CN87214901U - Dual-inserter cyclone dust collector and heat exchanger - Google Patents
Dual-inserter cyclone dust collector and heat exchanger Download PDFInfo
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- CN87214901U CN87214901U CN 87214901 CN87214901U CN87214901U CN 87214901 U CN87214901 U CN 87214901U CN 87214901 CN87214901 CN 87214901 CN 87214901 U CN87214901 U CN 87214901U CN 87214901 U CN87214901 U CN 87214901U
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Abstract
The utility model relates to a dual-inserter cyclone dust removing heat exchanger, which integrates dust removal with heat exchange. The utility model is used for the purification and the heat recovery of high-temperature dusty gases, and can save energy and simplify a purification system. The utility model comprises a heat exchange section (1), a main precipitation treatment zone (2) and a water sealing ash bucket (3). A dust remover is formed by that the bottom of a barrel enclosed by steel pipes is connected with a steel plate barrel with slits; the top part of the dust remover is provided with spiral inserts (10) and (12) which enable the high-temperature dusty gases to become a spiral stream of gas; the spiral stream of gas is purified in the process of flowing from top to bottom and then exhausted from the exhaust pipe on the bottom of the dust remover. The medium used for recovering heat flows through the steel pipes which form the barrel and have inserts, and exchanges heat with the high-temperature dusty gases, so the goal of heat recovery is realized.
Description
The present invention relates to dedusting and heat transfer technology, be one high temperature dust gas purified new equipment with waste heat recovery simultaneously.
At industrial departments such as metallurgy, chemical industry, building materials, oil, there are many production processes will produce high temperature dust gas, as the flue gas of coal-fired furnace kiln, the coal gas that various gas generators are produced etc.The physics heat of these gases is appreciable residual heat resources, and recycling this waste heat has the double action that reduces thermal pollution and reduce energy resource consumption, is an importance of industrial energy saving.The exhaust dust-laden is the primary pollution source that causes atmosphere pollution, and protection environment, improvement are polluted, and must collect the dust that emission gases is carried.The product that some production process, dust still must reclaim.Therefore, the dedusting of high temperature dust gas and waste heat recovery have been the indispensable part of modern production system, and dedusting and heat recovery technology direct relation construction investment and production technology level.Current, the industrial development of China presses for reduced investment, dedusting and heat recovery technology that efficient is high, is used for the technological transformation and the construction of vast town and country enterprise.
Dedusting and heat recovery technology respectively have more than the 100 year history of factory, and abundant development is all arranged, but see with regard to the level that reaches at present, still can not well satisfy the demand.Existing cyclone dust collectors belong to dry dust removal, the grey device of double-deck lock is adopted in the ash bucket bottom, there are a large amount of dusts to fly upward during ash discharge, dust removal process adopts counter-rotating air-flow method for exhausting, impels to produce many kinds of secondary eddy current in the swirling eddy, is carrying dust and is converging the outflow blast pipe with the discharge air-flow, reduced separating effect, especially not high to the grain dust efficient that reclaims below 5～10 μ m, do not reach the GB requirement, can only use as the elementary cleaner of multistage purification system.Though sack cleaner and electric cleaner efficient height involve great expense, and can not handle high-temperature gas.The heat exchanger kind is also more, but the not high and fearness dust blockage problem of heat exchange efficiency is all arranged.For high temperature dust gas, current processing method of having to adopt cooling, thick dedusting and smart dedusting, the complication system of Gou Chenging thus, its expense makes medium-sized and small enterprises be difficult to bear, and large enterprises also are forbidding.
For solving the problem that above-mentioned dedusting and heat recovery technology exist, new departure that dedusting and heat transfer process is concentrated on one of special proposition, be characterized in that to adopt new dedusting and heat exchange principle be the new equipment that basis formation one has high-effective dust-removing and waste heat recovery double action concurrently, this new equipment is two plug-in unit rotational flow dust-removing heat exchangers.
One, the principle of two plug-in unit rotational flow dust-removing heat exchangers
Two plug-in unit rotational flow dust-removing heat exchangers are a cylindrical device in principle, are divided into two sections by the effect of process, and epimere is the heat-exchange dedusting section, and hypomere is main dedusting section, and the bottom is dust exhaust (a water seal ash bucket).Like this, in the heat-exchange dedusting section, except that finishing heat recovery, also have the dedusting effect simultaneously concurrently, and create favourable dedusting condition for main dedusting section.Main dedusting section guarantees finally to reach high efficiency of dust collection by new principle dedusting.Therefore, two plug-in unit rotational flow dust-removing heat exchangers be not existing deduster and heat exchanger simple combination, dedusting and heat transfer process are unified in certain time space to constitute a kind of new equipment thus but make from principle.Say with regard to principle, can narrate respectively.
