CN109569184A

CN109569184A - A kind of Analytic Tower, flue gas purification system and flue gas purifying method

Info

Publication number: CN109569184A
Application number: CN201910001947.7A
Authority: CN
Inventors: 魏进超; 李俊杰; 傅旭明
Original assignee: Zhongye Changtian International Engineering Co Ltd
Current assignee: Zhongye Changtian International Engineering Co Ltd
Priority date: 2019-01-02
Filing date: 2019-01-02
Publication date: 2019-04-05
Anticipated expiration: 2039-01-02
Also published as: CN109569184B

Abstract

A kind of Analytic Tower, Analytic Tower A include bringing-up section 1, changeover portion 2, cooling section 3；The top of Analytic Tower A is arranged in bringing-up section 1, and the lower part of Analytic Tower A is arranged in cooling section 3, and changeover portion 2 is arranged between bringing-up section 1 and cooling section 3；The side wall of changeover portion 2 is equipped with SRG gas vent 201；The top of Analytic Tower A is equipped with first charging aperture A01 and second charging aperture A02；SRG gas dust-removing device 4 is arranged right below in changeover portion 2 and positioned at second charging aperture A02；SRG gas dust-removing device 4 is located at the inside of SRG gas vent 201, and SRG gas dust-removing device 4 and SRG gas vent 201 are closely arranged.Analytic Tower of the invention, a feed inlet is added on the basis of existing feed inlet, SRG gas dust-removing device is set in the underface changeover portion for the feed inlet added simultaneously, and the filtration, purification function of the clean active carbon through being sieving through realizes the dedusting of SRG gas after effective use parsing.

Description

A kind of Analytic Tower, flue gas purification system and flue gas purifying method

Technical field

The present invention relates to activated carbon method flue gas purification systems, and in particular to a kind of Analytic Tower, flue gas purification system and flue gas Purification method belongs to field of environment protection.

Background technique

For the sintering device flue gas of industrial smoke, especially steel and iron industry, conciliate using including activated carbon adsorber The desulphurization and denitration device and technique for analysing tower are more satisfactory.It is including activated carbon adsorber and Analytic Tower (or regenerator) In desulphurization and denitration device, activated carbon adsorber is used for from sintering flue gas or exhaust gas (the especially sintering cigarette of the sintering machine of steel and iron industry Gas) in pollutant of the absorption including oxysulfide, nitrogen oxides and dioxin including, and Analytic Tower for active carbon it is hot again It is raw.

Activated carbon desulfurization has desulfurization degree height, denitration can be achieved at the same time, de- dioxin, dedusting, do not generate waste water and dregs The advantages that, it is extremely promising flue gas purifying method.Active carbon can regenerate at high temperature, when temperature is higher than 350 DEG C, absorption (sulfur dioxide is solved for the pollutants such as oxysulfide, nitrogen oxides, dioxin on the activated carbon generation fast resolving or decomposition Analysis, nitrogen oxides and dioxin are decomposed).And as the temperature rises, the reproduction speed of active carbon is further speeded up, regeneration Time shortens, and preferably regenerating active carbon temperature is approximately equal to 430 DEG C in general control Analytic Tower, therefore, ideal parsing temperature Spending (or regeneration temperature) is for example in 390-450 DEG C of range, more preferably in 400-440 DEG C of range.

The effect of Analytic Tower is by the SO of activated carbon adsorption₂It releases, while stopping in 400 DEG C or more of temperature and centainly It stays under the time, dioxin decomposable 80% or more, active carbon recycles again after cooling, screening.The SO released₂It can make Sulfuric acid etc., the communicated device of active carbon after parsing are sent to adsorption tower and are re-used to absorption SO₂With NOx etc..

SCR, SNCR etc. occurs with ammonia with NOx in Analytic Tower in adsorption tower to react, to remove NOx.Dust is passing through suction It is tightly held by activated carbon when attached tower, the vibrating screen in Analytic Tower bottom end is separated, and is that active carbon powder sends to ash cellar under sieving, then Blast furnace can be sent to or sintering is used as fuel.

