CN2657757Y - Spray device of active carbon for purifying smoke of garbage incineration - Google Patents
Spray device of active carbon for purifying smoke of garbage incineration Download PDFInfo
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- CN2657757Y CN2657757Y CN 200320106830 CN200320106830U CN2657757Y CN 2657757 Y CN2657757 Y CN 2657757Y CN 200320106830 CN200320106830 CN 200320106830 CN 200320106830 U CN200320106830 U CN 200320106830U CN 2657757 Y CN2657757 Y CN 2657757Y
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- active carbon
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- injection apparatus
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Abstract
An activated carbon spraying device for flue gas purification in refuse incineration mainly reduces the discharge concentration of dioxin and heavy metal mercury in the flue gas and consists essentially of a material loading device, an activated carbon storage house, a metered material feeding device and a spraying device, wherein the material loading device communicates with the a storing device, which is arranged above the metered material feeder; the upper part of the storing device is a cylinder and the lower part is a cone which is provided with a bridging breaker and an air blasting device; a gate valve is provided between the storage house and the metered material feeder; the lower end of the metered material feeder connects with a mixer, the throat of which connects with a blower. The utility model can effectively reduce the discharge concentration of dioxin and heavy metal mercury (Hg) in the incineration flue gas.
Description
Technical field
The utility model relates to a kind of consumer waste incineration smoke eliminator, especially reduces the garbage-incineration smoke purifying active carbon injection apparatus of the concentration of emission of dioxin and heavy metal Hg in the incineration flue gas.
Background technology
The dioxin the most malicious in the world material of being known as, its toxicity is equivalent to 1000 times of potassium cyanide, even under very micro-situation, when absorbing for a long time, also easily cause cancer, deformity etc., therefore the discharging of strict control dioxin is vital in incineration process of domestic garbage.The turbulivity (Turbullence) of " 3T " incineration temperature (Temperature) when mainly burning by control in burning process, the high time of staying of flue gas (Time), flue gas suppresses the generation of dioxin, should shorten flue gas simultaneously as far as possible and be in the interior time of 300-500 ℃ of temperature field, to avoid the synthetic again of dioxin, however, the dioxin-like chemical that still contains some in the discharging flue gas.For the large-scale incinerator that works well; as adopt sack cleaner to purify; the concentration of emission of dioxin generally can satisfy existing national standard; but environmental protection standard and protection environmental with regard to China's increasingly stringent are considered; further strengthen removing still very necessary, very urgent to the absorption of dioxin-like chemical.
Incineration plant operating experience also shows, and is all very good to the removal effect of most of heavy metals in sack cleaner and semidry method extracting tower and time spent, and it is low more to enter the flue-gas temperature of sack cleaner, and removal effect is good more.But in actual motion, for keeping the operate as normal of sack cleaner, flue-gas temperature can not be lower than below zero point, condenses in order to avoid cause acid mist, causes the filter bag corrosion, or blocks because of condensation vapor makes whole filter bag.But the mercury metal is difficult for condensing under higher temperature, thereby is difficult to all be removed by the pocket type deduster because its saturated vapor pressure is higher.
In sum, existing technological means does not also adapt at present and social from now on actual requirement of going up environmental protection the result of the dioxin in heavy metal Hg and the flue gas.
Summary of the invention
Technical problem to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, a kind of garbage-incineration smoke purifying active carbon injection apparatus is provided, it is applied to the consumer waste incineration flue gas purification system, mainly is to reduce the concentration of emission of dioxin and heavy metal Hg (Hg) in the incineration flue gas.
The technical solution of the utility model is this garbage-incineration smoke purifying active carbon injection apparatus, it is characterized in that it mainly is made up of feeding device, active carbon warehouse, metering feeding device, injection apparatus; Feeding device communicates with storage device, and storage device is a full-closed structure, and it is arranged on the top of metering batcher, its top is cylinder, the bottom is a cone, is provided with bridge formation destructor and air blown device at conical section, is provided with slide valve between warehouse and the metering batcher; The metering batcher is by comprising that dispenser, setting gauge, feed hopper and level switch form; Dispenser adopts horizontal teeth slot type disc structure and is driven by the variable-frequency motor direct connection, and this disk one side is positioned at feed hopper, and opposite side setting gauge in injection line cooperates with multigraph press; Metering batcher lower end connects blender, and the throat of this blender connects blower fan.
