9, its upper edge and middle burner hearth 9 are welded together in order to be separated out the lifting annular gap wall 10 of second preheating zone, its upper end and combustion gas gather ring pipe 6 be connected its lower end be provided with fuel gas inlet 17 and they form on every side the combustion gas tubulation 21 of high temperature heat transfer zone 20 and both with above-mentioned advancing, outer water cavity 12 of annular and the interior water cavity 18 of annular that two

water pipes

19 and 16 are connected and be connected by pipe each other overflows.

Above-mentioned upper furnace 4 is inverted hollow frusto-conical, common first preheating zone 5 of forming the hollow right-angle triangle swiveling ring bodily form of the straight sidewall of its oblique sidewall and above-mentioned upper furnace body 3 and part furnace bottom, this district and above-mentioned upper furnace 4 reach middle body of heater 11 inner chambers and are eated dishes without rice or wine to be connected by the gas that is positioned on burner hearth oblique side top and the body of heater base respectively.

Above-mentioned middle burner hearth 9 its tops are inverted hollow frusto-conical, and the bottom that is connected as a single entity with it is cylindric, and on their inwall thermal insulation layer 8 is housed all.

Above-mentioned fire grate 15 is by last fire grate 22 and be positioned at the track 25 that is welded with the following fire grate 23 of ash disposal rake teeth 24 on the fire bars below it and pulley is housed and constitute, expose in sealing that upper and lower two

fire grates

22 and 23 can produce mutual displacement under the promotion of control stick of body of heater, thereby ashes are removed.

The utility model has the advantages that: furnace binding modern design, science, reasonable, various low-quality biomass materials are transformed under the thermochemistry condition of the best and gasify, heat energy utilization rate height, the combustion gas transformation efficiency is also high, combustion gas quality is high and stable, and combustion heat value is near theoretical value; Dependable performance, workable, have more practicality, the body of heater overall dimensions can change with the air demand size, and are of many uses, both can be used for generating, the heat supply heating of Residential areas collective, industrial heating, can be the heating etc. of cooking of heating up water of the above rural area central gas supply in 100 families again, both but save energy can alleviate environmental pollution again, can also reduce the combustion gas production cost.

Accompanying drawing 1 is the whole vertical vertical profile structural representation in one of the utility model most preferred embodiment assembling back.

Accompanying drawing 2 is a two-deck oven double-edged fine-toothed comb structural representation.

Further describe constitutional features of the present utility model as follows with most preferred embodiment in conjunction with the accompanying drawings: active boiler steel plate welding all be tubular and by method indigo plant link together on, in, following three bodies of heater 3, in 11 and 13, the place suitable for reading of upper furnace body 3 adorns the opening for feed 1 of the inverted hollow frusto-conical that a usefulness welded steel plate forms, adorn the inverted hollow frusto-conical and the nearly upper furnace 4 that is provided with 10 air inlet holes 2 suitable for reading of a usefulness steel plate welding fabrication in this body of heater, this burner hearth sidewall and sidewall of the furnace body and part furnace bottom are formed one by first preheating zone 5 of the rectangular trilateral in its cross section around burner hearth, the gas inlet of this district by being located at burner hearth sidewall top and furnace bottom proximal wall place respectively with upper furnace 3 and middle body of heater 11 intracavity inter-connections; At band gas outlet 7 and water inlet pipe 19 is housed and middle body of heater 11 inner chambers of overflow pipe 16 are equipped with between two parties with steel plate and are welded and place suitable for reading also is provided with 10 air inlet holes 2, be connected as a single entity up and down go up more than half portion be inverted hollow frusto-conical and down cylindrical and its inwall of smaller part portion all adorn the middle burner hearth 9 of thermal insulation layer 8, around this burner hearth 9 suitable for reading and and its upper edge welding together and and above-mentioned middle body of heater 11 on the combustion gas that is connected of gas outlet 7 gather annular square tube 6, upper end, burner hearth 9 first halves outside welds together steel plate matter lifting annular gap cylindraceous wall 10 with the furnace roof of middle body of heater 11 in being enclosed within, the sidewall of it and middle body of heater 11 is formed with second preheating zone that gas inlet is connected with first preheating zone 5, upper end and combustion gas gather endless tube 6 lower end that is connected and are provided with the combustion gas tubulation 21 (forming high temperature heat transfer zone 20 on every side at it) of fuel gas inlet 17 steel pipe matter between interlayer wall 10 and middle burner hearth sidewall, respectively with middle body of heater 11 sidewalls and furnace bottom and in burner hearth 9 sidewalls and furnace bottom form jointly steel plate matter and with above-mentioned advancing, the outer water cavity 12 of the sealing square-section annular that two

