CN203007146U - Beam type heat accumulation lime kiln - Google Patents

Beam type heat accumulation lime kiln Download PDF

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Publication number
CN203007146U
CN203007146U CN 201220722894 CN201220722894U CN203007146U CN 203007146 U CN203007146 U CN 203007146U CN 201220722894 CN201220722894 CN 201220722894 CN 201220722894 U CN201220722894 U CN 201220722894U CN 203007146 U CN203007146 U CN 203007146U
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CN
China
Prior art keywords
thermophore
heat
kiln
burner
valve
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Withdrawn - After Issue
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CN 201220722894
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Chinese (zh)
Inventor
贾会平
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Shijiazhuang Xinhua Energy Environmental Protection Technology Co Ltd
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Shijiazhuang Xinhua Energy Environmental Protection Technology Co Ltd
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Priority to CN 201220722894 priority Critical patent/CN203007146U/en
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Publication of CN203007146U publication Critical patent/CN203007146U/en
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Abstract

The utility model relates to a beam type heat accumulation lime kiln which comprises a kiln body, a feed system, an air supply system, a discharge system, a cyclone dust collector, a bag-type dust collector, an induced fan, two heat accumulators, an exhaust gas emission system and a control system, wherein the two heat accumulators are provided with combustion nozzles; the outlet of a lower suction beam is connected to the inlet of the induced fan through the cyclone dust collector and the bag-type dust collector; the outlet of the induced fan is divided into two paths which are respectively connected to the combustion-supporting air inlet of a combustion beam through a valve and the heat accumulators; a gas pipeline and an air pipeline are connected to the combustion nozzles of the heat accumulators; the exhaust gas outlets of the heat accumulators are respectively connected to the exhaust gas emission system through a three-way valve; the two heat accumulators alternately accumulate heat and preheat a gas, and reversing operation is realized through the opening and closing of various valves.The beam type heat accumulation lime kiln disclosed by the utility model can be used for carrying out dust collection, purification and preheating on a high-temperature gas extracted from the lower suction beam as combustion-supporting air by arranging the cyclone dust collector, the bag-type dust collector and the heat accumulators, thereby increasing the combustion temperature of low-heat value fuel, being favorable to the sufficient utilization of the low-heat value fuel and improving the quality of a calcined product.

