CN1439858A - Heat exchanging horse shoe flame sodium silicate melting furnace - Google Patents
Heat exchanging horse shoe flame sodium silicate melting furnace Download PDFInfo
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- CN1439858A CN1439858A CN 03106921 CN03106921A CN1439858A CN 1439858 A CN1439858 A CN 1439858A CN 03106921 CN03106921 CN 03106921 CN 03106921 A CN03106921 A CN 03106921A CN 1439858 A CN1439858 A CN 1439858A
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Abstract
A heat exchange type horse-shoe flame kiln for preparing sodium silicate is composed of kiln pool, flame space, small furnace, feeding inlake, feeder and heat exchanger used as the afterheat recovering unit to make flame become horse-shoe shape. A single arch crown structure is used for adapting different kinds of fuel. Its advantages are simple structure, low cost, high temp and atmosphere stability, low energy consumption and long service life.
Description
Technical field the present invention relates to a kind of heat exchange type horse shoe flame melting furnaces that are used for the manufacture sodium silicate solid.
Background technology is present, and the melting furnaces that great majority are produced sodium metasilicate adopt reverberatory furnace, exactly flame or high-temperature furnace gas are pressed to the molten bath along furnace roof in burner hearth, relies on the radiant heat transfer of flame, furnace roof and furnace wall that material is founded.Specific energy consumption is very high, and production efficiency is low.
These type of melting furnaces are disclosed by following patent documentation in the prior art:
Patent specification 87215562 (announcement on October 12nd, 1988) has been described two vault kilns and has been made of last vault and following vault.
Patent specification 93239801.4 (announcement on December 14th, 1994) accompanying drawing has also disclosed it and has been two vault kilns.
Above-mentioned manufacture sodium metasilicate product adopts the two vault kilns (can be described as the double arched kiln stove again, therefore it constitute the also outer arch of title, interior arch) that are made of last vault, following vault.Port is arranged at one termination, kiln pond, and waste gas upwards overturns 180 ° from the following other end of vault, flow through between the two-layer vault passage and enter Heat Room.Vault was under the high temperature all the time in the whole production cycle, and the quilting powder deteriorates, seriously influenced the service life of melting furnaces.And the baking kiln time is long, and heating-up furnace heat up to be difficult for is grasped, even the problem that vault caves under occurring.Two vault furnace construction complexity, the masonry project amount is big, uses material many, has increased the masonry project expense, and the completion time of project is long.
In addition, a kind of flame glide path that patent specification 97210044.X (announcement on September 9th, 1998) describes is the melting furnaces of in-line, and floor space is big.Because of waste gas is to discharge from the Yao Chi end, reinforced and discharging all can only be arranged in the side, causes melting capacity little.After every use production cycle, the maintenance engineering amount is also very big.
All to use coal to be flame kiln thermal source, fuel type selects face very narrow to above-mentioned disclosed prior art.
Summary of the invention for this reason, the purpose of this invention is to provide a kind of heat exchange type horse shoe flame melting furnaces that are used for the manufacture sodium silicate solid, the single-vault structure of taking, avoided following vault the deteriorating of two vault melting furnaces fully by high temperature and material powder, solve the single coal that uses and be melting furnaces thermal source problem, thereby overcome the deficiency of above-mentioned prior art.
The object of the present invention is achieved like this: the end in the kiln pond is provided with a pair of port, after the flame of certain pressure sprays into the flame space of melting furnaces from the port bocca, rely on controlled stack draught again, turn to 180 °, flame is horseshoe-shape in the kiln, forms the glide path of " U " shape on liquid level, inhale burner through the port of opposite side again and enter into Heat Room, the air of heating reverse flow, last, discharge from chimney through flue.Use the fuel of thermal source as melting furnaces, coal gas (comprise the producer gas that produces by gasification, simple and easy producer gas, practice coke gas) and mix in the precombustion chamber of port through the auxiliary air of preheating, and at kiln internal combustion generation high temperature, fusion temperature can reach 1350-1500 ℃.There is a charge door fiery root position in the Yao Chi side, puts into the material process high temperature melting in the kiln, forms the liquation of some and quality.The other end in the kiln pond is to be connected with a dispenser by dog-hole, and liquation is to flow into dispenser through dog-hole from the molten bath.Liquation flows out automatically and constantly from blow tank, is cooled to solid by the current of water jet, or the make-up machine dry method discharging moulding below being arranged on blow tank.
