CN1712874A

CN1712874A - Kiln for generating steam by waste heat of firing red bricks and limes

Info

Publication number: CN1712874A
Application number: CN 200510031885
Authority: CN
Inventors: 胡昭远
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-18
Filing date: 2005-07-18
Publication date: 2005-12-28

Abstract

A furnace for producing steam by use of the afterheat after calcining red bricks or lime has a main body consisting of a hearth box, an annular cylindrical water tank with a water inlet tube and a steam outlet tube, and an external insulating layer.

Description

Produce the stove of steam with the waste heat of baking red bricks or lime

Technical field

The present invention relates to a kind of stove that burns common brick or lime.

Background technology

The general employing continuously of the at present more advanced common brick or the production of lime produced, be that raw material constantly add from the stove top, finished product is constantly come out of the stove from furnace bottom, blank begins to heat up after entering burner hearth, afterwards by ignition combustion, along with finished product is constantly come out of the stove, the blank of burning moves down gradually, blank bakes substantially during instantly to the burner hearth middle and lower part, this zone is the highest temperature zone in the burner hearth, and more than temperature can reach and spend 1,600 more, combustible wherein burnouted substantially, temperature no longer rises, product needed begins cooling and comes out of the stove thereafter subsequently, and heat a large amount of in the temperature-fall period need outwards be distributed, because common brick and lime heat conductivility are poor, temperature height in the burner hearth in addition, therefore the time remaining of product loses heat is longer, and product is come out of the stove from beginning to cool to cooling, and this process will outwards be emitted a large amount of heat, these hot types all slattern in atmosphere in the prior art, mean that for the quantity-produced stove this waste is long-term continuing.

Summary of the invention

The object of the present invention is to provide a kind of waste heat that makes full use of baking red bricks or lime to produce the stove of steam.

Stove of the present invention comprises body of heater, comprises a burner hearth in the described body of heater at least, and the burner hearth periphery is an annular tubular water tank, and this water tank is outward the heat-insulation layer that fills into insulation material, and the bottom of water tank communicates with a water inlet pipe, and top communicates with a steam outlet pipe.

When burning stove, because the product temperature that makes in the burner hearth is still very high, particularly the product temperature near highest temperature zone is higher, and they need outside distribute heat and cool off.The water tank that the present invention is provided with outside burner hearth, for the heat radiation of the product that bakes in the stove provides very favorable condition, the heat that product outwards distributes is all passed to water tank by hearth wall, and water tank is outer because insulation material is arranged, thereby heat is absorbed by water tank substantially.Water in the water tank, the distribution of stripping temperature are very favourable to common brick or lime sintering procedure, in the bottom of water tank is inlet segment, temperature is minimum, and the product of burner hearth foot is about to come out of the stove, though be the low-temperature space in the burner hearth, but still needing cooling, the cold water that enter in the water tank this moment just helps them to lower the temperature.Rise in the water heat absorption back of water tank bottom, vaporization substantially when near the burner hearth highest temperature zone.Thereby can not have a negative impact to the combustion zone more than the highest temperature zone in the burner hearth, on the contrary in the continuous adding of roof of the furnace owing to raw material, its temperature is minimum, and temperature is the highest (steam section) in this section water tank, the temperature of roof of the furnace can effectively be compensated, accelerate the drying rate of raw material, shorten the burning time of raw material.Therefore water tank has not only made full use of the product waste heat, and because it makes it all to have played positive role in whole firing process to the cooling of burner hearth bottom with to the intensification of roof of the furnace, can effectively improve the output capacity of product.The steam that the present invention produces can be used to generating, also can be used for heating etc., the inventor draws following result by repetition test: the stove of the present invention steam that 5Kg quick lime produced of whenever coming out of the stove can be sent out 1 degree, whenever the steam that the 2 blocks of common bricks of coming out of the stove are produced can be sent out 1 degree, thereby the present invention compares with traditional stove, except the repertoire that can reach traditional stove, under the situation that does not increase fuel and cost of labor, can also obtain a large amount of steam energies, and can make the output capacity of common brick or lime improve more than 5%.