The tank car discharge nozzle links to each other to adapt to the needs of active carbon in bulk with active carbon warehouse feeding tube in the described feeding device.Described feeding device also can be for being linked to each other with warehouse by storehouse pump, storehouse stock bucket and corresponding pipeline, to adapt to the needs of packed active carbon.
Described warehouse is established high, medium and low three grades of level-sensing devices, and the warehouse outlet is provided with the gate-type switch valve.
Described blender is a venturi mixer.
The beneficial effects of the utility model are after constant feeder starts, activated carbon powder just enters pipeline and mixes with compressed air from feed hopper continuously, form active carbon powder air-flow at a high speed, at the nozzle place, active carbon powder air-flow and flue gas collide and produce strong turbulence effects, both fully mix, the activated carbon powder that enters in the flue moves with air-flow and absorption dioxin and metal wherein, adsorbed by filter bag during through sack cleaner, filter bag filters in the flue gas process, the activated carbon powder that is deposited on the filter bag adsorbs a certain amount of dioxin and heavy metal once more, is removed with filter bag ash removal at last.
Consequently:
1, feed accurate measurement.The volume of disk teeth groove is certain, and then the feeding coal of disk revolution is certain; The motor direct connection drives, and the revolution of disk is certain in the unit interval, so batcher feed accurate measurement changes motor speed by frequency converter, can realize the continuous adjustment of feeding coal.
2, give the amount adjusting range big.Dispenser adopts variable-frequency motor to drive, and the rotational speed regulation scope is big, so the adjustment of feeding coal is corresponding bigger.
3, system architecture is simply compact.Between the motor of dispenser and reductor, reductor and the feed disk, all adopt associated mode between the motor of setting gauge and reductor, reductor and the material toggling disk, make whole batcher space structure compactness, installation and maintenance are convenient.
4, flexible operation is reliable.1 batcher can be provided with 1-4 dispenser, realizes the multichannel feed, and each road feed is controlled separately, both can move simultaneously, also can operate separately; Roots blower provides compressed air, and flow and constant pressure cooperate with batcher, keeps stable powder gas mixing ratio, pipeline blockage can not take place.
Description of drawings
Fig. 1 is the utility model workflow sketch:
Fig. 2 is the utility model active carbon warehouse shape assumption diagram;
Fig. 3 is the utility model constant feeder internal structure schematic diagram.
Among the figure 1, feeding device 2, active carbon warehouse 3, constant feeder 4, flue 5, No. two flues 6, blower fan 7, No. two blower fans 8, standby fan 21, sack cleaner 22, level switch 23, warehouse body 24, air blown device 25, bridge formation destructor 26, slide valve 31, feed hopper 32, level switch 33, dispenser 34, setting gauge.
The specific embodiment
This charcoal absorption system mainly is made up of feeding device, active carbon storage device, metering feeding device, injection apparatus etc., as its overall work process of Fig. 1 is:
The Powdered Activated Carbon that enters factory at first is delivered to active carbon warehouse 2 by feeding device 1, active carbon powder in the warehouse enters injection apparatus after 3 meterings of metering device constant feeder, by injection apparatus the activated carbon powder art is sprayed into incinerator sack cleaner 21 preceding flues by blower fan 6,7,8 at last.Spray into Powdered Activated Carbons in the flue 4,5 and will adsorb dioxin-like chemical and heavy metal in the flue gas, adsorbed by filter bag during with flow of flue gas to sack cleaner, filter bag is when filtering flue gas, the micro activated carbon particle that is deposited on the filter cloth surface adsorbs a certain amount of dioxin and heavy metal again, is removed with filter bag ash removal at last.
(1) system works flow process sketch
(2) active carbon material loading
Active carbon can add the active carbon warehouse by dual mode after entering factory:
A, active carbon in bulk:
Movable carbon powder in bulk generally by special-purpose tank car transportation, can link to each other the active carbon warehouse feeding tube of tank car discharge nozzle and reservation, and the Pneumatic conveyer that utilizes tank car to carry is delivered to warehouse with active carbon powder.This kind material-uploading style has fast, the labour-saving characteristics, but the special-purpose tank car of transportation active carbon powder must be arranged.This special-purpose tank car is a prior art.