After adopting said structure, because flame is horseshoe-shaped shape in the kiln, stroke is longer, helps the abundant burning of fuel.Adopt the waste heat recovery mode of heat exchange type, need not commutate, temperature and atmosphere are stable, do not have cyclic fluctuation.Avoided vault by the deteriorating of high temperature and material powder fully, long service life, heating-up furnace heats up and easily grasps.Obviously, because simple in structure, consumptive material is few, and auxiliary device is few, and floor space is little, and not high to the factory building conditional request, cost is low.Simple and convenient operation and maintenance.Recondition expense is few.
In addition, the suitable fuel type that uses is many, as the heavy oil of liquid fuel, and the natural gas of gaseous fuel, coal gas.Be gasificated into coal gas as solid-fuelled coal through gas generator, particularly, having than higher economic implications because can use ickings.The kiln temperature is high, can reach 1350-1500 ℃, the output height.Specific energy consumption is low, and use the low calorie fuels specific energy consumption: 300kg marks coal/t finished product, and the production run cost is low.
Description of drawings Fig. 1 is the plane of heat exchange type horse shoe flame sodium metasilicate melting furnaces of the present invention.
Fig. 2 is the profilograph of heat exchange type horse shoe flame sodium metasilicate melting furnaces of the present invention.
Fig. 3 is the drawing in side sectional elevation of heat exchange type horse shoe flame sodium metasilicate melting furnaces of the present invention.
The port figure that Fig. 4 is heat exchange type horse shoe flame sodium metasilicate melting furnaces of the present invention when using exotic fuels.
The specific embodiment is described in further detail below in conjunction with the embodiment of accompanying drawing to this explanation.
Fig. 1 is the plane of heat exchange type horse shoe flame sodium metasilicate melting furnaces of the present invention.
End in kiln pond 1 is provided with a pair of port 2, after the flame of certain pressure sprays into the flame space 4 of melting furnaces from port bocca 3, rely on controlled stack draught again, turn to 180 °, flame is horseshoe-shape in the kiln, on liquid level, form the glide path of " U " shape, inhale burner 5 through the port of opposite side again and enter into Heat Room 6, the air of heating reverse flow.
Fig. 2 and Fig. 3 are the profilograph and the drawings in side sectional elevation of heat exchange type horse shoe flame sodium metasilicate melting furnaces of the present invention.
Coal gas (comprise the producer gas that produces by gasification, simple and easy producer gas, practice coke gas) and mix in the precombustion chamber 6 of port 2 through the auxiliary air of preheating, and produce high temperature in the kiln internal combustion, fusion temperature can reach 1350-1500 ℃.There is a charge door 7 fiery root position in 1 side, kiln pond, puts into the material process high temperature melting in the kiln, forms the liquation of some and quality.The other end in kiln pond 1 is to be connected with a dispenser 9 by dog-hole 8, and liquation is 1 to flow into dispenser 9 through dog-hole 8 from the kiln pond.Liquation flows out automatically and constantly from dispenser 9, is cooled to solid by the current of water jet, or the make-up machine dry method discharging moulding below being arranged on blow tank.For improving the thermal efficiency reasonable energy utilization of kiln, be provided with heat exchanger 6 and reclaim flue gas heat energy.Generally can make more than the air preheat to 900 ℃.Heat exchanger 6 is inhaled burner 5 by port and is communicated with kiln pond 1.Port 2 is combustion apparatus, and the version of employing low calorie fuels is the top air duct 10 that is, is gas passage 11 below, and the centre is separated with tongue arch 12.Gas inlet 13 communicates with gas passage 11.
