CN2205951Y - Cooling device for high-temp. furnace - Google Patents

Abstract

The utility model relates to a high temperature furnace cooling device, which is suitable for the fixed high temperature furnace of metallurgy industry, chemical industry, etc. The high temperature furnace cooling device can overcome the problems of the high temperature furnace cooling devices which are used at present, such as, the fuming furnace cooling device which is used for processing the middle materials in the tin smelting process has the problems that the bottom of the furnace can easily be burnt through to cause an explosion, the fuming furnace cooling device only can be used for 15 days at most by one time of maintenance, the maintenance time is cost a lot, the cost is high, the production time is relative short, etc. The technique of the high temperature furnace cooling device is mainly characterized in that the sealed water tank which is originally used by the furnace bottom is changed into an open water tank. The high temperature furnace cooling device is used by an applicant for 16 months, cinder is leaked for three times during the 16 months, no explosion is occurred, the service life of one time maintenance is improved by four times than the original maintenance time, and good benefits are obtained.

Description

Cooling device for high-temp. furnace

The utility model relates to the cooling device of the fixing high temperature furnace that industries such as a kind of metallurgy, chemical industry use, and the avoiding of the fuming furnace that uses in particularly a kind of tin metallurgical process blasted and can be prolonged the cooling device of life cycle more than 5 times.

Now, metallurgical, the fixing high temperature furnace that industries such as chemical industry are used, as handling the employed fuming furnace of intermediate material in the tin metal metallurgical process, the cooling of its furnace bottom all is to adopt the cooling of furnace bottom water tank, its structure is to build the refractory brick protective layer on airtight water tank, the fault of this cooling device is: fuming furnace is after operation a period of time, the refractory brick protective layer mechanical erosion that material seethes up and down in stove, under the effect of factor such as high temperature melting and chemical attack, be consumed or water tank cools off when bad, the furnace bottom cooling water tank is burnt logical, cooling water enters in the stove, fine coal in water and the stove and the material of fusion (slag etc.) reaction, produce a large amount of water-gas and burn rapidly and produce a large amount of high temperature and high pressure steams and have little time to discharge and set off an explosion, jeopardize operating personnel's life security and production equipment, properties such as facility; The service time of furnace bottom refractory brick is short, under the normal condition, every maintenance once, building a bottom brick can only use 12-15 days, sometimes only can use 3-5 days, every maintenance once needs 2 days, therefore bring maintenance often, problems such as high material consumption, maintenance cost height such as review time length, production time minimizing, refractory brick; Cooling-water consumption is many etc.For many years, many engineers and technicians once did a lot of researchs, but did not obtain satisfactory result so far for addressing the above problem both at home and abroad.

The purpose of this utility model is to overcome the above-mentioned weak point of prior art and provides a kind of and do not blast, do not endanger operating personnel's life security and do not damage production equipment, facility safely, time between overhauls(TBO) is long, time is few and the production time is long, material consumption is few and maintenance cost is low, cooling-water consumption is few, the high temperature furnace cooling device that can reduce production costs.

The purpose of this utility model reaches by following approach: the utility model is mainly by the cooling water tank around the high temperature furnace body of heater; the refractory brick protective layer of furnace bottom and the unlimited tank below the refractory brick protective layer etc. are partly formed; each partly between from top to bottom connection be: on smooth firm ground or basis; lay girder steel or other high-intensity backing material; its area of placement tank of opening wide bigger on it than hearth area; on its end, re-lay girder steel or other high-intensity backing material; on it; lay the iron plate or the little metallic plate of other coefficient of expansion of several piece level; to stay the expansion slit around them and between each iron plate or other metallic plate; each slit is filled up with cement; on cast iron plate or other metallic plate, build the refractory brick protective layer of furnace bottom; the thickness of refractory brick protective layer keeps the 50-250 mm distance to be advisable with the center in its top to body of heater air port; cooling water tank up and down around the body of heater; be suspended on respectively on the body of heater fixed support all around; air port, body of heater bottom water tank has outlet pipe; cooling water is put into tank one side that we opens, and flows out to circulating water pool through the bottom.

The utility model compared with prior art has the following advantages:

1, can eliminate the furnace bottom explosion accident, realize safety in production, ensure that site operation personnel's life security and national wealth do not suffered a loss.This mainly is because furnace bottom adopts the result of worn-out boiling water groove; after adopting worn-out boiling water groove; when all passage being occurred by effects such as furnace charge mechanical erosion, high temperature melting, chemical attack consumption as the metallic plate of refractory brick protective layer and its bottom or the cement in the slit between the metallic plate; cooling water can not enter in the stove; high temperature sludges in the stove etc. down leak; and the high temperature, the high heat energy that contact generation with water discharge in air rapidly; and when the situation of down leakage appears in the materials such as slag in the stove; can in time find and handle, thereby can avoid exploding at the bottom of the producer.