1, dust-cleaning principle
Two plug-in unit rotational flow dust-removing heat exchangers adopt the dedusting of eddy flow principle, and the practice that improves efficiency of dust collection is:
1., in the heat-exchange dedusting section, surround cylindrical wall side by side with steel pipe, high temperature dust gas is entered in the tube when barrel rotates, in the chase that constitutes by adjacent steel pipe, collide with tube wall, produce little eddy current (see figure 1), wherein contained dust is hindered by tube wall, lose kinetic energy gradually and fall to the water seal ash bucket along chase, no longer enter main rotational gas flow, play the dedusting effect thus.The medium and small eddy current of chase improves the effect of turbulence level and attenuated layer laminar boundary layer simultaneously in addition, and making conducts heat is strengthened, and this is the key character that this equipment is used for increasing high temperature dust gas side heat transfer coefficient.Dedusting and strengthening heat transfer between steel pipe, have been realized in the chase simultaneously.By the cylindrical wall that steel pipe surrounds, its wall increases by 50～70% than light barrel, also is a key factor that increases heat output.
2., main dedusting section surrounds the air-flow rotary barrel with double layer sleeve barrel, has several vertical slits on inner tube wall, in face of slit baffle plate is housed in the double layer sleeve barrel annular space.The heat-exchange dedusting section makes air-flow flow into main dedusting section with very big rotary speed by the effect of tube internal helical blades plug-in unit.Swirling eddy by under when flowing downward, constantly pour slit along the dust stream of inner tube wall rotation and collide with baffle plate, grit falls into the water seal ash bucket thereupon losing kinetic energy, isolate the grain dust that does not trap in chase thus.Compare with general cyclone dust collectors, the grit that enters slit no longer is fed back in the swirling eddy, thereby can improve efficiency of dust collection.
3., two plug-in unit rotational flow dust-removing heat exchangers are taked the direct current exhaust, blast pipe passes water seal ash bucket exhaust pipe mouth and exposes one section height of the ash bucket water surface, the air-flow that is rotated down has the remaining grit of part to pour in the water separated when skimming over the water surface, whole air-flow then on the counter steer, flows into blast pipe immediately.For preventing near the following rotational gas flow exhaust pipe mouth water surface of not flowing through, and guiding goes up rotational gas flow and enters blast pipe smoothly, and the inverted conical shape kuppe is housed above exhaust pipe mouth.Like this, swirling eddy is not taken out by exhaust pipe mouth and is draged in whole flow process from top to bottom, has avoided resembling producing secondary eddy current carry over the cyclone dust collectors, more can keep high efficiency of dust collection.
4., two plug-in unit rotational flow dust-removing heat exchanger is with the ash discharge of water seal ash bucket, the grit of separating sedimentation in ash bucket water concentrates, and is discharged by the curved bar pump of ash bucket bottom at last, has avoided producing the secondary fly-up of dust.
2, heat exchange principle
Heat exchanger is the visual plant of waste heat recovery, for improving waste heat recovery efficient, heat exchanger has many new development aspect augmentation of heat transfer, wherein produce the method that eddy flow improves coefficient of heat convection in the pipe with plug-in unit, and advantages such as simple in structure, that effect is remarkable and drag losses is little are arranged.For this reason, the heat-exchange dedusting section of two plug-in unit rotational flow dust-removing heat exchangers all adopts the eddy flow plug-in unit at high temperature dust gas and heat transferring medium (air, coal gas, steam and water etc.) two sides, is used for augmentation of heat transfer, the eddy flow of high temperature dust gas side has also guaranteed the unification of dedusting and diabatic process.
At the high temperature dust gas side, plug-in unit be by thicker central tube welding multi-layer helical blade constitute air-flow from top axle after flowing into cylindrical shell, when this air-flow of spiral air flow that changes into rectangular cross section under this plug-in unit effect flows downward, carry out exchange heat with heat transferring medium in the barrel steel pipe.For satisfying the dedusting requirement simultaneously, spiral air flow is with higher speed transversal flow barrel steel pipe, air-flow inside also exists vortex pair or four vortex secondaries stream, these with preceding described steel pipe between in the chase effect of little eddy current match, constituted the high temperature dust gas side and strengthened to the new technical characterictic of heat.The multi-layer helical vane insert can guarantee that swirling eddy becomes owner of the dedusting section with high rotary speed.
Heat transferring medium flows in the steel pipe that surrounds heat-exchange dedusting section barrel, and the steel pipe cross dimensions is φ 70 * 3mm, and length heat exchange on demand is highly definite.Every steel pipe all is equipped with the little plug-in unit that produces eddy flow, and the enhanced heat exchange side medium gives heat thus.Heat transferring medium upwards flows, and constitutes countercurrent heat exchange with high temperature dust gas, otherwise is the following current heat exchange.