Fig. 4 is the port figure of another implementation method of heat exchange type horse shoe flame sodium metasilicate melting furnaces of the present invention.
The port bocca 3 of oil firing or natural gas is identical with the port that burns gas.But do not have tongue arch 12, gas passage 11, just there is not pre-burning in an air duct 10 yet.The nozzle 14 of oil or natural gas be installed in port 2 below.
Another embodiment that the present invention adopts is to adopt exotic fuels.Adopt exotic fuels can improve production capacity in the unit interval as the thermal source of melting furnaces, more help reducing specific energy consumption, the specific energy consumption level is lower than 200kg mark coal/t finished product.But the selection of fuel is all multifactor relevant with fuel source and price, should be understandable so choose the implementation method difference.
Claims (6)
1, a kind of heat exchange type horse shoe flame melting furnaces that are used for the manufacture sodium silicate solid, it comprises by kiln pond (1), flame space (4), port (2), charge door (7), dispenser (9), part such as heat exchanger (6) is formed, it is characterized in that: the end at Yao Chi (1) is provided with a pair of port (2), after the flame of certain pressure sprays into the flame space (4) of melting furnaces from the bocca (3) of port (2), rely on controlled stack draught to turn to 180 ° again, on liquid level, form the glide path of " U " shape, just flame is horseshoe-shape in the kiln, inhale the Heat Room (6) that burner (5) enters into the burnt gas waste heat recovery apparatus through the port of opposite side again, the air of heating reverse flow.
2, sodium metasilicate melting furnaces as claimed in claim 1 is characterized in that: there is a charge door (7) the fiery root position in Yao Chi (1) side.
3, sodium metasilicate melting furnaces as claimed in claim 1 is characterized in that: the heat exchanger of employing (6) is inhaled burner (5) by port and is communicated with kiln pond (1).
4, sodium metasilicate melting furnaces as claimed in claim 1 is characterized in that: produce product modulus 2.2-3.7, fusion temperature is controlled at 1350-1500 ℃.
5, sodium metasilicate melting furnaces as claimed in claim 1 is characterized in that: when using heavy oil or gas fuel, port has only air duct (10), does not have gas passage (11), tongue arch (12), precombustion chamber (6).
6, sodium metasilicate melting furnaces as claimed in claim 1 or 2 is characterized in that: nozzle (14) be installed in port (2) below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03106921 CN1439858A (en) | 2003-02-27 | 2003-02-27 | Heat exchanging horse shoe flame sodium silicate melting furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03106921 CN1439858A (en) | 2003-02-27 | 2003-02-27 | Heat exchanging horse shoe flame sodium silicate melting furnace |
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| CN1439858A true CN1439858A (en) | 2003-09-03 |
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| CN 03106921 Pending CN1439858A (en) | 2003-02-27 | 2003-02-27 | Heat exchanging horse shoe flame sodium silicate melting furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120586A (en) * | 2011-03-16 | 2011-07-13 | 相庆柱 | Kiln for producing sodium silicate |
| CN102838267A (en) * | 2012-09-17 | 2012-12-26 | 江苏锦程集团科技有限公司 | Heat exchange chamber of diamond bead blank melting tank furnace |
-
2003
- 2003-02-27 CN CN 03106921 patent/CN1439858A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120586A (en) * | 2011-03-16 | 2011-07-13 | 相庆柱 | Kiln for producing sodium silicate |
| CN102120586B (en) * | 2011-03-16 | 2013-01-09 | 相庆柱 | Kiln for producing sodium silicate |
| CN102838267A (en) * | 2012-09-17 | 2012-12-26 | 江苏锦程集团科技有限公司 | Heat exchange chamber of diamond bead blank melting tank furnace |
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Addressee: Yang Fusheng Document name: Third notice of examination advice |
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| WD01 | Invention patent application deemed withdrawn after publication |