CN205199300U - Microwave heating flue gas desulphurization device - Google Patents

Microwave heating flue gas desulphurization device Download PDF

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Publication number
CN205199300U
CN205199300U CN201520922093.3U CN201520922093U CN205199300U CN 205199300 U CN205199300 U CN 205199300U CN 201520922093 U CN201520922093 U CN 201520922093U CN 205199300 U CN205199300 U CN 205199300U
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flue gas
valve
microwave
monitor point
concentration
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CN201520922093.3U
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马晓茜
姚忠良
方诗雯
林有胜
胡善超
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South China University of Technology SCUT
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South China University of Technology SCUT
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Abstract

The utility model discloses a microwave heating flue gas desulphurization device the device's main part includes constitutions such as forced draught blower, flowmeter, heat exchanger, microwave tube -like stove, temperature sensor, data collection station, dispenser. The flue gas that contains sulphur passes through the forced draught blower and passes through heat exchanger entering pipeline with certain velocity of flow, and reentrant microwave tube -like stove has the magnetron in the microwave tube -like stove, and the heating flue gas intensifies rapidly. Through the temperature sensor determine after, carry out the desulfurization at suitable temperature range's the reentrant desulfurization cavity of flue gas, finally accord with and discharge the flue gas that requires in the heat exchanger atmospheric dilution. This set device installation cost is low, need not carry out the big change circumstances to all kinds of enterprises under, install this set device, have fabulous desulfurization effect.

