CN1467406A - Dew-resist low-resistance impulse dust remover - Google Patents
Dew-resist low-resistance impulse dust remover Download PDFInfo
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- CN1467406A CN1467406A CNA021379076A CN02137907A CN1467406A CN 1467406 A CN1467406 A CN 1467406A CN A021379076 A CNA021379076 A CN A021379076A CN 02137907 A CN02137907 A CN 02137907A CN 1467406 A CN1467406 A CN 1467406A
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- bag
- deduster
- heater
- gas
- magnetic valve
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Abstract
A condensation-resistant low-resistance pulse dust collector composed of a heating apparatus, working air pocket, solenoid valve and ash separator (bag) which is made of various types of fabrics. The present invention provides a process, after heating the compressed air to near the flue-gas temperature, and spraying to the dusting machine (bag) through the pulse solenoid valve. The invention eliminates the condition for condensation of moisture thus improving the dust collection efficiency substantially.
Description
Resistive connection reveals low-resistance impulse dust remover, belongs to industrial dedusting equipment, relates to fields such as HVAC, dedusting, environmental protection.
It is one of bottleneck of restriction economic development that industrial waste gas pollutes.Industries such as metallurgy, casting, machinery produce the waste gas that contains dust and harmful substance in a large number in producing iron and steel or non-ferrous metal process, ecological environment is being produced serious harm.Promoted the pocket type pulsed dust collector technology since last century both at home and abroad, promptly used special cloth bag that flue gas is filtered, adopted compressed air spraying then, the dust that bag wall is accumulated falls.
Though this technology has certain effect, the aqueous vapor in compressed air and the flue gas causes gas-flow resistance to increase because of temperature difference reason dewfall on the bag wall causes the dust obstruction gas passage that hardens, and power consumption rises, and efficiency of dust collection descends significantly.
The objective of the invention is the temperature difference by Adjustment System combination and reduction compressed air and flue gas, eliminate aqueous vapor dewfall condition, reduce technological means such as gas-flow resistance, solve the problems referred to above that traditional pulse bag type dust collector exists, to promote the progress of environmental protection dedusting technology, bring benefit to the mankind.
Technical solution of the present invention is as follows:
Form fundamental system of the present invention by heater, work gas bag, magnetic valve, deduster (bag); By heater compressed air is heated, makes it 〉=25 ℃, with reduce and flue gas between the temperature difference, fundamentally eliminate aqueous vapor and go up the dewfall condition at deduster (bag), avoid dust to harden, reduce gas-flow resistance; In deduster (bag), spurt with certain pulse train through work gas bag and magnetic valve then, remove and be detained dust; Realize purpose of the present invention by above technical scheme.
Describe the effect and the characteristics of particular content of the present invention and each several part in detail below by accompanying drawing one, accompanying drawing two, accompanying drawing three, accompanying drawing four.
Accompanying drawing one is a basic block diagram of the present invention; Heater (1), work gas bag (2), magnetic valve (3), deduster (bag) (4) constitute fundamental system of the present invention, and wherein deduster (bag) (4) is made of each fiber material, and deduster (bag) can be Any shape.
Wherein heater (1) is electric heater or steam heater, be made up of heating (5) or gas gas thermal element (21) and temperature controller (6), temperature controller (6) is made up of PLC Programmable Logic Controller (14) or PID temperature controller or bimetal leaf or mercoid switch or industrial computer (15) or SCM system (16).The air valve of disconnection of the power switch of heating or steam heater is closed when compressed air temperature is higher than design temperature, otherwise power switch closes or the air valve unblank.
Heater (1) also can be made of PTC element (7) separately, utilizes the automatic constant-temperature characteristic of PTC element to keep compressed air in the temperature levels of setting.
The effect of heater (1) is clearly: be used for heated compressed air, reduce itself and the flue gas temperature difference to eliminate aqueous vapor dewfall condition, avoid dust to harden, reduce gas-flow resistance.
