CN104075303A - Flue gas waste-heat utilization device for thermal oil furnace - Google Patents
Flue gas waste-heat utilization device for thermal oil furnace Download PDFInfo
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- CN104075303A CN104075303A CN201410339337.5A CN201410339337A CN104075303A CN 104075303 A CN104075303 A CN 104075303A CN 201410339337 A CN201410339337 A CN 201410339337A CN 104075303 A CN104075303 A CN 104075303A
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- oil furnace
- flue gas
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Abstract
The invention belongs to the field of boilers, and particularly relates to a flue gas waste-heat utilization device for a thermal oil furnace. The flue gas waste-heat utilization device for the thermal oil furnace is suitable for a fire coal or fuel gas thermal oil furnace of a dimethyl carbonate device. The flue gas waste-heat utilization device for the thermal oil furnace is suitable for dimethyl carbonate production and comprises the thermal oil furnace, a deoxygenizing aquatic water regulating valve, a steam generator, an air pre-heater, a dust remover and a desulfurizing tower/chimney. The thermal oil furnace, the steam generator, the air pre-heater, the dust remover and the desulfurizing tower/chimney are sequentially connected through pipelines. The steam generator is provided with the deoxygenizing aquatic water regulating valve. The flue gas waste-heat utilization device for the thermal oil furnace has the following advantages that the structure is simple, using is convenient, cost is low, high temperature flue gas can be used for conducting heat exchange with low temperature deoxygenizing water while the flue gas temperature of the thermal oil furnace is lowered, and low-pressure steam can be manufactured to be used for the matched dimethyl carbonate device.
Description
Technical field
The invention belongs to field of boilers, particularly, relate to a kind of heat-conducting oil furnace flue gas waste heat utilization device, be applicable to carbonate device fire coal or gas heat conducting oil stove.
Background technology
Carbonate device coal-fired thermal oil furnace exhanst gas outlet temperature, at 200-220 DEG C, still has a large amount of waste heats to utilize, and can cause amount of heat loss and waste if be directly disposed in atmosphere.Original heat conducting oil furnace apparatus drains into atmosphere by directly outer after desulfurization and dedusting high-temperature flue gas, affects greatly.Harm one: flue-gas temperature is high, and the ratio resistance under equal conditions in electric precipitation electric field is large, and efficiency of dust collection is relatively low, can make dust burdening in flue gas increase, and desulfuration efficiency is reduced; Harm two: the equipment in flue can use because of the high impact of flue-gas temperature, as is arranged in the moving tune booster fan of absorption tower import, the equipment such as flue gas analyzer; Harm three: sulfur dioxide is because of the high solubility decline of temperature, and desulfuration efficiency reduces; Harm four: the water evaporation on absorption tower is accelerated, and clean flue gas moisture content increases, easily causes the stifled ash of GGH, can cause gypsum rain without GGH.
From environmental protection and energy-saving and cost-reducing angle, these high-temperature flue gas are reclaimed, carry out heat exchange with deaerated water again, deaerated water becomes low-pressure steam after heat exchange, and pressure can reach 1.0MPa, meets carbonate device rectifying column reboiler heating load, reboiler outlet deaerated water can return again, continue to carry out heat exchange with high-temperature flue gas and produce steam, form a set of closed-system, can effectively improve the defect of original device.
Summary of the invention
The defect existing in order to overcome prior art, the invention provides a kind of simple in structure, with low cost, heat-conducting oil furnace flue gas waste heat utilization device that can effectively reduce carbonate device energy consumption.
For achieving the above object, the technical solution used in the present invention is as follows:
Heat-conducting oil furnace flue gas waste heat utilization device, is applicable to dimethyl carbonate and produces, and comprising: water regulating valve, steam generator, air preheater, deduster, desulfurizing tower/chimney on heat-conducting oil furnace, deaerated water; Heat-conducting oil furnace, steam generator, air preheater, deduster, desulfurizing tower/chimney are connected by pipeline successively, and steam generator is provided with water regulating valve on deaerated water.