For disposing big heat exchange area, the central tube of high temperature dust gas side plug-in unit also can surround with the steel pipe that plug-in unit is housed equally, and heat transferring medium is passed through therein.Though some complexity of structure can reduce overall dimensions like this.
Two, the structure of two plug-in unit rotational flow dust-removing heat exchangers
Narrate the structure of two plug-in unit rotational flow dust-removing heat exchangers in conjunction with the accompanying drawings.
Fig. 1: steel pipe chase eddy current schematic diagram
Fig. 2: two plug-in unit rotational flow dust-removing heat exchanger monotubular structure charts.
Fig. 3: inside and outside cylinder annular chamber baffle plate schematic diagram
The drawing explanation:
(1) heat-exchange dedusting section, (2) main dedusting section, (3) water seal ash bucket, (4) high temperature dust gas access, (5) high temperature dust gas vent.During countercurrent heat exchange, (6) and (23) heat transferring medium inlet, the outlet of (7) heat transferring medium.During the following current heat exchange, (9) heat transferring medium inlet, the outlet of (8) and (24) heat transferring medium.(10) high temperature dust gas side plug-in unit, (11) heat exchange steel pipe, (12) heat exchange steel pipe plug-in unit, (13) heat-exchange dedusting section sleeve pipe, (14) insulation filler, (15) main dedusting section inner core, (16) main dedusting section urceolus, (17) dedusting slit, (18) kuppe, (19) curved bar pump (20) semicircle slotted hole, (21) central tube, (22) central tube sphere end socket, (25) ring cavity baffle plate.
Two plug-in unit rotational flow dust-removing heat exchangers all adopt carbon steel plate and steel pipe welding to make, and steel pipe is selected φ 70 * 3mm for use, and steel plate thickness designs routinely and selects for use.Steel pipe (11) when being arranged in cylindrical shape, each pipe are close to mutually, and two sides vertical continuous welding in contact position keeps cylindrical shell air-tightness and dimensionally stable, and steel tube surface will spray heat-resistant antifriction coating sometimes, to improve service life.Steel pipe (11) in the flow circle under entry and exit (8), (6) by lateral surface open semicircle slotted hole, flow into or outflow for heat transferring medium, the termination is then sealed, and stretch out in the ring cavity between the inside and outside tube of main dedusting section (15) and (16), guarantee that grit falls into the water seal ash bucket in the steel pipe chase.In other positions, heat transferring medium flows out by the steel pipe port or flows into.The inner core (15) of main dedusting section (2) is generally opened 4 vertical slit (see figure 3)s, and slit width a gets 20～30mm, pours direction in face of the slit air-flow in ring cavity, welds 4 baffle plates (25).
In two plug-in unit rotational flow dust-removing heat exchangers shown in Figure 2, high temperature dust gas changes into axially and forms spiral air flow immediately after inlet (4) is located radial inflow.Spiral air flow is by after heat-exchange dedusting section and the main dedusting section, at kuppe (18) effect inflow blast pipe down, and locates to flow to outside the device exporting (5).Heat transferring medium directly enters the mouth and flows in the device, evenly behind each heat exchange steel pipe of flow path, is flowed out outside the device by outlet.In flow process like this, high temperature dust gas is cooled and purifies, and heat transferring medium then is heated, and has realized the purpose of a device multipotency.
In utilizing the high temperature dust gas generation, during low-pressure steam, heat transferring medium is imported and exported should constitute the circulatory system with drum.
The interior filled with water of water seal ash bucket (3), rafter inserts and wherein constitutes water seal under the main dedusting section inner/outer tube, realizes the sealing of high temperature dust gas side.For keeping sealing load, need control ash bucket water surface elevation automatically.In the water seal ash bucket, the sedimentation in dust flue gradually of water-immersed dust is discharged through the curved bar pump, flows into heavy pond, hall, or directly to the distant place pumping.
Each segment structure size, method for designing is calculated and is determined routinely.
When high temperature dust gas treatment amount is bigger, and should not enlarge the monotubular physical dimension again the time, can select a plurality of monotubular parallel connections for use, constitute many barrel structures form.When adopting many barrel structures, each shared water seal ash bucket is adorned a screw machine under this ash bucket, push the dust of each deposition to an end and vertically fall in the curved bar pump, gives and discharging and pumping.Like this, water seal ash bucket height will can not have big increase because of many parallel connections, and the height that can take up space less can be cancelled the restriction to many quantity again.
Three, the advantage of two inserter cyclone dust collector heat exchangers
According to the above, and with existing cyclone dust collectors and heat exchanger contrast, to two inserter cyclone dust collector heat exchangers following advantage can be proposed:
1), can directly reclaim the waste heat of dusty gas and heat exchange efficiency height.