Traditional activated carbon method flue gas purification system is as depicted in figs. 1 and 2, and flue gas realizes purification process by adsorption tower In, dust is filtered down by active carbon in flue gas in adsorption tower, while pollutant SO₂Into being adsorbed in the duct of active carbon Get off, the reaction of generation are as follows:

SO₂(gaseous state) → SO₂(ADSORPTION STATE)；

SO₂(ADSORPTION STATE)+H₂O+1/2O₂→H₂SO₄；

Dust and H are adsorbed₂The active carbon of SO4 is sent into Analytic Tower through conveying device, is regenerated under the high temperature conditions Reaction, including H in active carbon duct₂The decomposition of SO4:

This reaction reopens the active carbon duct of script blocking, but since the evolution of the gas of generation can also generate largely Fugitive dust, the carrier gas N in Analytic Tower₂The former exhaust gas dust that carry fugitive dust and activated carbon adsorption is exported from SRG (i.e. sulfur-rich gas) Discharge.Cause SRG fuel gas and dust concentration higher, typically about 2g/m³, when highest can reach 10g/m³More than, increase subsequent richness The load of sulphur gas purification facility, influences SO₂The quality of resource utilization product, or even cause SO₂Resource utilization process without Method operates normally.

Summary of the invention

For above-mentioned problems of the prior art, the present invention provides a kind of Analytic Tower, and the Analytic Tower is in existing charging A feed inlet is added on the basis of mouthful, and is equipped with SRG gas dust-removing device in changeover portion.Using Analytic Tower of the present invention When, active carbon is filled in SRG gas dust-removing device, which is the bulky grain active carbon through being sieving through after parsing, Its own does not contain or only containing few dust and labile pollutant, first passes through SRG gas before the discharge of SRG gas and remove Dirt device is dusted, and greatly reduces dust concentration in SRG gas, so that the load of sulfur-rich gas purification facility is alleviated, It ensure that SO₂The quality of resource utilization product.

The present invention also proposes a kind of flue gas purification system and flue gas purifying method on the basis of novel Analytic Tower, passes through The flue gas purification system and flue gas purifying method can be realized the accurate control to system activity charcoal stream, and then realize flue gas Purification and SRG gas dedusting.

The first embodiment according to the present invention, provides a kind of Analytic Tower:

A kind of Analytic Tower, the Analytic Tower include bringing-up section, changeover portion, cooling section.The top of Analytic Tower is arranged in bringing-up section, The lower part of Analytic Tower is arranged in cooling section, and changeover portion is arranged between a heating section and a cooling section.The side wall of changeover portion is equipped with SRG Gas vent.The top of the Analytic Tower is equipped with first charging aperture and second charging aperture.In changeover portion and it is located at second charging aperture It is arranged right below SRG gas dust-removing device.SRG gas dust-removing device is located at the inside of SRG gas vent, and SRG dedusting Device is closely arranged with SRG gas vent.

Preferably, being equipped with first partition between first charging aperture and second charging aperture.The lower end of first partition and heating The top connection of section.

Preferably, the top side of SRG gas dust-removing device be equipped with second partition, and second partition setting with SRG The opposite side of gas vent.The upper end of second partition and the bottom connection of bringing-up section and lower end and SRG gas dust-removing device connect It connects.

Preferably, first partition and second partition are arranged in parallel with the side where SRG gas vent, and second every The underface of first partition is arranged in plate.

In the present invention, the SRG gas dust-removing device is active carbon channel layer.The top and bottom of active carbon channel layer It is hatch frame.

Preferably, the left and right sides of SRG gas dust-removing device is respectively shutter or perforated plate construction.