Compared with prior art, the present invention has following beneficial effect: simple in structure, easy to use, with low cost, can in reducing heat-conducting oil furnace flue-gas temperature, utilize high-temperature flue gas and the heat exchange of low temperature deaerated water, low-pressure steam processed is for supporting carbonate device; Heat-conducting oil furnace and the through transport of supporting dimethyl carbonate process units, orthocarbonic acid dimethyl ester rectifying column reboiler thermal source, from power houses 1.0MPa low-pressure steam, utilizes institute of the present invention producing steam can replace original steam, cost-saving 3,000,000 yuan of the company that can be every year.
Brief description of the drawings
Fig. 1 is the structural representation of heat-conducting oil furnace flue gas waste heat utilization device;
In figure: 1, heat-conducting oil furnace, 2, water regulating valve on deaerated water, 3, steam generator, 4, air preheater, 5, deduster, 6, desulfurizing tower/chimney.
Detailed description of the invention
As shown in Figure 1, heat-conducting oil furnace flue gas waste heat utilization device, is applicable to dimethyl carbonate and produces, and comprising: water regulating valve 2, steam generator 3, air preheater 4, deduster 5, desulfurizing tower/chimney 6 on heat-conducting oil furnace 1, deaerated water; Heat-conducting oil furnace 1, steam generator 3, air preheater 4, deduster 5, desulfurizing tower/chimney 6 are connected by pipeline successively, steam generator 3 is provided with water regulating valve 2 on deaerated water, deaerated water enters steam generator 3 by water regulating valve on deaerated water 2, deaerated water and high-temperature flue gas heat exchange, produce saturated vapor, the steam generating leads to carbonate device rectifying column 7 by pipeline.
Heat-conducting oil furnace exit gas temperature is more than 200-220 DEG C, before discharged to atmosphere, need first flue-gas temperature to be reduced, in order to make full use of this part heat, after heat-conducting oil furnace exhanst gas outlet, increase a residual heat using device, by high-temperature steam and deaerated water heat exchange, in reducing flue-gas temperature, water is made to saturated vapor, meet explained hereafter needs.
Described heat-conducting oil furnace 1 is chain coal burning boiler, taking coal, heavy oil, light oil or flammable liquid as fuel, conduction oil is heat carrier, utilizes oil circulating pump to force liquid phase circulation, heat energy is flowed to after hot equipment, then return to the extraordinary industrial furnace of the single flow reheating.
Described steam generator 3 is horizontal steam generator or vertical steam generator, the high-temperature flue gas port of export of described coal-fired thermal oil furnace is connected with the high-temperature flue gas entry of steam generator 3 through flue, steam generator 3 exhanst gas outlets are connected with air preheater 4, deduster 5, desulfurizing tower and chimney 6 successively by flue, then discharged to atmosphere.
On described deaerated water, water regulating valve 2 is wind open form single-seat adjusting valve, and on deaerated water, water regulating valve 2 regulates aperture automatically according to steam generator liquid level, maintains steam generator 3 stable levels.
The effect of air preheater 4 is mainly the smoke discharging residual heat that reclaims coal-fired organic carrier heating furnace, improves wind pushing temperature, impels fuel overheavy firing, reduces the phosphorus content of slag and smoke evacuation, improves efficiency of combustion and keeps the stability of fuel combustion.
The function of deduster is mainly that the flue dust producing in combustion process is flutterred and caught, and prevents that flue dust from entering atmosphere and causing the pollution to environment, to improve the cleanliness factor of air.