2), the efficiency of dust collection height, one section use can reach the sanitary standard requirement, thereby can replace the multistage dust separation system.
3), simple in structure, handling ease, manufacturing expense is low.
4), simple to operate, safeguard that producing cost is low easily.
5), to gas and dust characteristic strong adaptability, big to temperature and changes in flow rate ability to bear.
6), dust discharge and carrying method be simple, do not produce reentrainment of dust and pollute.
7), to recycle waste heat extensive, can be various purpose heated air or liquid.
8), drag losses is little, power consumption is low.
Claims (2)
1, gas is purified and two plug-in unit rotational flow dust-removing heat exchangers of waste heat recovery, be to form body from top to bottom by heat-exchange dedusting section (1), main dedusting section (2) and water seal ash bucket (3), it is characterized in that: the heat-exchange dedusting section is to surround cylindrical shell side by side with steel pipe (11), and steel pipe and cylindrical shell are equipped with spiral insert (10) and (12).The steel pipe lower end employing mouth of pipe that surrounds cylindrical shell seals and inserts in main dedusting section ring cavity, simultaneously to being in the pipeline section in inlet (6) or outlet (8) the flow circle scope, at its outside open semicircle slotted hole (20).Main dedusting section is made up of inner core (15), urceolus (16), dedusting slit (17), kuppe (18).The water seal ash bucket has the Purge gas discharge pipe therefrom to pass through.
2, dust-removing heat exchanger according to claim 1, it is characterized in that: when the central tube of cylindrical shell plug-in unit (10) is when surrounding body (21) with steel pipe, this body (21) bottom is sealed with spherical plate (22), top end opening is connected with outer pipeline, and body (21) is the inflow pipe or the effuser of a part of heat transferring medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87214901 CN87214901U (en) | 1987-10-29 | 1987-10-29 | Dual-inserter cyclone dust collector and heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87214901 CN87214901U (en) | 1987-10-29 | 1987-10-29 | Dual-inserter cyclone dust collector and heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87214901U true CN87214901U (en) | 1988-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87214901 Withdrawn CN87214901U (en) | 1987-10-29 | 1987-10-29 | Dual-inserter cyclone dust collector and heat exchanger |
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| CN (1) | CN87214901U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598509B (en) * | 2003-08-20 | 2011-02-09 | 路慕斯技术有限公司 | Heat exchanger |
| CN103486868A (en) * | 2013-09-18 | 2014-01-01 | 中国科学院广州能源研究所 | Efficient dust removing waste heat recycling and energy saving device |
| CN104235865A (en) * | 2014-08-27 | 2014-12-24 | 广州优的新能源科技有限公司 | Automatic dust removal all-in-one machine of biomass boiler |
| CN105508054A (en) * | 2014-09-23 | 2016-04-20 | 中航商用航空发动机有限责任公司 | Engine gas inlet pipe anti-icing system and aircraft engine |
| CN108479270A (en) * | 2018-05-30 | 2018-09-04 | 烟台龙源电力技术股份有限公司 | A kind of flue gas condensing clarifier and condensation purification system |
| CN114804258A (en) * | 2022-02-21 | 2022-07-29 | 沈阳博宇科技有限责任公司 | Method for evaporating desulfurization wastewater outside flue |
-
1987
- 1987-10-29 CN CN 87214901 patent/CN87214901U/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101598509B (en) * | 2003-08-20 | 2011-02-09 | 路慕斯技术有限公司 | Heat exchanger |
| CN103486868A (en) * | 2013-09-18 | 2014-01-01 | 中国科学院广州能源研究所 | Efficient dust removing waste heat recycling and energy saving device |
| CN103486868B (en) * | 2013-09-18 | 2016-01-20 | 中国科学院广州能源研究所 | Efficient de-dirt Waste Heat Recovery energy saver |
| CN104235865A (en) * | 2014-08-27 | 2014-12-24 | 广州优的新能源科技有限公司 | Automatic dust removal all-in-one machine of biomass boiler |
| CN105508054A (en) * | 2014-09-23 | 2016-04-20 | 中航商用航空发动机有限责任公司 | Engine gas inlet pipe anti-icing system and aircraft engine |
| CN105508054B (en) * | 2014-09-23 | 2018-12-07 | 中国航发商用航空发动机有限责任公司 | A kind of engine inlets anti-icing system and aero-engine |
| CN108479270A (en) * | 2018-05-30 | 2018-09-04 | 烟台龙源电力技术股份有限公司 | A kind of flue gas condensing clarifier and condensation purification system |
| CN114804258A (en) * | 2022-02-21 | 2022-07-29 | 沈阳博宇科技有限责任公司 | Method for evaporating desulfurization wastewater outside flue |
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| CF01 | Termination of patent right due to non-payment of annual fee |