CN103664007B - Preparation device of lime slurry for waste incineration flue gas purification - Google Patents

Preparation device of lime slurry for waste incineration flue gas purification Download PDF

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Publication number
CN103664007B
CN103664007B CN201310648516.2A CN201310648516A CN103664007B CN 103664007 B CN103664007 B CN 103664007B CN 201310648516 A CN201310648516 A CN 201310648516A CN 103664007 B CN103664007 B CN 103664007B
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lime
tank
water
controller
outlet
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CN201310648516.2A
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CN103664007A (en
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吴俊�
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WUXI XUELANG ENVIRONMENTAL TECHNOLOGY Co Ltd
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WUXI XUELANG ENVIRONMENTAL TECHNOLOGY Co Ltd
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Abstract

The invention provides a preparation device of lime slurry for waste incineration flue gas purification, in the preparation process, the temperature detection and control are added, and at the same time, the feeding control is improved and the system accuracy is improved to prepare the lime slurry meeting concentration requirements. The preparation device includes a preparation tank and a lime bin, the preparation tank is provided with an agitator, the upper part of the preparation tank is provided with a water inlet and a lime inlet, the lower part of the preparation tank is provided with an outlet communicated to a storage tank, and the outlet is provided with a preparation tank outlet valve, and the preparation device is characterized in that: a lower outlet of the lime bin is communicated to a lime dosing screw, a frequency changer is externally connected with a feeding screw of the lime dosing screw, a controller is externally connected with frequency changer, a water inlet valve is externally connected with the controller, the water inlet valve is connected with the water inlet through a pipeline, and a water meter is arranged on an outer water pipe of the water inlet valve.

Description

A kind of garbage-incineration smoke purifying lime white preparation facilities
Technical field
The present invention relates to the technical field of lime slurrying, be specially a kind of garbage-incineration smoke purifying lime white preparation facilities.
Background technology
In waste incinerated smoke purification system semidry process, the lime slurry prepared evenly sprays into reaction tower through the spraying gun of high speed rotating.The sour gas such as HCl, SOx, HF in lime white and heat smoke stream react.Flue gas is also cooled to about 150 DEG C ~ 160 DEG C by the lime slurry evaporation of spraying, and generates dry powdered reactant CaCl 2, CaF 2, CaSO 3and CaSO 4deng.This process of cooling also makes Dioxins, furans and heavy metal produce condensation.Therefore lime white is in gas cleaning semidry process, act as important role.But, lime white prepared by unslaked lime, it is a thermopositive reaction, water once fills up by existing lime white after preparation facilities passes through to calculate lime weight, water weight respectively, be then mixed into lime stirs in preparation tank, now in whipping process, it is large that too high temperature makes thermal meter detect error in dipping change, even can cause the weightlessness of weighing balance, namely lime white change in concentration may be caused comparatively large, affect the normal work of spraying gun.
Summary of the invention
For existing above-mentioned defect, the invention provides a kind of garbage-incineration smoke purifying lime white preparation facilities, in its preparation process, increase the detection and control of temperature, meanwhile, improve the control of feed, the precision of raising system, prepares the satisfactory lime slurry of concentration.
A kind of garbage-incineration smoke purifying lime white preparation facilities, it comprises preparation tank, lime silo, described preparation tank is built with agitator, the top of described preparation tank has water-in, enter lime mouth, the below of described preparation tank has outlet to preserving tank, described outlet is provided with preparation tank outlet valve, it is characterized in that: the lower exit port of described lime silo is communicated to lime metering screw, lime mouth is entered described in described lime metering screw is connected to, the external frequency transformer of pressure feeding spiral of described lime metering screw, described frequency transformer external controller, the external water intaking valve of described controller, described water intaking valve connects described water-in by pipeline, the outer water tube of described water intaking valve is provided with water meter scale, the top of described preparation tank is provided with louvre, hot channel is equipped with in described louvre position, exhaust fan is provided with in described hot channel, described exhaust fan connects described controller, temperature-detecting device is equipped with in the bottom of described preparation tank, described temperature-detecting device is circumscribed with described controller, described preparation tank entirety is placed in LOAD CELLS.
After adopting the present invention, it is the singularity of suspension liquid according to lime white, takes into account the control of concentration, by water inlet, enters lime and changes into into water, enters lime, intakes, simultaneously, in its preparation process, increase the detection and control of temperature, make preparation system adapt to the preparation of unslaked lime and white lime, simultaneously, improve the control of feed, improve the precision of system, prepare the satisfactory lime slurry of concentration.
Accompanying drawing explanation
Fig. 1 is structural schematic block diagram of the present invention.
Embodiment
See Fig. 1, it comprises preparation tank, lime silo, preparation tank is built with agitator, the top of preparation tank has water-in, enter lime mouth, the below of preparation tank has outlet to preserving tank, it is characterized in that: the lower exit port of lime silo is communicated to lime metering screw, lime metering screw is connected to into lime mouth, the external frequency transformer of pressure feeding spiral of lime metering screw, frequency transformer external controller, the external water intaking valve of controller, water intaking valve connects water-in by pipeline, the outer water tube of water intaking valve is provided with water meter scale, the top of preparation tank is provided with louvre, hot channel is equipped with in louvre position, exhaust fan is provided with in hot channel, exhaust fan connection control device, temperature-detecting device is equipped with in the bottom of preparation tank, temperature-detecting device is circumscribed with controller, preparation tank entirety is placed in LOAD CELLS.
Its whole control process is as follows:
A, controller receive the artificial concentration value preset, and calculate the water yield and the amount of lime of needs, open water intaking valve;
B, add a certain amount of water after, start agitator;
C, open lime silo, start frequency transformer by controller simultaneously and drive the pressure feeding spiral of lime metering screw, start to supply CaO, high-speed cruising supply most required amount of lime when pressure feeding spiral starts, then low cruise accurately supplies remaining required amount of lime; In preparation process, detected the temperature of preparation tank inside by temperature-detecting device, when temperature height, in preparation tank, add water cooling; After temperature reduces, then close water intaking valve; When temperature is too high, stop pressure feeding spiral simultaneously, start exhaust fan, accelerate heat radiation, until temperature gets back to normal value, continue charging;
D, after required amount of lime all adds, open water intaking valve, water continues to add, and is monitored by water meter scale, until reach required lime white concentration;
E, agitator continue to stir, and make solution stirring even;
F, open preparation tank outlet valve, weigh the quantitative lime white in preparation tank to put into by LOAD CELLS and preserve tank;
G, then start new batch cycle.