The effect of desulfurizing tower be mainly acid flue gas by with suitable alkali substance reaction, thereby remove the SO in flue gas
2, SO
2with reacting or generation (wet flue gas desulfur technology) in aqueous slkali between alkaline matter, or there is (dry method or semidry method stack gas desulfurization technique) at the wetted surface of solid alkaline material.SO in alkaline matter and flue gas used
2react, the mixture that has produced a kind of sulphite and sulfate is (different according to alkaline matter used, salt may be calcium salt, sodium salt, magnesium salts or ammonium salt), the most frequently used alkaline matter of flue gas desulfurization is lime stone (calcium carbonate), quick lime (calcium oxide) and white lime (calcium hydroxide).
Between heat-conducting oil furnace and air preheater, increase steam generator device; make full use of heat-conducting oil furnace outlet high-temperature flue gas; make the heat exchange in steam generator of itself and deaerated water; can produce for carbonate device by output 1.0MPa low-pressure saturated steam; reduce carbonate device energy consumption; thereby improve company's product price advantage, can effectively reduce discharged gas fume temperature, protected environment simultaneously.
The flue-gas temperature of horizontal coal-fired heat-conducting oil furnace is 200 DEG C, by with deaerated water heat exchange, per hourly produce 1.5 tons of 1.0MPa saturated vapors, can move 2 boilers simultaneously, institute's producing steam all for the production of.In the situation that not affecting the normal operation of boiler, the present invention can reduce exhaust gas temperature, and the waste heat in recovered flue gas, for the production of low-pressure saturated steam, is saved energy consumption.
The present invention is applicable to the higher combustion furnace of other boiler of organic heat carrier outlet flue gases simultaneously.
Claims (6)
1. a heat-conducting oil furnace flue gas waste heat utilization device, is applicable to dimethyl carbonate and produces, and comprising: water regulating valve, steam generator, air preheater, deduster, desulfurizing tower/chimney on heat-conducting oil furnace, deaerated water; It is characterized in that: heat-conducting oil furnace, steam generator, air preheater, deduster, desulfurizing tower/chimney are connected by pipeline successively, steam generator is provided with water regulating valve on deaerated water.
2. heat-conducting oil furnace flue gas waste heat utilization device according to claim 1, is characterized in that, described heat-conducting oil furnace is chain coal burning boiler.
3. heat-conducting oil furnace flue gas waste heat utilization device according to claim 1, it is characterized in that, taking coal, heavy oil, light oil or flammable liquid as fuel, conduction oil is heat carrier, utilize oil circulating pump to force liquid phase circulation, heat energy is flowed to after hot equipment, then return to the extraordinary industrial furnace of the single flow reheating.
4. according to the heat-conducting oil furnace flue gas waste heat utilization device described in claim 2 or 3, it is characterized in that, described steam generator is horizontal steam generator or vertical steam generator.
5. heat-conducting oil furnace flue gas waste heat utilization device according to claim 4, is characterized in that, on described deaerated water, water regulating valve is wind open form single-seat adjusting valve.
6. heat-conducting oil furnace flue gas waste heat utilization device according to claim 5, is characterized in that, the steam generating leads to carbonate device rectifying column by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410339337.5A CN104075303A (en) | 2014-07-16 | 2014-07-16 | Flue gas waste-heat utilization device for thermal oil furnace |
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| CN201410339337.5A CN104075303A (en) | 2014-07-16 | 2014-07-16 | Flue gas waste-heat utilization device for thermal oil furnace |
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| CN201410339337.5A Pending CN104075303A (en) | 2014-07-16 | 2014-07-16 | Flue gas waste-heat utilization device for thermal oil furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382753A (en) * | 2016-10-13 | 2017-02-08 | 东莞共能机械科技有限公司 | Combustion control system of combustion engine and heat conduction oil heater |
| WO2017152323A1 (en) * | 2016-03-06 | 2017-09-14 | 张舒维 | Novel industrial boiler with electronic descaling technology |
| CN108168102A (en) * | 2017-12-04 | 2018-06-15 | 新奥泛能网络科技股份有限公司 | High-temperature heating equipment |
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Application publication date: 20141001 |