B, packed active carbon:
At present, the supply of domestic active carbon powder mostly is packed form, and for adapting to this situation, native system also has been equipped with packed Powdered Activated Carbon feeding device.This device mainly is made up of storehouse pump, storehouse stock bucket and corresponding pipe-line system.Its course of work is: active carbon advances after the factory artificial broken bag and pours in the stock bucket of storehouse, hopper fill the back with the plate sealing in case the moisture absorption, the activated carbon powder art inflow pump storehouse in the hopper is delivered to the active carbon warehouse by storehouse pump strength.Separate by sealed butterfly valve between storehouse pump and hopper.
(3) active carbon stores
As Fig. 2.Stand-by active carbon powder is stored in the warehouse, and warehouse is established high, medium and low three grades of level-sensing devices.High charge level detects and is used for control material level superelevation warning when warehouse is reinforced; The normal operation of middle material level control; Low material level is used for lacking the material warning in the storehouse and prompting is reinforced in warehouse.Warehouse outlet is provided with the gate-type switch valve, can close the warehouse outlet in overhaul of the equipments or when not moving.Warehouse body 23 is arranged on the top of metering batcher 3, and its top is cylinder, and the bottom is a cone, is provided with bridge formation destructor 25 and air blown device 24 at conical section, is provided with slide valve 26 between warehouse and the metering batcher.Level switch 22 is arranged on the top of warehouse body 23.
Because active carbon is the moisture absorption very easily, therefore damp-proof device must be set, in native system, taked the following measure prophylactic activity charcoal moisture absorption and discharging unimpeded:
A, warehouse are the totally-enclosed form, contact and the moisture absorption with outside air to avoid active carbon, by insulation storehouse inwall dewfall when avoiding difference variation big.
B, at the warehouse conical section pneumatic rapping apparatus is set, the destructor 25 of promptly building bridge.Continue rapping by intermittence, make attached to the active carbon on the bulkhead to come off, and certain anti-" bridge formation " effect is arranged the warehouse wall.
C, feed the pulse compression air of dried and clean by air blown device 24, prevent active carbon, and make in the storehouse active carbon maintenance loose, be easy to discharging at warehouse conical section " bridges formation " at the warehouse conical section.The compressed air that sprays into simultaneously makes and is slight positive pressure state in the storehouse, can effectively stop the external humidification air to enter in the warehouse.
(4) active carbon metering
As Fig. 3.This device adopts disc type metering batcher that active carbon is measured.The metering batcher is by comprising that dispenser 33, setting gauge 34, feed hopper 31 and level switch 32 form; Dispenser adopts horizontal teeth slot type disc structure and is driven by the variable-frequency motor direct connection, and this disk one side is positioned at feed hopper, and opposite side setting gauge in injection line cooperates with multigraph press; Metering batcher lower end connects blender.This equipment is by the teeth groove feed on the feed disk, the feed amount of each teeth groove is constant, by the rotating speed of frequency converter change disk drive motors, can realize the accurate measurement of low dose of material, through the conversion of control module, can on digital displaying meter, demonstrate the instant emitted dose of active carbon.Disk metering batcher is compared with spiral metering batcher, has following characteristics:
A, metering accurately, particularly for the material of low dose, spiral metering batcher is difficult to realize accurate measurement.
B, active carbon easily are extruded caking in spiral metering batcher, influence jeting effect, and disk metering batcher passes through the teeth groove feed, and material is not squeezed in teeth groove, can realize accurate measurement under the situation that keeps material loosening.
C, a disk metering batcher can be realized the multichannel feed simultaneously, also can be easy to realize the flexible and changeable method of operation to road feed wherein.
(5) active carbon sprays
The quantitative active carbon powder that is provided by disk metering batcher enters venturi mixer.Pressure-air by the Roots blower preparation produces negative pressure at a high speed by venturi mixer throat the time, active carbon is sucked, active carbon that is inhaled into and pressure-air spray into the extracting tower rear pass through conveyance conduit and nozzle together, can produce strong turbulence effects behind the activated carbon powder later and decadent stage of a school of thought that sprays into and the flue gas " collision " at a high speed, active carbon powder and flue gas are fully mixed.
