CN208260532U - A kind of gas cleaning reactor and flue gas purification system - Google Patents

Abstract

The utility model discloses a kind of gas cleaning reactor and flue gas purification system.The gas cleaning reactor of offer includes shell, slurry pipe and the cone being used cooperatively and taper ring；The cone and the taper ring are respectively positioned in the reaction compartment that the shell surrounds；The slurry pipe protrudes into the reaction compartment；The shell upper end forms smoke inlet, and in the shell, the part at least adjacent to the smoke inlet is provided with cooling device.In flue gas to be clean biggish using the gas cleaning reactor for treatment temperature difference, the cooling of cooling device can be passed through, reduce smoke temperature change range to be clean, or within the scope of so that the flue gas to be clean into reaction compartment is maintained at appropriate, the material of gas cleaning reactor is set to be suitble to the temperature range, corresponding corrosion resistance is kept, the adaptability of gas cleaning reactor is improved, increases the service life of gas cleaning reactor.

Description

A kind of gas cleaning reactor and flue gas purification system

Technical field

The utility model relates to flue gases purifications, and in particular to a kind of gas cleaning reactor and flue gas purification system.

Background technique

Currently, flue gas can be generated due to coal-fired fuel in the production of the enterprises such as thermal power generation and metal smelt；These flue gases In contain SO₂And the pollutants such as NOx, these pollutants have formed the main contributor of atmosphere pollution.

Currently, according to principle difference, there is absorption process, absorption method, catalyzed conversion there are many purification method is carried out to flue gas Method, bioanalysis and plasma method etc..Wherein, absorption process is most common mode, and cardinal principle is will be in flue gas by absorption Separated from contaminants come out, and then reach remove SO₂And the purpose of the pollutants such as NOx.Wherein, wet absorption is current using most Extensive mode.

Existing absorption process flue gas purification system includes gas cleaning reactor.The flue gas to be purified (flue gas to be clean) is passed through In gas cleaning reactor, in gas cleaning reactor, pollutant in flue gas is absorbed using absorbent, is realized to cigarette Then purified flue gas is then exhausted from or is carried out other processing by the purification of gas；Absorbed pollutant can carry out innoxious Processing is recycled accordingly.

Applicant proposes a kind of gas cleaning reactor, the cigarette in Chinese patent literature CN103566728B Gas purification reactor includes shell, and shell surrounds scheduled reaction compartment, is arranged with taper ring and cone in reaction compartment Cone structure part is formed, the slurry pipe for supplying absorbent slurry is also set up, slurry pipe protrudes into reaction compartment from top, slurry Liquid pipe inner end forms injection point；Smoke inlet is formed above shell, and flue gas to be clean is introduced by reaction by smoke inlet In space.In reaction compartment, the absorbent slurry supplied from injection point is mixed with flue gas to be clean, then is flowed to and be used cooperatively Taper ring and cone, contact absorbent slurry with flue gas to be clean, with realize treat pollutant in purifying smoke It absorbs.

Flue gas to be clean is typically derived from corresponding industrial system (e.g., metal smelting furnace or boiler), the cigarette to be clean of generation It is low that temperature degree has height to have, and difference is larger, and the flue-gas temperature that such as coloured smelting system generates may be at 350 degree or so, special circumstances Under can achieve 400~500 degree, improper state (such as accident) can reach 600-700 degree；Aluminium, magnesium, rare-earth smelting are produced Raw flue gas, may be down to 65 degree or less；For the flue gas to be clean that electric system boiler generates, temperature may be at 120 degree Between~-140 degree.

To reactor corrosion effect, there is also very big difference under difficult environmental conditions for flue gas to be clean；Wherein, temperature It is to determine the corrosive key factor of gaseous smoke.For example, at normal temperature, dilute acid soln does not corrode stainless steel substantially, but Under higher temperature, it is just easy to corrosion stainless steel.

In order to extend the service life of reactor, it is suitble to the needs of different flue gases to be clean, often with different materials Make reactor；This adds increased the technical process and cost of reactor production.