Description

A kind of heating using microwave flue gas desulfur device
Technical field
The utility model relates to flue gas desulfurization technique field, particularly relates to a kind of heating using microwave flue gas desulfur device.
Background technology
China's present stage papermaking enterprise, smelter and high energy-consuming enterprises can produce sulfur-containing smoke gas, if without process, element sulphur can with SO xform drain in air, can form acid rain, will be a kind of huge harm for society.The annual acid rain of China and sulfur dioxide pollution cause economic loss 1,100 hundred million.According to the World Health Organization and United Nations Environment Programme's statistics, annual that manufactured by the mankind, sulfurous fuels burning and exhausting calculates to the sulfur dioxide in air with hundred million tons at present, and heavy damage atmospheric environment, governs the development of World Economics.Wherein, the sulfur dioxide that power plant soot discharges every year in air just up to 1,200 ten thousand tons, becomes the arch-criminal causing environmental pollution.Therefore, SO is reduced xdischarge capacity, control air SO xpollute extremely urgent.And along with the enforcement of national energy-saving Mitigation options, the atmosphere pollutants emission standards that strict implement is newly revised, firmly limits the production to the enterprise that exceeds standard and even stops production.Accelerate to eliminate consume energy serious and heavy-polluted backward manufacturing enterprise, innovation of depending on science and technology reduces the harm of the mankind for the earth.
SO xsO is mainly contained in gas 2and SO 3, be all in acid gas, SO 2mainly the atmosphere pollution that produces of coal combustion, soluble in water, can be oxidized to SO under certain condition 3, being dissolved in rainwater, is exactly acid rain.The method of current flue gas desulfurization mainly throws alkaline desulfurizing agent and SO xreaction, generates solid residue and discharges desulfurization cavity.
Summary of the invention
The purpose of this utility model is the shortcoming and defect overcoming above-mentioned prior art, provides that a kind of process equipment is simple, applicability is strong, the heating using microwave flue gas desulfur device of economize energy.
The utility model is achieved through the following technical solutions:
A kind of heating using microwave flue gas desulfur device, is characterized in that: the bottom inlet comprising the pressure fan 1 of pipeline connection successively, flowmeter 2, heat exchanger, microwave tube type oven 3, temperature sensor 5, first valve 7, first concentration monitor point 8, desulfurization cavity 11;
Described heating using microwave flue gas desulfur device also comprises feeder 12 and data acquisition unit 9; Feeder 12 is communicated with the top entry of desulfurization cavity 11 successively with the 3rd valve 13 by Venturi tube 17; The top exit of desulfurization cavity 11 connects the second concentration monitor point the 16, the 5th valve 15 and heat exchanger successively by pipeline; Second concentration monitor point 16 is also connected on the bottom inlet pipeline of desulfurization cavity 11 by the 4th valve 14 pipeline;
Described temperature sensor 5 is by the arrival end of the second valve 6 pipeline connection microwave tube type oven 3;
Described first concentration monitor point 8, feeder 12 and the second concentration monitor point 16 are by data wire connection data collector 9 respectively; Data acquisition unit 9 passes through the SO of collection first concentration monitor point 8 and the second concentration monitor point 16 2concentration data, to control the charging rate of feeder 12, and monitors SO 2whether reach default concentration of emission, to control the opening and closing of the 5th valve 15 and the 4th valve 14.
Be provided with tube furnace cavity 4 in described microwave tube type oven 3, in tube furnace cavity 4, be provided with magnetron.
Heating using microwave fume desulphurization method is as follows:
Step one: flue gas enters heat exchanger by pressure fan 1 with certain flow velocity, after heat exchanger heating, enter microwave tube type oven 3 again, magnetron microwave also heats up, and heats flue gas;
Step 2: temperature sensor 5 detects the flue gas through heating, if flue-gas temperature is not interval at design temperature, the first valve 7 is closed, and the second valve 6 is opened, and flue gas reenters in microwave tube type oven 3 and heats; If flue-gas temperature is within the temperature range of setting, the second valve 6 is closed, and the first valve 7 is opened, and flue gas through the first concentration monitor point 8 and after gathering a concentration data by data acquisition unit 9, then enters in desulfurization cavity 11 from bottom to top; Now the 3rd valve 13 is opened, and dispenser 12 is sent to desulfurizing agent in desulfurization cavity 11 from top to bottom by Venturi tube 17;
Step 3: when the flue gas of desulfurization is through the second concentration monitor point 16
(1) if SO in flue gas 2concentration is identical with the concentration of the first concentration monitor point 8, illustrates that desulfurizing agent loses desulfurized effect, and the slag-drip opening 10 of desulfurization cavity 11 is opened, the desulfurizing agent of discharge, and meanwhile feeder 12 continues to add desulfurizing agent in desulfurization cavity 11;
(2) if flue gas reaches default discharge value, then the 5th valve 15 is opened, and the 4th valve 14 is closed, and treated flue gas enters air through heat exchanger; If flue gas does not reach default discharge value, the 5th valve 15 is closed, and the 4th valve 14 is opened, and flue gas is back on the bottom inlet pipeline of desulfurization cavity 11 again, reenters in desulfurization cavity 11.
Desulfurizing agent is mainly CaO powder, and flue gas time of staying in desulfurization cavity 11 is about 8s ~ 10s; The master equation that desulfurizing agent and flue gas react in desulfurization cavity 11 is as follows:
The utility model, relative to prior art, has following advantage and effect:
1, add heat smoke by magnetron microwave, heating is rapid and energy consumption is less.
2, adopt temperature sensor, ensure that flue-gas temperature maintains within the scope of best desulfurization reaction temperature, thus greatly improve SO in flue gas 2removal efficiency.
3, adopt the high temperature resistant desulfurization cavity of larger space, can SO be ensured 2in the time of staying of desulphurization reaction cavity, improve SO 2removal effect.
4, by detecting SO in the import of desulfurization cavity and outlet 2concentration difference automatically regulate feeder to add desulfurizing agent.
5, pipeline to add after the first concentration monitor point 8 and the second concentration monitor point 16 detection reaction SO in flue gas 2concentration, ensures SO 2removal effect.
6, flue gas after desulfurization carries out heat exchange through heat exchanger and undesulfured flue gas, can reduce flue gas exit temperature, and economize energy.
7, the simple science of sweetening process, is combined with system, effectively can ensure that fume emission meets national standard limit of smog release requirement, not have secondary pollution relative to wet desulphurization.
8, the utility model technological means is simple and easy to do, and small investment, cost are low, practical, can be widely used in the occasion needing desulfurization, have a extensive future.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the internal structure schematic diagram of Fig. 1 microwave tube type oven 3
Detailed description of the invention
Below in conjunction with specific embodiment, the utility model is more specifically described in detail.
Embodiment
As shown in Figure 1, 2.The utility model discloses a kind of heating using microwave flue gas desulfur device, comprise the bottom inlet of the pressure fan 1 of pipeline connection successively, flowmeter 2, heat exchanger, microwave tube type oven 3, temperature sensor 5, first valve 7, first concentration monitor point 8, desulfurization cavity 11;
Described heating using microwave flue gas desulfur device also comprises feeder 12 and data acquisition unit 9; Feeder 12 is communicated with the top entry of desulfurization cavity 11 successively with the 3rd valve 13 by Venturi tube 17; The top exit of desulfurization cavity 11 connects the second concentration monitor point the 16, the 5th valve 15 and heat exchanger successively by pipeline; Second concentration monitor point 16 is also connected on the bottom inlet pipeline of desulfurization cavity 11 by the 4th valve 14 pipeline; Described first concentration monitor point 8 and the second concentration monitor point 16 are concentration sensor.
Described temperature sensor 5 is by the arrival end of the second valve 6 pipeline connection microwave tube type oven 3;
Described first concentration monitor point 8, feeder 12 and the second concentration monitor point 16 are by data wire connection data collector 9 respectively; Data acquisition unit 9 passes through the SO of collection first concentration monitor point 8 and the second concentration monitor point 16 2concentration data, to control the charging rate of feeder 12, to control the charging rate of feeder 12, and monitors SO 2whether reach default concentration of emission, to control the opening and closing of the 5th valve 15 and the 4th valve 14.
Be provided with tube furnace cavity 4 in described microwave tube type oven 3, in tube furnace cavity 4, be provided with magnetron.
Second concentration monitor point 16 has two purposes, is first the SO recorded 2concentration and the first concentration monitor point 8 contrast, by drawing the desulfurized effect of desulfurizing agent according to collector 9 analysis; Second is whether reach default discharge standard for monitoring the flue gas after desulfurization.
The utility model heating using microwave fume desulphurization method realizes by following steps:
Step one: flue gas enters heat exchanger by pressure fan 1 with certain flow velocity, after heat exchanger heating, enter microwave tube type oven 3 again, magnetron microwave also heats up, and heats flue gas;
Step 2: temperature sensor 5 detects the flue gas through heating, if flue-gas temperature is not interval at design temperature, the first valve 7 is closed, and the second valve 6 is opened, and flue gas reenters in microwave tube type oven 3 and heats; If flue-gas temperature is within the temperature range of setting, the second valve 6 is closed, and the first valve 7 is opened, and flue gas through the first concentration monitor point 8 and after gathering a concentration data by data acquisition unit 9, then enters in desulfurization cavity 11 from bottom to top; Now the 3rd valve 13 is opened, and dispenser 12 is sent to desulfurizing agent (being mainly CaO powder) in desulfurization cavity 11 from top to bottom by Venturi tube 17;
Flue gas time of staying in desulfurization cavity 11 is about 8s ~ 10s; The master equation that desulfurizing agent and flue gas react in desulfurization cavity 11 is as follows:
Step 3: when the flue gas of desulfurization is through the second concentration monitor point 16
(1) if SO in flue gas 2concentration is identical with the concentration of the first concentration monitor point 8, illustrates that desulfurizing agent loses desulfurized effect, and the slag-drip opening 10 of desulfurization cavity 11 is opened, the desulfurizing agent of discharge, and meanwhile feeder 12 continues to add desulfurizing agent in desulfurization cavity 11;
(2) if flue gas reaches default discharge value, then the 5th valve 15 is opened, and the 4th valve 14 is closed, and treated flue gas enters air through heat exchanger; If flue gas does not reach default discharge value, the 5th valve 15 is closed, and the 4th valve 14 is opened, and flue gas is back on the bottom inlet pipeline of desulfurization cavity 11 again, reenters in desulfurization cavity 11.
As mentioned above, just the utility model can be realized preferably.
Embodiment of the present utility model is not restricted to the described embodiments; other are any do not deviate from Spirit Essence of the present utility model and principle under do change, modification, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.