water pipes

19 and 16 that overflow are connected and the upper end is opened wide and the interior water cavity 18 that is connected with outer water cavity 12 by pipe; In, down be equipped with between two bodies of heater 11 and 13 to be welded into and be welded with two ash disposal rake teeths 24 that insert fire grate fire bars gap, upper strata straight up and be higher than fire bars on the big fire bars of less upper strata fire grate 22 of fire bars spacing and fire bars distance and can the two-deck oven double-edged fine-toothed comb 15 that following fire grate 23 is formed that track that pulley is housed on can be along it moves be installed under the push-and-pull that is exposed to the control stick outside the body of heater in sealing by the garden steel; Lower furnace body 13 bottoms are provided with ash discharging hole 14.Straw its ash after opening for feed 1 is gone into upper furnace 4 and the 9 abundant burnings of middle burner hearth is discharged through fire grate 15 and ash discharging hole 14, air is entered through 5 preheatings of first preheating zone are entered second preheating zone again and become high temperature air to elevated temperature heat switched area 20 by inlet after by inlet, burner hearth 9 in hole 2 enters, and water is gone into outer water cavity 12 excessive water by water inlet pipe 19 and is overflowed by overflow pipe 16 and go into middle burner hearth after water cavity 18 gasification back steams enter elevated temperature heat switched area 20 and air mixed in pipe connecting is gone into, and the combustion gas that is produced is come out to be aggregated into combustion gas through fuel gas inlet 17 and tubulation 21 from fire grate 15 and gathered ring pipe 6.

Change as present embodiment:

1, used starting material of each and combustion gas gather the shape of ring pipe, the shape of inside and outside water cavity etc. and all can suitably change;

2, the quantity in air inlet hole, but can in 6～20 scopes, change on each burner hearth and dual layer arrangement all.

3, the combustion gas tubulation can change in 10～20 scopes, also can adopt bend pipe, serpentine tube or spiral tube, also can be on the straight tube outer wall radiation fin;

4, body of heater general shape size diameter can be at 1000～1500mm, and height changes in 1800～2500mm scope.

Claims

1, a kind of stalk gas generating furnace, from top to bottom successively by being with opening for feed [1] and the upper furnace body [3] of upper furnace [4] being housed, band gas outlet [7] and water inlet pipe [19] is housed and the middle body of heater [11] of overflow pipe [16] and middle burner hearth [9] and be with the lower furnace body [13] of ash discharging hole [14] and be loaded on above-mentioned in, fire grate [15] between lower furnace body [11] and [13] constitutes, and on above-mentioned, in, following three bodies of heater are fused mutually by method indigo plant, it is characterized in that its above-mentioned opening for feed [1] of this stove is inverted hollow frusto-conical and on above-mentioned, in the place, nearly upper edge of two burner hearths [4] and [9] be provided with air inlet hole [2], be equipped with also between two sidewalls of above-mentioned middle body of heater [11] and middle burner hearth [9] that to be looped around middle burner hearth [9] suitable for reading and gather ring pipe [6] with the combustion gas that is connected with above-mentioned gas outlet [7] again welded together of its upper edge, its upper edge and middle burner hearth [9] are welded together in order to be separated out the lifting annular gap wall [10] of second preheating zone, its upper end and combustion gas gather ring pipe [6] be connected its lower end be provided with fuel gas inlet [17] and they form on every side the combustion gas tubulation [21] of high temperature heat transfer zone [20] and both with above-mentioned advancing, annular outer water cavity [12] and the interior water cavity [18] of annular that two water pipes [19] and [16] are connected and be connected by pipe each other overflows.

2, stalk gas generating furnace according to claim 1, it is characterized in that above-mentioned upper furnace [4] is inverted hollow frusto-conical, common first preheating zone [5] of forming the hollow right-angle triangle swiveling ring bodily form of the straight sidewall of its oblique sidewall and above-mentioned upper furnace body [3] and part furnace bottom, this district and above-mentioned upper furnace [4] reach middle body of heater [11] inner chamber and are eated dishes without rice or wine to be connected by the gas that is positioned on burner hearth oblique side top and the body of heater base respectively.

3, stalk gas generating furnace according to claim 1 is characterized in that above-mentioned its top of middle burner hearth [9] is inverted hollow frusto-conical, and the bottom that is connected as a single entity with it is cylindric, and thermal insulation layer [8] all is housed on their inwall.

4, stalk gas generating furnace according to claim 1 is characterized in that above-mentioned fire grate [15] is by last fire grate [22] be positioned at the track [25] that is welded with the following fire grate [23] of ash disposal rake teeth [24] on the fire bars below it and pulley is housed and constitute.