But when being directed to same industrial system, under different operating conditions, the temperature for generating flue gas also has very big difference, makes Reactor is obtained to be difficult to adapt to the higher situation of flue-gas temperature under special operation condition (such as accident conditions).

Utility model content

The purpose of this utility model is to provide a kind of gas cleaning reactor, which is adapted to not Synthermal flue gas to be clean has stronger adaptability.

Based on the smoke reaction device, the utility model also provides a kind of gas cleaning system including the gas cleaning reactor System.

Based on above-mentioned purpose, a kind of gas cleaning reactor provided by the invention includes shell, slurry pipe and is used cooperatively Cone and taper ring；The cone and the taper ring are respectively positioned in the reaction compartment that the shell surrounds；The slurry pipe It protrudes into the reaction compartment；The shell upper end forms smoke inlet, in the shell, at least adjacent to the smoke inlet Part is provided with cooling device.When gas cleaning reactor carries out purification reaction work, flue gas to be clean can be entered by flue gas Mouthful enter reaction compartment in, close to smoke inlet part be arranged cooling device can to enter flue gas to be clean carry out it is cold But, to reduce the temperature of flue gas to be clean.In this way, biggish to be clean by the temperature difference of different industrial system outputs handling Flue gas, or when the biggish flue gas to be clean of the temperature difference that is generated under different operating conditions by same industrial system of processing, can be with By the cooling of cooling device, the temperature of flue gas to be clean is reduced, or is maintained at the flue gas to be clean into reaction compartment Within the scope of appropriate, the material of gas cleaning reactor is allow to be suitble to the temperature range, keeps corresponding corrosion resistance, mention The adaptability of high gas cleaning reactor increases the service life of gas cleaning reactor.

In optional technical solution, the cooling device is the refrigerant pipe being arranged in housing wall, the refrigerant pipe stage property There are inlet and liquid outlet.The heat of flue gas to be clean can be absorbed in the refrigerant recycled in refrigerant pipe, realizes to be clean The cooling of flue gas.

In further optional technical solution, the cooling device further includes the heat dissipation that inner end is connected with the refrigerant pipe The outer end of piece, the cooling fin extends to outside the shell.Cooling fin is set, heat dissipation area can be increased, improves heat exchange efficiency, Improve the cooling velocity of cooling device.

In another optional technical solution, the cooling device includes spray tube and multiple sprays for communicating with the spray tube Mouth is drenched, the spray port is towards the reaction compartment.By spray port into reaction compartment direct spraying cooling liquid, can be faster The cooling flue gas to be clean in ground, improves cooling velocity, guarantees cooling effect.

In further optional technical solution, the opening of the spray port is concordant with the inner wall of the shell；In this way may be used To reduce the blocking that spray port treats purifying smoke, enter flue gas to be clean swimmingly in reaction compartment.

In further technical solution, in the reaction compartment, tapered channel is formed below the smoke inlet；From upper In downwardly direction, the sectional area of the tapered channel is gradually increased.When flue gas to be clean passes through tapered channel, due to section Product increases, and flowing velocity decline can increase gas-liquid contact time, connect flue gas to be clean preferably with the coolant liquid of spray Touching improves cooling effect.

Further technical solution mouth, the inclination upwards of the direction of the spray port.It can make the coolant liquid of spray so more Earlyly with smoke contacts to be clean, improve cooling effect.

In further technical solution, the entrance of the spray tube is communicated with the slurry pipe.I.e. with flue gas to be clean The slurries of reaction are sprayed into as coolant liquid by spray port, this supplies the device of coolant liquid there is no need in addition be separately provided, into And on the one hand can simplify the structure of gas cleaning reactor, and the reliability of gas cleaning reactor is improved, it on the other hand, can To avoid individually for coolant liquid to the diluting effect as absorbent slurry；Be determined as absorbent slurry with when concentration When, there is no need to individually consider the diluting effect of coolant liquid again, and then it can simplify the operating process of gas cleaning reactor.

In further technical solution, in the reaction compartment, swirl channel is formed below the smoke inlet；It is described Swirl channel inner wall has the deflector for inwardly stretching out, extending in the shape of a spiral.Flue gas to be clean can be guided to rotate in this way, changed Treat the cooling effect of purifying smoke kindly.