2, can prolong the service time of high temperature furnace, cooling device originally, every maintenance once can only use 12-15 days, behind employing the utility model, every maintenance once, extend to 60-70 days the service time of high temperature furnace, and only overhaul and need heavily build bottom brick, and need not keep in repair other steel components, so just reduced the maintenance number of times, shorten the repair time, saved recondition expense, increased the production time.

3, save cooling water, the utility model does not have specific (special) requirements to cooling water, therefore the cooling water of emitting in the cooling water tank around the available body of heater is as the cooling water of the worn-out boiling water groove of furnace bottom, the cooling water that goes out from worn-out boiling water concentrated flow, behind circulatory pool, can use repeatedly, in addition, the consumption of cooling water is also than original reduction.

4, be easy to adopt this device, adopt the utility model, remove the change furnace bottom exceptionally, only need be suspended on original cooling water tank around the body of heater on the fixed support, thereby be easy to realize that required time is short, expense is few at original high temperature furnace.

5, simple in structure, maintenance easily.

Description of drawings: Fig. 1 is normal cross-section of the present utility model (B-B) figure.

Fig. 2 is the section of bowing of the present utility model (A-A) figure.

Fig. 3 is side section of the present utility model (C-C) figure.

The utility model is described in further detail below with reference to the embodiment in the accompanying drawing:

The utility model is the cooling device of high temperature furnace; as shown in drawings; it is mainly by the cooling water tank that is suspended on around the high temperature furnace body of heater on the fixed support (1); parts such as the bosh (6) that the refractory brick protective layer (2) of furnace bottom and below the refractory brick protective layer we open are formed; connection between the each several part is on solid ground grading or basis; lay girder steel or other high-intensity backing material (5); the bosh (6) that the placement area is opened than big we of hearth area on it; on its end; lay girder steel or other high-intensity backing material (4); level is laid several piece iron plate or the little metallic plate (3) of other coefficient of expansion on it; stay dilatation joint around iron plate or other metallic plate and between each piece; and fill up with cement; at cast iron plate or above other metallic plate (3); build refractory brick protective layer (2), the centre distance in its top to body of heater air port is advisable with the 50-250 millimeter.Upper and lower cooling water tank around the body of heater, be suspended on respectively on the body of heater fixed support (1) all around, one side of air port, body of heater bottom water tank, cooling water outlet pipe is arranged, cooling water flows into a side of worn-out boiling water groove, by iron plate bottom again from its opposite side flow out, to circulating water pool, the applicant contains the 4M of the high tin slag of arsenic in processing ²After adopting the utility model on the fuming furnace, kept the safety in production continuously 16 months, once take place three times therebetween and leaked slag, but all do not set off an explosion, brought up to 60-70 days by original 12-15 days the service time of a furnace bottom of every block, originally will build furnace bottom 20-22 time every year, now reduce to 5-6 time, reduced 2.5 days off-times in average every month, every square metre of hearth area, every month can voluminous flue dust pure tin more than 11 tons.Can save maintenance furnace bottom expense 900-1100 unit in every month, can save 1850 tons in the new water of cooling in every month, be worth 1000-1200 unit, more than several totals, can obtain more than 230,000 yuan economic benefit the whole year.

Claims (3)

1; the high temperature furnace cooling device of forming by the cooling water tank around the high temperature furnace body of heater and the refractory brick protective layer of furnace bottom etc.; it is characterized in that on solid ground grading or basis; lay girder steel or other high-intensity backing material (5); go up the placement area worn-out boiling water groove (6) bigger in (5) than hearth area; on the end of (6); lay girder steel or other high-intensity backing material (4); the metallic plate (3) that cast iron plate of laying level or other coefficient of expansion are little on it; go up block refractory brick protective layer (2) in (3); cooling water tank up and down around the body of heater; be suspended on respectively on the body of heater fixed support (1) on every side; one side of the lower header bottom around the body of heater; the top of one side of worn-out boiling water groove (6) picks out one and cooling water flow out of pipe.

2, high temperature furnace cooling device as claimed in claim 1 is characterized in that the iron plate of furnace bottom or other metallic plate (3) are spliced by several piece, stays dilatation joint around (3) and between each piece, and each seam fills up with cement.

3, high temperature furnace cooling device as claimed in claim 1 is characterized in that the center in top to body of heater air port of the refractory brick protective layer (2) of furnace bottom should keep certain distance, and this distance is advisable with the 50-250 millimeter.

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