Work gas bag (2) is made of airtight canister (31), and is standby in order to store heated air, is communicated with by pipeline (28) between work gas bag (2) and magnetic valve (3).
Magnetic valve (3) is used for carrying compressed air to spurt to deduster (bag) (4), and magnetic valve (3) opens and closes by certain cycle and pulsewidth; A plurality of magnetic valves are formed array, by the switching sequence and the pulsewidth of PLC Programmable Logic Controller (14) or industrial computer (15) or SCM system (16) control array.
Deduster (bag) (4) is made of each fiber material, or is made of their composition; Deduster (bag) (4) can be different shape, can be a bag shape, plate shaped, honeycombed etc.
The effect of deduster (bag) (4) is the dust of filtering flue gas.
Shown in accompanying drawing one, compressed air is finished whole working procedure of the present invention via heater (1) → work gas bag (2) → magnetic valve (3) → deduster (bag) (4).
Characteristics of the present invention are: by the combination of heater (1), work gas bag (2), magnetic valve (3), deduster (bag) (4), compressed air is adjusted on the temperature of setting to reduce the temperature difference with flue gas, fundamentally eliminated the condition of aqueous vapor in the last dewfall of deduster (bag), thereby avoided dust to harden, the assurance flue is unimpeded, reduce gas-flow resistance, gas permeability, filterability, the dust spalling of deduster (bag) are improved significantly, the whole system efficiency of dust collection rises, power consumption descends, and realizes the goal of the invention of expection.
Below in conjunction with two pairs of embodiment one explanations of accompanying drawing.
Embodiment one: heater in embodiment one (1) adopts heating (5), and temperature controller (6) adopts Programmable Logic Controller (14).The break-make of power switch (19) being controlled in the sampling of temperature in the heater according to temperature sensor (17) is controlled at about 40 ℃ temperature.Adopt PLC Controlled by Programmable Controller magnetic valve array to open and close among the embodiment one by certain sequence and pulsewidth.Form deduster (bag) (4) array at embodiment one by sack cleaner, deduster (bag) (4) is made of each fibrid.
Air compressor (8), gas storage bag (9), water knockout drum (10), separator (11), pressure-reducing valve (12) have been set up in the front of heater 1, purpose is to allow surrounding air increase air pressure through air compressor, pass through water knockout drum (10) again and remove part moisture, remove oil content through separator (11), adjust to suitable operating air pressure through pressure-reducing valve (12).
Illustrate below in conjunction with three couples of embodiment of accompanying drawing two:
Embodiment two: increased freeze-dryer (13) in embodiment two, its effect is by the moisture in the freezing dewfall removal compressed air before heating.
Heater among the embodiment two (1) adopts steam pipe (21) as heating element heater, and temperature controller is SCM system (16), realizes the gas heated at constant temperature by the break-make of cap relief valve (22) is controlled.
By industrial computer (15) the magnetic valve array is controlled among the embodiment two.Control model can be the step-by-step movement programme-control of open loop: promptly in accordance with regulations chronological order of each magnetic valve in the magnetic valve array, the pulsewidth of regulation open and close one by one; Also closed-loop control: sequential and pulsewidth that the draught head of importing and exporting in dedusting storehouse (27) according to flue gas is regulated the magnetic valve array at random, with the moment flow and average discharge of control air-flow.
Following embodiment three in conjunction with the accompanying drawings four with five pairs of embodiment three explanations of accompanying drawing.
Heater among the embodiment three (1) has adopted the PTC element, utilizes the heating of PTC element automatic constant-temperature Characteristics Control gas.The PTC element is simple and reliable, be convenient to maintenance and with low cost.
The deduster of embodiment three (bag) (4) adopts plate shape deduster, and position and the direction of plate shape deduster in dedusting storehouse (27) set according to technology.