Description of drawings

Fig. 1 is a structural representation of the present invention.

Fig. 2 is Fig. 1 vertical view.

Fig. 3 is the cutaway view of Fig. 1 along the A-A line.

The specific embodiment

Present embodiment is a lime stove, and its output steam is used for the Turbo-generator Set for 1500KW.

From Fig. 1 and Fig. 2 as can be seen, present embodiment comprises a body of heater 1, is provided with 12 bores in this body of heater and is 1500mm, highly is the burner hearth 2 of 6000mm, these burner hearths become in-line to arrange, each burner hearth has all enclosed the water tank 3 of a belt tubular outward, and the interior empty thickness of water tank 3 is 120mm, volume 4.6m ³The inwall of each water tank preferably is communicated with some circulation pipes 4, each circulation pipe 4 is linked to be by a person in charge 41 and some arms 42, circulation pipe 4 communicates with water tank 2 by its two ends and all arms 42, not only the water in the water tank 3 is played the effect of heat exchange, simultaneously water tank 3 and hearth wall are played reinforcement, the adjacent circulation tube pitch is preferably the length of a brick, with the convenient hearth wall of building, the welding position of circulation pipe 4 two ends and water tank answers the bottom (or top) of dried up case 3 that certain distance is arranged, especially the lower end must be higher than the bottom of water tank 3, in case the sediment of water tank bottom stops up circulation pipe 4, the bottom of water tank 2 all respectively communicates with water inlet pipe 6 by a water valve 61, and top respectively communicates with steam outlet pipe 7 by a steam valve 71.The outside of each water tank 2 is that heat-insulation layer 5 is filled into by insulation material (perlite), is body of heater 1 outside the heat-insulation layer 5, and body of heater 1 is an one with whole burner hearth collection, makes each that a raw material district 10 all be arranged above the burner hearth, and finished product district 11 and product outlet 12 are all arranged below.

In conjunction with Fig. 3 as can be seen the antetheca of finished product plug for outlet 12 and rear wall respectively be obliquely installed steel bar screen 8, two screens and formed V-shaped part, be obliquely installed a steel plate 9 below, finished product will be fallen steel plate from V-shaped part and slide.The method that finished product is come out of the stove is the method for coming out of the stove of available prior art also.

The lime daily output of this lime stove is 180 tons, and the steam day generated energy of its generation is 30,000 6 thousand degree, this shows that how considerable the economic benefit that the present invention brings is.

Burner hearth quantity in the body of heater of the present invention and size can be determined voluntarily according to the size and the purposes of quantity of steam needs, such as us steam is used for 750 kilowatts of steam turbine generators, if still adopt the size of above-mentioned embodiment just to need, and it is just much of that to be used for one group of burner hearth of others possibility with 6 groups of burner hearths.The arrangement of these burner hearths in body of heater can specifically be determined according to the place, builds the in-line that surely belongs to of most convenient certainly and arranges.

The present invention is used to burn that the structure of the stove of common brick and above-mentioned lime stove is basic identical, and just burner hearth and water tank height will lack about 1/4, and finished product plug for outlet structure and traditional Brick Kiln are identical.Build very simple.

Claims

1, produces the stove of steam with the waste heat of baking red bricks or lime, comprise a body of heater (1), it is characterized in that comprising at least in the described body of heater (1) burner hearth (2), burner hearth (2) periphery is an annular tubular water tank (3), this water tank is outward the heat-insulation layer (5) that fills into insulation material, the bottom of water tank (3) communicates with a water inlet pipe (6), and top communicates with a steam outlet pipe (7).

2, the waste heat with baking red bricks or lime according to claim 1 is produced the stove of steam, it is characterized in that the inwall of described water tank is communicated with some circulation pipes (4), and described circulation pipe is fixed in the hearth wall.