Active carbon sprays in the system is provided by Roots blower with compressed air, roots blower can produce big air quantity, therefore can adopt the bigger injection pipe of diameter (Φ 80mm), also can keep higher " gas-solid mixing ratio " in the pipeline simultaneously, therefore the pipeline clogging can not take place.If adopt conventional air compressor machine (as screw, piston type etc.) air feed, because tolerance is less, " gas-solid mixing ratio " is less in the pipeline, and the injection pipe diameter is thinner, and blockage problem often takes place.
(6) active carbon sprays into selection a little
According to the difference of flue gas purifying technique, the active carbon specking can have various selections, and to semidry method extracting tower+sack cleaner flue gas purifying technique, active carbon sprays into and a little mainly contains following two kinds of selections:
1. when the flue between semidry method extracting tower and sack cleaner (when referring generally to less than 3 times pipe diameter) more in short-term, the gas approach that should be chosen in the semidry method extracting tower sprays into active carbon.
2. when the flue between extracting tower and the sack cleaner is longer, should at first consider to select extracting tower to be exported to flue spraying into a little between the sack cleaner inlet as active carbon, and try one's best by the outlet side of semidry method extracting tower, to increase the time of staying of active carbon in flue.
One section long straight vertical pipeline section is arranged between semidry method extracting tower of the present utility model and the sack cleaner, therefore in this engineering, will select straight length after the semidry method extracting tower exit bend as the spraying into a little of active carbon, spray into direction vertical substantially with the flow of flue gas direction (being partial to 5 ° in flow of flue gas direction).
(7) active carbon protection against the tide, fire prevention, explosion-proof
Active carbon is the moisture absorption very easily, so the whole operation system should be in sealing state, particularly warehouse substantially, behind the active carbon of packing into should after should be immediately fully and isolate from outer air, storehouse inwall dewfall in the time of also can taking the measure of warehouse insulation to avoid difference variation big in addition.Reinforced as carrying with air, must adopt dry pressure-air.When system temporarily quits work, should make the active carbon spray clean in the later flow process of warehouse outlet valve, in order to avoid blocking pipe and equipment.Have employing filling inert gas in warehouse to prevent the way of fire and blast abroad, the Ningbo weather is moistening, for reducing operating cost, can not adopt this way, but fire should be forbidden in the scene.
The related unspecified structure of the utility model has been prior art in this area.
Claims (5)
1, garbage-incineration smoke purifying active carbon injection apparatus is characterized in that it mainly is made up of feeding device, active carbon warehouse, metering feeding device, injection apparatus; Feeding device communicates with storage device, and storage device is a full-closed structure, and it is arranged on the top of metering batcher, its top is cylinder, the bottom is a cone, is provided with bridge formation destructor and air blown device at conical section, is provided with slide valve between warehouse and the metering batcher; The metering batcher is by comprising that dispenser, setting gauge, feed hopper and level switch form; Dispenser adopts horizontal teeth slot type disc structure and is driven by the variable-frequency motor direct connection, and this disk one side is positioned at feed hopper, and opposite side setting gauge in injection line cooperates with multigraph press; Metering batcher lower end connects blender, and the throat of this blender connects blower fan.
2, garbage-incineration smoke purifying active carbon injection apparatus according to claim 1 is characterized in that the tank car discharge nozzle links to each other with active carbon warehouse feeding tube in the described feeding device.
3, garbage-incineration smoke purifying active carbon injection apparatus according to claim 1 is characterized in that described feeding device is linked to each other with warehouse by storehouse pump, storehouse stock bucket and corresponding pipeline.
4, according to claim 1 or 2 or 3 described garbage-incineration smoke purifying active carbon injection apparatus, it is characterized in that described warehouse establishes high, medium and low three grades of level-sensing devices, the warehouse outlet is provided with the gate-type switch valve.