Claims (3)

1. a heating using microwave flue gas desulfur device, is characterized in that: the bottom inlet comprising the pressure fan (1) of pipeline connection successively, flowmeter (2), heat exchanger, microwave tube type oven (3), temperature sensor (5), the first valve (7), the first concentration monitor point (8), desulfurization cavity (11);
Described heating using microwave flue gas desulfur device also comprises feeder (12) and data acquisition unit (9); Feeder (12) is communicated with the top entry of desulfurization cavity (11) successively with the 3rd valve (13) by Venturi tube (17); The top exit of desulfurization cavity (11) connects the second concentration monitor point (16), the 5th valve (15) and heat exchanger successively by pipeline; Second concentration monitor point (16) is also connected on the bottom inlet pipeline of desulfurization cavity (11) by the 4th valve (14) pipeline;
Described temperature sensor (5) is by the arrival end of the second valve (6) pipeline connection microwave tube type oven (3);
Described first concentration monitor point (8), feeder (12) and the second concentration monitor point (16) are by data wire connection data collector (9) respectively; Data acquisition unit (9) is by the SO of collection first concentration monitor point (8) and the second concentration monitor point (16) 2concentration data, controls the charging rate of feeder (12), and monitors SO 2whether reach default concentration of emission, to control the opening and closing of the 5th valve (15) and the 4th valve (14).
2. heating using microwave flue gas desulfur device according to claim 1, it is characterized in that: be provided with tube furnace cavity (4) in described microwave tube type oven (3), tube furnace cavity is provided with magnetron in (4).
3. heating using microwave flue gas desulfur device according to claim 1 or 2, is characterized in that: described first concentration monitor point (8) and the second concentration monitor point (16) are concentration sensor.
CN201520922093.3U 2015-11-18 2015-11-18 Microwave heating flue gas desulphurization device Active CN205199300U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520922093.3U CN205199300U (en) 2015-11-18 2015-11-18 Microwave heating flue gas desulphurization device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520922093.3U CN205199300U (en) 2015-11-18 2015-11-18 Microwave heating flue gas desulphurization device

Publications (1)

Publication Number Publication Date
CN205199300U true CN205199300U (en) 2016-05-04

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Country Status (1)

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CN (1) CN205199300U (en)

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