Flue gas purification system provided by the invention, including gas cleaning reactor, absorbent slurry pond and absorbent circulation Pipeline is provided with circulating pump in the absorbent circulation line, wherein the gas cleaning reactor is any of the above-described kind of flue gas Purification reactor, the inlet of the absorbent circulation line are communicated with the absorbent slurry pond, the absorbent circulation pipe The liquid outlet on road is communicated with the outer end of the slurry pipe.Due to gas cleaning reactor can above-mentioned technical effect, the flue gas is net Change system can also generate corresponding technical effect.

Detailed description of the invention

Fig. 1 is the principle schematic diagram for the gas cleaning reactor that the utility model embodiment one provides.

Fig. 2 is the principle schematic diagram for the gas cleaning reactor that another embodiment of the utility model provides.

Fig. 2-1 is part-structure enlarged drawing in Fig. 2.

Specific embodiment

The specific embodiment of gas cleaning reactor and flue gas purification system provided by the utility model is described below, it should Gas cleaning reactor and flue gas purification system can be used for desulfurization or/and denitration or remove other pollutants of flue gas.

Referring to FIG. 1, the figure is the structural principle signal for the gas cleaning reactor that the utility model embodiment one provides Figure.

The gas cleaning reactor includes shell 100, slurry pipe 300 and the cone 220 being used cooperatively and taper ring 210. The cone 220 and the taper ring 210 are respectively positioned in the reaction compartment 101 that the shell 100 surrounds, and form pyramidal structure Part.In the present embodiment, multiple cones 220 and taper ring 210 are provided in reaction compartment 101；Corresponding cone 220 and taper ring 210 cooperatively form multiple groups tapering structural member.

The slurry pipe 300 protrudes into the reaction compartment 101；Slurry pipe 300 can be with absorbent circulation pipe appropriate Road communicates, to supply the slurries as absorbent into reaction compartment 101.

100 upper end of shell forms smoke inlet 102.Smoke inlet 102 is communicated with flue appropriate, will be pre- The flue gas to be clean for determining work system generation introduces, and flue gas to be clean is made to enter gas cleaning reactor by smoke inlet 102 In, and the slurry liquid contacts as absorbent and react, realizes the purification to flue gas.

In shell 100, the part close to the smoke inlet 102 is provided with cooling device.In the present embodiment, cooling device For the refrigerant pipe 410 being arranged in 100 wall of shell, refrigerant pipe 410 has inlet and liquid outlet, so that as coolant liquid Refrigerant circulated in refrigerant pipe, the heat of constant absorption flue gas to be clean is realized and treats the cooling of purifying smoke.For It is conducted convenient for heat, improves cooling effect, the partial shell 100 that is provided with refrigerant pipe 410 can be manufactured by metal material. Certainly, it can be exposed to reaction compartment 101 in 410 a part of refrigerant pipe, at this point, shell 100 can also be by other materials system It makes.According to actual needs, multiple (group) refrigerant pipes 410 can be set, it can also refrigerant pipe 410 determine according to actual needs Distribution in the up-down direction, to guarantee cooling effect.

When the gas cleaning reactor carries out purification reaction work, flue gas to be clean can be entered by smoke inlet 102 In reaction compartment, the heat of flue gas to be clean can be absorbed in the refrigerant pipe 410 that the part close to smoke inlet 102 is arranged, It realizes and is cooled down into flue gas to be clean, reduce the temperature of flue gas to be clean.

Using the gas cleaning reactor, handling the higher temperature by industrial system (such as coloured smelting system) output It, can be by increasing the side such as the circulation rate of refrigerant or holding refrigerant lower temperature in refrigerant pipe 410 when flue gas to be clean Formula improves cooling efficiency, absorbs flue gas heat to be clean, its temperature is made to decline biggish amplitude；It is handling by industrial system (such as Electric system boiler) output lower temperature flue gas to be clean when, flue gas temperature to be clean can be made by adjusting relevant parameter Degree declines lesser amplitude；In turn, the gas cleaning reactor of identical material manufacture is made to be adapted to handle different industry systems The flue gas to be clean for the different temperatures generated of uniting, keeps scheduled corrosion resistance.