5, garbage-incineration smoke purifying active carbon injection apparatus according to claim 4 is characterized in that described blender is a venturi mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320106830 CN2657757Y (en) | 2003-11-10 | 2003-11-10 | Spray device of active carbon for purifying smoke of garbage incineration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320106830 CN2657757Y (en) | 2003-11-10 | 2003-11-10 | Spray device of active carbon for purifying smoke of garbage incineration |
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| CN2657757Y true CN2657757Y (en) | 2004-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320106830 Expired - Fee Related CN2657757Y (en) | 2003-11-10 | 2003-11-10 | Spray device of active carbon for purifying smoke of garbage incineration |
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| CN (1) | CN2657757Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798126A (en) * | 2012-08-31 | 2012-11-28 | 张家港长力机械有限公司 | Feed device used in garbage burning reaction furnace |
| CN102965194A (en) * | 2012-11-16 | 2013-03-13 | 湖南林之神生物科技有限公司 | Wooden activated carbon adding device of camellia oleosa seed oil refining process |
| CN104307355A (en) * | 2014-10-24 | 2015-01-28 | 无锡雪浪环境科技股份有限公司 | Reaction agent feeding device for deacidifying by dry method |
| CN104492224A (en) * | 2014-11-28 | 2015-04-08 | 浙江菲达科技发展有限公司 | Purifying device for flue gas from waste incineration |
| CN104879769A (en) * | 2015-06-08 | 2015-09-02 | 蔡克文 | Pulverized lignite feeder |
| CN107309264A (en) * | 2017-07-17 | 2017-11-03 | 武汉都市环保工程技术股份有限公司 | A kind of organic polluted soil dystopy thermal desorption repair system and method |
| CN108163563A (en) * | 2017-12-18 | 2018-06-15 | 安徽科技学院 | Adsorb the Weighing type activated carbon intelligence charging process and its charging system of dioxin |
| CN109876598A (en) * | 2019-03-22 | 2019-06-14 | 江苏东本环保工程有限公司 | The technique that active carbon conveys spraying system and its purifying smoke |
| WO2019144525A1 (en) * | 2018-01-29 | 2019-08-01 | 中冶长天国际工程有限责任公司 | Interface device used for multi-process flue gas purification, and active carbon transportation system and method |
-
2003
- 2003-11-10 CN CN 200320106830 patent/CN2657757Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798126A (en) * | 2012-08-31 | 2012-11-28 | 张家港长力机械有限公司 | Feed device used in garbage burning reaction furnace |
| CN102965194A (en) * | 2012-11-16 | 2013-03-13 | 湖南林之神生物科技有限公司 | Wooden activated carbon adding device of camellia oleosa seed oil refining process |
| CN102965194B (en) * | 2012-11-16 | 2013-11-27 | 湖南林之神生物科技有限公司 | Wooden activated carbon adding device of camellia oleosa seed oil refining process |
| CN104307355A (en) * | 2014-10-24 | 2015-01-28 | 无锡雪浪环境科技股份有限公司 | Reaction agent feeding device for deacidifying by dry method |
| CN104492224A (en) * | 2014-11-28 | 2015-04-08 | 浙江菲达科技发展有限公司 | Purifying device for flue gas from waste incineration |
| CN104879769A (en) * | 2015-06-08 | 2015-09-02 | 蔡克文 | Pulverized lignite feeder |
| CN104879769B (en) * | 2015-06-08 | 2017-09-12 | 蔡克文 | Brown coal powder feed appliance |
| CN107309264A (en) * | 2017-07-17 | 2017-11-03 | 武汉都市环保工程技术股份有限公司 | A kind of organic polluted soil dystopy thermal desorption repair system and method |
| CN108163563A (en) * | 2017-12-18 | 2018-06-15 | 安徽科技学院 | Adsorb the Weighing type activated carbon intelligence charging process and its charging system of dioxin |
| WO2019144525A1 (en) * | 2018-01-29 | 2019-08-01 | 中冶长天国际工程有限责任公司 | Interface device used for multi-process flue gas purification, and active carbon transportation system and method |
| CN109876598A (en) * | 2019-03-22 | 2019-06-14 | 江苏东本环保工程有限公司 | The technique that active carbon conveys spraying system and its purifying smoke |
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