In the present invention, SRG gas collection device is equipped in changeover portion.The setting of SRG gas dust-removing device converges in SRG gas Between acquisition means and SRG gas vent.

The left and right sides of SRG gas dust-removing device refers to inlet end and the outlet side of SRG gas dust-removing device.Wherein, SRG The inlet end of gas dust-removing device is connected to SRG gas collection device, and the outlet side connection SRG gas of SRG gas dust-removing device goes out Mouthful.

Preferably, SRG gas collection device includes loading plate and multiple active carbon streams for being connected in loading plate bottom surface Circulation passage.There are gap between each active carbon circulation passage, the gap is SRG air ventilation passage.Active carbon circulation passage Top and bottom be hatch frame.The top of SRG air ventilation passage is loading plate, and bottom is hatch frame.

Second of embodiment according to the present invention, provides a kind of flue gas purification system:

A kind of flue gas purification system, including above-mentioned Analytic Tower.The flue gas purification system further includes adsorption tower, the first conveying dress It sets, the second conveying device, third conveying device.First conveying device connects the active carbon outlet and the first of Analytic Tower of adsorption tower Feed inlet, the second conveying device connect the active carbon entrance of the active carbon outlet and adsorption tower of Analytic Tower, and third conveying device connects Connect the second charging aperture of the active carbon outlet and Analytic Tower of Analytic Tower.The bottom of adsorption tower is equipped with the first baiting valve.Analytic Tower Bottom is equipped with the second baiting valve.The first charging aperture of Analytic Tower is also connect with supplement material conveying tube road.

Preferably, the top of adsorption tower is equipped with the first level-sensing device.The second material position is equipped at the first charging aperture of Analytic Tower Meter.Third level-sensing device is equipped at the second charging aperture of Analytic Tower.

Preferably, the lower part of the second baiting valve is equipped with vibrating screen.

The third embodiment according to the present invention, provides a kind of flue gas purifying method:

A kind of flue gas purifying method or the method for carrying out purifying smoke using above-mentioned flue gas purification system, this method includes following Step:

1) former flue gas is transported in adsorption tower by the smoke inlet of activated carbon adsorber, the activated carbon adsorption of adsorption tower Former flue gas is handled, the pollutant in former flue gas is adsorbed the activated carbon adsorption in tower；Flue gas after treatment is from adsorption tower Exhanst gas outlet discharge；

2) active carbon of pollutant has been adsorbed in adsorption tower by the first baiting valve discharge of absorption tower bottom, has then been passed through The first charging aperture that the first conveying device is delivered to Analytic Tower is crossed, the active carbon for having adsorbed pollutant passes through heating in Analytic Tower Regeneration, the second baiting valve by parsing tower bottom are discharged；

3) analytically the active carbon of tower discharge is divided into two parts；A portion is delivered to absorption by the second conveying device The active carbon entrance of tower, the former flue gas of circulation absorption processing；Another part is delivered to the second of Analytic Tower by third conveying device Feed inlet, subsequently into SRG gas dust-removing device, which is used to remove the dust in SRG gas, and SRG gas converges The SRG gas that acquisition means collect is discharged after SRG gas dust-removing device dedusting from SRG gas vent.

Preferably, step 2) further include: analytically the active carbon of tower discharge removes active carbon after vibrating screen sieves In dust particles, the active carbon entrance of adsorption tower is then delivered to by the second conveying device again and by third conveying device It is delivered to the second charging aperture of Analytic Tower.

In the present invention, this method further include: the amount of step 4) active carbon according to needed for handling former flue gas in adsorption tower, In Analytic Tower parse active carbon treating capacity and vibrating screen screening remove active carbon dust amount, by supplement material conveying tube road from The first charging aperture of Analytic Tower supplements new active carbon and enters Analytic Tower.