Claims (1)

1. a garbage-incineration smoke purifying lime white preparation facilities, it comprises preparation tank, lime silo, described preparation tank is built with agitator, the top of described preparation tank has water-in, enter lime mouth, the below of described preparation tank has outlet to preserving tank, described outlet is provided with preparation tank outlet valve, it is characterized in that: the lower exit port of described lime silo is communicated to lime metering screw, lime mouth is entered described in described lime metering screw is connected to, the external frequency transformer of pressure feeding spiral of described lime metering screw, described frequency transformer external controller, the external water intaking valve of described controller, described water intaking valve connects described water-in by pipeline, the outer water tube of described water intaking valve is provided with water meter scale, the top of described preparation tank is provided with louvre, hot channel is equipped with in described louvre position, exhaust fan is provided with in described hot channel, described exhaust fan connects described controller, temperature-detecting device is equipped with in the bottom of described preparation tank, described temperature-detecting device is circumscribed with described controller, described preparation tank entirety is placed in LOAD CELLS.
CN201310648516.2A 2013-12-06 2013-12-06 Preparation device of lime slurry for waste incineration flue gas purification Active CN103664007B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310648516.2A CN103664007B (en) 2013-12-06 2013-12-06 Preparation device of lime slurry for waste incineration flue gas purification

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Application Number Priority Date Filing Date Title
CN201310648516.2A CN103664007B (en) 2013-12-06 2013-12-06 Preparation device of lime slurry for waste incineration flue gas purification

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CN103664007B true CN103664007B (en) 2015-06-17

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103936306A (en) * 2014-04-15 2014-07-23 米易锦秀机械制造有限公司 Vertical type lime aging equipment
CN104119002A (en) * 2014-07-04 2014-10-29 光大环保技术装备(常州)有限公司 Preparation method and preparation device for lime slurry
CN104147918B (en) * 2014-07-31 2016-05-11 光大环保技术研究院(深圳)有限公司 Process control method and the control system of shared device for flue gas
CN105278567B (en) * 2015-09-28 2018-01-26 光大环保技术研究院(深圳)有限公司 Garbage-incineration smoke purifying control method and system based on fuzzy control
CN105922442A (en) * 2016-05-12 2016-09-07 广州迪斯环保设备有限公司 Anti-blocking lime slurry spraying device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201400640Y (en) * 2009-04-30 2010-02-10 无锡雪浪输送机械有限公司 Lime mortar preparation system screw feeder
CN203625246U (en) * 2013-12-06 2014-06-04 无锡雪浪环境科技股份有限公司 Refuse burning fume purifying lime mortar preparation device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201400640Y (en) * 2009-04-30 2010-02-10 无锡雪浪输送机械有限公司 Lime mortar preparation system screw feeder
CN203625246U (en) * 2013-12-06 2014-06-04 无锡雪浪环境科技股份有限公司 Refuse burning fume purifying lime mortar preparation device

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Address after: 214000 no.2020 Lihu Avenue, Binhu District, Wuxi City, Jiangsu Province

Patentee after: WUXI XUELANG ENVIRONMENTAL TECHNOLOGY Co.,Ltd.

Address before: 214128 Shuangxin economic Park, Taihu street, Binhu District, Wuxi City, Jiangsu Province

Patentee before: WUXI XUELANG ENVIRONMENTAL TECHNOLOGY Co.,Ltd.