Description

A kind of beam type accumulation of heat limestone kiln
Technical field
The utility model belongs to building materials, chemical production equipment technical field, relates to a kind of limestone kiln, is specifically related to a kind of beam type accumulation of heat limestone kiln.
Background technology
It is the new technology of lime production with the beam-type limekiln calcined limestone.Beam-type limekiln has the advantages such as energy consumption is low, the lime product quality is good, throughput is strong, turndown ratio is large, is widely used in the lime production of the purposes such as metallurgy, chemical industry.Calcining needs fuel to burn at calcining zone, emits heat heating calcined material.The decomposition temperature of Wingdale is 900 ℃ of left and right, and calcining temperature is generally 1000~1200 ℃.For reaching calcining temperature, produce qualified lime, need the fuel of certain calorific value.Fuel value is low, and burning does not reach the temperature of requirement, and Wingdale can not decompose; Perhaps temperature is low, and decomposition of limestone is incomplete, causes raw burn, the ropy problem of lime product.In the smelter steelmaking process, produce a large amount of blast furnace gases, be valuable fuel source, the calorific value of blast furnace gas is 3000~3400KJ, because calorific value is low, can not be used for calcined limestone, and a large amount of low calorie fuelss can not be fully used.Also need purchase high performance fuel and produce lime, cause the wasting of resources, affect economic benefit.
Application number is that 200810231028.0 application for a patent for invention discloses a kind of " closed type calcium carbide furnace tail gas carries out the method for active lime calcination with fuel as rotary kiln ", this patent application is take calcium carbide stove exhaust as raw material, " the clean tail gas after purifying and coke powder or coal dust are sent in the burner of rotary kiln burning system, as the fuel of lime calcining equipment; Wingdale passes through the preheating of kiln tail hot gas in shaft preheater after, and realize predecomposition, enter the firing system of rotary kiln; "." participate in cooling air and enter the rotary kiln burning as a wind, burning through the air participation of preheating has made up the low deficiency of closed calcium carbide furnace tail gas calorific value ".This patent application uses the cooling air after preheating to be combustion air, has improved temperature of combustion, but fuel gas has not been carried out preheating, still need add coal dust or the coke powder of high heating value in combustion processes.
Summary of the invention
For overcoming the deficiencies in the prior art, the utility model provides a kind of beam type accumulation of heat limestone kiln, utilizes under the thermophore preheating suction bar to deflate and makes combustion-supporting gas, improves the temperature of combustion of low calorie fuels, take full advantage of the low calorie fuels resource, improve the quality of calcination product.
The utility model beam type accumulation of heat limestone kiln comprises kiln body, feed system, air feed system, discharge system, exhaust emission system and Controlling System, is provided with opening for feed, preheating zone, calcining zone, cooling zone and discharge port in the kiln body.The top of preheating zone is provided with suction bar, and calcining zone is provided with two-layer burning beam, and the middle part of cooling zone is provided with lower suction bar.The limestone kiln is provided with tornado dust collector, sack cleaner, induced draft fan, No. 1 thermophore and No. 2 thermophore, and No. 1 thermophore and No. 2 thermophore are respectively equipped with burner, waste gas outlet, are preheated gas inlet and preheating gas outlet.Lower suction bar outlet is connected to the induced draft fan entrance by tornado dust collector, sack cleaner.Induced draft fan outlet is divided into two-way, leads up to the 1st valve, No. 1 thermophore and the 3rd valve to be connected to the combustion air entrance of burning beam, and another road is connected to the combustion air entrance of burning beam by the 2nd valve, No. 2 thermophore and the 4th valve.Gas line and airline are connected respectively to the burner of No. 1 thermophore and No. 2 thermophore, and the waste gas outlet of No. 1 thermophore and No. 2 thermophore is connected to exhaust emission system by T-valve respectively.
The heat storage of thermophore is spherule or melikaria, and the material of heat storage is pottery, ferrous materials or high aluminium material.The kiln wall of calcining zone is provided with peripheral burner, and peripheral burner is geseous fuel burner, liquid fuel burner or solid combustion mouth, or the combination of above-mentioned burner.
The utility model beam type accumulation of heat limestone kiln is by tornado dust collector, sack cleaner and thermophore, high-temperature gas after the cool lime of lower suction bar extraction is carried out udst separation, gas is made the combustion air of burning beam after the thermophore preheating with burner, improved the temperature of combustion of low calorie fuels, be conducive to taking full advantage of of low calorie fuels, optimize the calcining effect, improved the quality of calcination product.Make combustion air after after the cool lime of lower suction bar extraction, high-temperature gas process tornado dust collector and sack cleaner purify, reduce the discharging of waste gas, be conducive to environment protection.
Description of drawings
Fig. 1 is the schematic flow sheet in the utility model beam type accumulation of heat limestone kiln;
Fig. 2 is the structural representation of thermophore.
Wherein:
1-feed system, 2-upper suction bar, 3-preheating zone, 4-burning beam, 5-calcining zone, 6-kiln body, 7-lower suction bar, 8-cooling zone, 9-discharge port, 10-tornado dust collector, 11-sack cleaner, 12-induced draft fan, the 13-the 2 valve, 14-No. 2 thermophore, 15-burner, the 16-the 4 valve, the 17-the 1 valve, 18-T-valve, 19-No. 1 thermophore, the 20-the 3 valve, 21-waste gas, 22-be preheated the gas inlet, the outlet of 23-preheating gas, 24-heat storage.
Embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated.
The utility model beam type accumulation of heat limestone kiln comprises kiln body 6, feed system 1, air feed system, discharge system, tornado dust collector 10, sack cleaner 11, induced draft fan 12, No. 1 thermophore 19, No. 2 thermophore 14, exhaust emission system and Controlling System as shown in Figure 1.Be provided with opening for feed, preheating zone 3, calcining zone 5, cooling zone 8 and discharge port 9 in the kiln body.The top of preheating zone is provided with 2 upper suction bars 2, and the middle part of cooling zone is provided with 3 lower suction bars 7.Calcining zone is provided with two-layer burning beam 4, and the upper strata is provided with 4 burning beams, and lower floor is provided with 3 burning beams, upper and lower layer burning beam staggered arrangement.As shown in Figure 2, No. 1 thermophore and No. 2 thermophore are respectively equipped with burner 15, waste gas outlet 21, are preheated gas inlet 22 and preheating gas outlet 23, and the heat storage 24 of thermophore is spherule, and the material of heat storage is pottery.Lower suction bar outlet is connected to the entrance of induced draft fan 12 by tornado dust collector 10, sack cleaner 11; The induced draft fan outlet is divided into two-way, and the preheating gas outlet 23 that is preheated 22, No. 1 thermophore in gas inlet that the 1st valve 17 of leading up to is connected to No. 1 thermophore is connected to the combustion air entrance of burning beam 4 by the 3rd valve 20; Another road is connected to the gas inlet that is preheated of No. 2 thermophore by the 2nd valve 13, the preheating gas outlet of No. 2 thermophore is connected to the combustion air entrance of burning beam by the 4th valve 16.Gas line and airline are connected respectively to 15, No. 1 thermophore of burner of No. 1 thermophore and No. 2 thermophore and the waste gas outlet 21 of No. 2 thermophore is connected to exhaust emission system by T-valve 18 respectively.
The operation scheme in the utility model beam type accumulation of heat limestone kiln is, cooling air enters the cooling zone cool lime through cooling blower from the bottom in limestone kiln.High-temperature gas after cool lime is under the suction function of induced draft fan 12, extracted out by lower suction bar 7, carry out purifying and dedusting through tornado dust collector 10, sack cleaner 11, make combustion air by preheating gas outlet 23 to the combustion air entrance of upper and lower floor burning beam 4 in No. 1 thermophore 19, No. 2 thermophore 14 preheatings.Two thermophore hocket accumulation of heat and and preheating gas, when No. 1 thermophore 19 accumulation of heat, be preheated gas through the 2nd valve 13, No. 2 thermophore 14 and the 4th valve 16 to burning beam combustion-supporting gas entrance; The burner of No. 1 thermophore burns, and the heat storage of No. 1 thermophore of flue gas heating of generation discharges to exhaust emission system by waste gas outlet 21 and T-valve 18.The burner of rear No. 2 thermophore of commutating burns, and the heat storage of No. 2 thermophore is carried out accumulation of heat; Be preheated gas through the 1st valve 17, No. 1 thermophore and the 3rd valve 20 to burning beam combustion-supporting gas entrance, the heat storage in No. 1 thermophore is emitted the heat preheating gas.Control the switch operation of No. 1 thermophore and No. 2 thermophore by the temperature of setting the thermophore waste gas outlet, design temperature is 70~150 ℃, and actual temp is set according to processing requirement.Whole process is controlled automatically, realizes switch operation by each valve opening and closing.