In the flue gas to be clean for the higher temperature that processing is generated by same industrial system, refrigerant pipe 410 can be made to protect Hold higher heat exchange amount；In the opposite case, refrigerant pipe 410 is made to keep lower heat exchange amount；In turn, make to enter reaction sky Between flue-gas temperature be maintained at scheduled within the scope of, make the gas cleaning reactor be adapted to processing different temperatures to Purifying smoke.

In this way, can reduce the temperature change into flue gas to be clean in reaction compartment 101 using the gas cleaning reactor Change range, or within the scope of so that the flue-gas temperature to be clean into reaction compartment 101 is maintained at appropriate, keeps gas cleaning anti- The temperature range can be suitble to by answering the material of device, keep corresponding corrosion resistance, improve the adaptability of reactor, and it is net to increase flue gas Change the service life of reactor.

In optimal technical scheme, the cooling device can also include the heat dissipation that inner end is connected with the refrigerant pipe 410 The outer end of piece (not shown), the cooling fin extends to outside the shell 100.Cooling fin is set, radiating surface can be increased Product improves heat exchange efficiency, improves cooling velocity.Certainly, cooling device can also be connected with heat reclaim unit appropriate, will The heat (not passing through by cooling fin or cooling fin) that cooling device absorbs is recycled, and recyclable device can be net with flue gas Change the channel that the outlet of reactor communicates, to heat purified flue gas, realizes the recycling to heat.

Fig. 2 and 2-1 is please referred to, which is that the structure for the gas cleaning reactor that another embodiment of the utility model provides is shown Intention and magnified partial view.With embodiment one the difference is that: the cooling device include spray tube 421 and with the spray tube The 421 multiple spray ports 422 communicated.Spray tube 421 can be located in shell 101；The master of spray port 422 is uniformly distributed circumferentially, And it is communicated with spray tube 421.Spray port 422 is towards the reaction compartment 101.Coolant liquid passes through spray tube 421, spray port 422 It is ejected into reaction compartment 101, and is contacted with the flue gas to be clean entered from smoke inlet 102 later, absorbed to flue gas Heat；Flue gas to be clean can be quickly cooled down in this way, improves cooling velocity, guarantee cooling effect.

Certainly, according to actual needs, can by spray tube 421 be arranged outside shell 100, while make spray port 422 with The holding of spray tube 421 communicates (as by pipeline appropriate).Spray tube 421 can also be made to be partially exposed in reaction compartment 101, Spray port 422 is formed in the outer wall of spray tube 421.In the utility model, spray port 422 can be by independently of spray tube 422 Component is formed, and can also be formed by the structure integrally formed with spray tube 422.

In order to reduce the blocking that spray port 422 treats purifying smoke, flue gas to be clean is made swimmingly to enter reaction compartment 101 In, in optimal technical scheme, the opening of the spray port 422 is concordant with the inner wall of the shell 100.

Referring to FIG. 2, in the reaction compartment 101, being also formed with below the smoke inlet 102 in the present embodiment The tapered channel 110 of predetermined length.On direction from the top down, the sectional area of the tapered channel 110 is gradually increased, i.e. shape It is smaller at a top, the biggish structure in lower part.When flue gas to be clean passes through tapered channel 110, since cross-sectional flow area increases Add, flowing velocity can be gradually reduced, and then can preferably be contacted with the coolant liquid of spray, and cooling effect is improved.

As shown in Fig. 2-1, in the present embodiment, the inclination upwards of the direction of the spray port 422.It can make the cold of spray in this way But liquid improves cooling effect earlier with smoke contacts to be clean.Certainly, according to actual needs, the direction of spray port 422 can be made It tilts down, or is tilted to other directions.

Supply coolant liquid can be set.After being injected into reaction compartment 101 due to coolant liquid can with as absorbent slurry Mixing, and then can generate to the diluting effect as absorbent slurry；In order to guarantee assimilation effect, need in supply as absorption When the slurries of agent, the diluting effect of coolant liquid is considered.