Embodiment three is by industrial computer (15) control magnetic valve array.By smoke inlet (24) and exhanst gas outlet (25) being located the sampling processing of flue gas air pressure, differential pressure conditioner (36) sends pressure difference to industrial computer (15), industrial computer (15) is then regulated sequential and the pulsewidth that magnetic valve opens and closes at random by the pressure difference of process stipulation, shown in accompanying drawing five.Smoke density and flow velocity in the dedusting storehouse are tended towards stability, and dynamically dust removing effects and system power dissipation obtain optimum value.Industrial computer (15) temperature in the heater (1) of also can sampling is handled the on/off of heating by control line (33).
Accompanying drawing one to accompanying drawing five to mark the sequence number meaning as follows:
(1) heater, (2) work gas bag, (3) magnetic valve, (4) deduster (bag), (5) heating, (6) temperature controller, (7) PTC element, (8) air compressor, (9) gas storage bag, (10) water knockout drum, (11) separator, (12) pressure-reducing valve, (13) freeze-dryer, (14) Programmable Logic Controller, (15) industrial computer, (16) SCM system, (17) temperature sensor, (18) mains supply, (19) power switch, (20) deduster (bag) fixed mount, (21) steam pipe, (22) cap relief valve, (23) nozzle, (24) smoke inlet, (25) exhanst gas outlet, (26) air intake, (27) dedusting storehouse, (28) pipeline, (29) plate shape deduster, (30) magnetic valve array control signal sequential, (31) dedusting storehouse flue gas pressure reduction performance graph, (32) data conveyer line, (33) control line, (34) steam source of the gas, (35) baroceptor, (36) differential pressure conditioner, (37) valve that anhydrates.
Description of drawings:
Accompanying drawing one is a basic block diagram of the present invention.
Accompanying drawing two is schematic diagrams of embodiment one.
Accompanying drawing three is schematic diagrams of embodiment two.
Accompanying drawing four is schematic diagrams of embodiment three
Accompanying drawing five is magnetic valve array control signal waveform exemplary graphs
Claims (3)
1. resistive connection reveals low-resistance impulse dust remover, it is characterized in that: be made up of heater (1), work gas bag (2), magnetic valve (3), deduster (bag) (4);
It is characterized in that: deduster (bag) (4) is made of each fibrid, and deduster (bag) can be Any shape;
It is characterized in that: heater (1) is made up of heating (5) and temperature controller (6) or is made up of gas thermal element (21) and temperature controller (6), or is made of PTC element (7);
It is characterized in that: heater (1) adds hot-air makes that to enter work gas bag (2) behind temperature 〉=25 ℃ standby, spurts to deduster (bag) (4) through magnetic valve (3) again.
2. resistive connection as claimed in claim 1 reveals low-resistance impulse dust remover, it is characterized in that: set up air compressor (8) or gas storage bag (9) or water knockout drum (10) or separator (11) or pressure-reducing valve (12) or freeze-dryer (13) or their unordered combination in that heater (1) is preceding.
3. resistive connection as claimed in claim 1 reveals low-resistance impulse dust remover, it is characterized in that; The keying of magnetic valve (3) is by Programmable Logic Controller (14) or industrial computer (15) or SCM system (16) control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021379076A CN1467406A (en) | 2002-07-08 | 2002-07-08 | Dew-resist low-resistance impulse dust remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021379076A CN1467406A (en) | 2002-07-08 | 2002-07-08 | Dew-resist low-resistance impulse dust remover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1467406A true CN1467406A (en) | 2004-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021379076A Pending CN1467406A (en) | 2002-07-08 | 2002-07-08 | Dew-resist low-resistance impulse dust remover |
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| Country | Link |
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| CN (1) | CN1467406A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580416A (en) * | 2012-03-20 | 2012-07-18 | 南京大吉铁塔制造有限公司 | Method for preventing filter bag of bag type collector from blockage |
-
2002
- 2002-07-08 CN CNA021379076A patent/CN1467406A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580416A (en) * | 2012-03-20 | 2012-07-18 | 南京大吉铁塔制造有限公司 | Method for preventing filter bag of bag type collector from blockage |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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