Claims (4)

1. beam type accumulation of heat limestone kiln, comprise kiln body (6), feed system (1), air feed system, discharge system, exhaust emission system and Controlling System, be provided with opening for feed in the kiln body, preheating zone (3), calcining zone (5), cooling zone (8) and discharge port (9), the top of described preheating zone is provided with suction bar (2), calcining zone is provided with two-layer burning beam (4), the middle part of cooling zone is provided with lower suction bar (7), it is characterized in that: described limestone kiln is provided with tornado dust collector (10), sack cleaner (11), induced draft fan (12), No. 1 thermophore (19) and No. 2 thermophore (14), described No. 1 thermophore (19) and No. 2 thermophore (14) are respectively equipped with burner (15), waste gas outlet (21), be preheated gas inlet (22) and preheating gas outlet (23), described lower suction bar outlet is connected to the induced draft fan entrance by tornado dust collector, sack cleaner, the induced draft fan outlet is divided into two-way, leading up to the 1st valve (17), No. 1 thermophore and the 3rd valve (20) is connected to the combustion air entrance of burning beam, and another road is connected to the combustion air entrance of burning beam by the 2nd valve (13), No. 2 thermophore and the 4th valve (16), gas line and airline are connected respectively to the burner (15) of No. 1 thermophore and No. 2 thermophore, and the waste gas outlet of No. 1 thermophore and No. 2 thermophore is connected to exhaust emission system by T-valve (18) respectively.
2. beam type accumulation of heat according to claim 1 limestone kiln, it is characterized in that: the heat storage of described thermophore (24) is spherule or melikaria, the material of described heat storage is pottery, ferrous materials or high aluminium material.
3. beam type accumulation of heat according to claim 1 limestone kiln, it is characterized in that: the kiln wall of described calcining zone (5) is provided with peripheral burner.
4. beam type accumulation of heat according to claim 1 limestone kiln, it is characterized in that: described peripheral burner is geseous fuel burner, liquid fuel burner or solid combustion burner, or the combination of above-mentioned burner.
CN 201220722894 2012-12-25 2012-12-25 Beam type heat accumulation lime kiln Withdrawn - After Issue CN203007146U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220722894 CN203007146U (en) 2012-12-25 2012-12-25 Beam type heat accumulation lime kiln

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220722894 CN203007146U (en) 2012-12-25 2012-12-25 Beam type heat accumulation lime kiln

Publications (1)

Publication Number Publication Date
CN203007146U true CN203007146U (en) 2013-06-19

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CN 201220722894 Withdrawn - After Issue CN203007146U (en) 2012-12-25 2012-12-25 Beam type heat accumulation lime kiln

Country Status (1)

Country Link
CN (1) CN203007146U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102992661A (en) * 2012-12-25 2013-03-27 石家庄新华能源环保科技股份有限公司 Beam type heat storage lime kiln
CN103922617A (en) * 2014-04-15 2014-07-16 石家庄新华能源环保科技股份有限公司 Combustion beam using low-heating-value fuel and solid fuel
CN108863114A (en) * 2018-07-06 2018-11-23 沈阳化工大学 A kind of method that the light-burned process waste heat of magnesite recycles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102992661A (en) * 2012-12-25 2013-03-27 石家庄新华能源环保科技股份有限公司 Beam type heat storage lime kiln
CN102992661B (en) * 2012-12-25 2014-05-21 石家庄新华能源环保科技股份有限公司 Beam type heat storage lime kiln
CN103922617A (en) * 2014-04-15 2014-07-16 石家庄新华能源环保科技股份有限公司 Combustion beam using low-heating-value fuel and solid fuel
CN108863114A (en) * 2018-07-06 2018-11-23 沈阳化工大学 A kind of method that the light-burned process waste heat of magnesite recycles

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AV01 Patent right actively abandoned

Granted publication date: 20130619

Effective date of abandoning: 20140521

RGAV Abandon patent right to avoid regrant