In the present embodiment, the entrance of the spray tube 422 can be communicated with the slurry pipe 421.I.e. with cigarette to be clean The slurries of solid/liquid/gas reactions are sprayed into as coolant liquid by spray port 422, in this way, there is no need in addition be supplied separately to coolant liquid.With list Solely it is arranged and the structure for supplying coolant liquid is compared, on the one hand gas cleaning reactor provided in this embodiment can simplify structure, Improve the reliability of gas cleaning reactor；It on the other hand, can be to avoid individually for coolant liquid to as the dilute of absorbent slurry Release effect；In this way, there is no need to individually consider the dilution of coolant liquid again being determined as when matching when concentration of absorbent slurry Effect, and then simplify the operating process of gas cleaning reactor.

It, can be below the smoke inlet 102 in the reaction compartment 101 in further optional technical solution Form swirl channel appropriate；The swirl channel inner wall has the deflector for inwardly stretching out, extending in the shape of a spiral (in figure not It shows).In this way, flue gas to be clean can be guided to rotate, improve the cooling effect of flue gas to be clean.

Based on above-mentioned gas cleaning reactor, the utility model embodiment also provides a kind of flue gas purification system.The flue gas Purification system includes gas cleaning reactor, absorbent slurry pond and absorbent circulation line, in the absorbent circulation line It is provided with circulating pump, wherein the gas cleaning reactor is any of the above-described kind of gas cleaning reactor, the absorbent circulation The inlet of pipeline is communicated with the absorbent slurry pond, the liquid outlet of the absorbent circulation line and the slurry pipe it is outer End communicates.Since gas cleaning reactor can generate above-mentioned technical effect, which can also be generated accordingly Technical effect.

Foregoing description is only preferred embodiments of the present invention, it is noted that for the common skill of the art For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and Retouching also should be regarded as the protection scope of the utility model.

Claims (10)

1. a kind of gas cleaning reactor, including shell, slurry pipe and the cone being used cooperatively and taper ring；The cone and institute Taper ring is stated to be respectively positioned in the reaction compartment that the shell surrounds；The slurry pipe protrudes into the reaction compartment；Its feature exists In the shell upper end forms smoke inlet；In the shell, the part of the smoke inlet is provided with cooling dress It sets.

2. gas cleaning reactor according to claim 1, which is characterized in that the cooling device is to be arranged in housing wall In refrigerant pipe, the refrigerant pipe have inlet and liquid outlet.

3. gas cleaning reactor according to claim 2, which is characterized in that the cooling device further includes inner end and institute The connected cooling fin of refrigerant pipe is stated, the outer end of the cooling fin extends to outside the shell.

4. gas cleaning reactor according to claim 1, which is characterized in that the cooling device include spray tube and with Multiple spray ports that the spray tube communicates, the spray port is towards the reaction compartment.

5. gas cleaning reactor according to claim 4, which is characterized in that the opening of the spray port and the shell Inner wall it is concordant.

6. gas cleaning reactor according to claim 4, which is characterized in that in the reaction compartment, the flue gas Tapered channel is formed below entrance；On direction from the top down, the sectional area of the tapered channel is gradually increased.

7. gas cleaning reactor according to claim 6, which is characterized in that the inclination upwards of the direction of the spray port.

8. gas cleaning reactor according to claim 4, which is characterized in that the entrance of the spray tube and the slurries Pipe communicates.

9. gas cleaning reactor according to any one of claims 1 to 8, which is characterized in that in the reaction compartment, Swirl channel is formed below the smoke inlet；The swirl channel inner wall have inwardly stretch out, leading of extending in the shape of a spiral Flowing plate.

10. a kind of flue gas purification system, including gas cleaning reactor, absorbent slurry pond and absorbent circulation line, described Circulating pump is provided in absorbent circulation line, which is characterized in that the gas cleaning reactor is to appoint in claim 1 to 9 Gas cleaning reactor described in one, the inlet of the absorbent circulation line are communicated with the absorbent slurry pond, institute The liquid outlet for stating absorbent circulation line is communicated with the outer end of the slurry pipe.