In the present invention, step 4) specifically:

A) the former flue gas entered in adsorption tower is detected, and combines contaminant removal efficiency requirement, calculate adsorption tower The interior amount for handling the active carbon that former flue gas needs, obtains the discharge quantity M of adsorption tower₁；

B) according to the relationship of the frequency of the first baiting valve and the discharge quantity of adsorption tower, adjust the first baiting valve frequency be with The discharge quantity M of adsorption tower₁Corresponding frequency f₁；

C) the target material position of the first level-sensing device in adsorption tower is set as L_{Target 1}With third below the second charging aperture of Analytic Tower The target material position of level-sensing device is L_{Target 3}, read the material position L of the first level-sensing device₁With the material position L of third level-sensing device₃, according to L₁+L₃With L_{Target 1}+L_{Target 3}Size relation, calculate the discharge quantity M of Analytic Tower₂, so that L₁+L₃=L_{Target 1}+L_{Target 3}；

D) according to the relationship of the frequency of the second baiting valve and the discharge quantity of Analytic Tower, adjust the second baiting valve frequency be with The discharge quantity M of Analytic Tower₂Corresponding frequency f₂；

E) according to the material position L of the first level-sensing device₁With target material position L_{Target 1}Size relation and third level-sensing device material position L₃ With target material position L_{Target 3}Size relation, adjust the second conveying device to the feed time t of adsorption tower₁With third conveying device pair The feed time t of the second charging aperture of Analytic Tower₂, so that L₁=L_{Target 1}, L₃=L_{Target 3}；

F) the target material position of the second level-sensing device below the first charging aperture of Analytic Tower is set as L_{Target 2}, read the second level-sensing device Material position L₂, work as L₂< L_{Target 2}When, new active carbon is supplemented to the first charging aperture of Analytic Tower by supplementing material conveying tube road；When L₂> L_{Target 2}When, stop supplementing new active carbon into Analytic Tower；Finally make L₂=L_{Target 2}。

In the present invention, the former flue gas entered in adsorption tower is detected described in step a), calculates place in adsorption tower The amount for managing the active carbon that former flue gas needs, obtains the discharge quantity M of adsorption tower₁, specifically:

1. calculating the SO that adsorption tower need to be handled₂, NOx amount: the flow for detecting former flue gas is Q, titanium dioxide in former flue gas The concentration of sulphur is C_SO2, former nitrogen oxides in effluent concentration be C_NOx, adsorption tower need to be handled as a result, SO₂, NOx amount difference Are as follows:

W_NOx=η_NOx×Q×C_NOx/10⁶；………(2)

In formula (1),The SO that need to be handled for adsorption tower₂Amount, units/kg/h；Q is the flow of former flue gas, unit Nm³/ h；For SO in former flue gas₂Concentration, unit mg/Nm³；For SO₂Removal efficiency；In formula (2), W_NOxIt is needed for adsorption tower The amount of the NOx of processing, units/kg/h；C_NOxFor the concentration of former nitrogen oxides in effluent, unit mg/Nm³；η_NOxFor the removal of NOx Efficiency；

2. basisAnd W_NOx, calculate the discharge quantity M of adsorption tower₁:

In formula (3), M₁For the discharge quantity of adsorption tower, units/kg/h；k₁For the first coefficient, k₁Value is 5-50, preferably 8- 40, more preferably 10-20；k₂For the second coefficient, k₂Value is 1-40, preferably 3-30, more preferably 5-20.

In the present invention, the frequency f of the first baiting valve (9) described in step b)₁With the discharge quantity M of adsorption tower (8)₁Pass System specifically: M₁=f₁×k₃×l₁×d_{Between 1}×ρ₁/r₁×d_{1 is straight}, in which: k₃Third coefficient, l₁For the length of the first baiting valve round roller Degree, d_{Between 1}For the gap of the first baiting valve round roller, ρ₁For active carbon heap density, r in adsorption tower₁For the round roller of the first baiting valve round roller Maximum (top) speed, d_{1 is straight}For the diameter of the first baiting valve round roller；k₃Value be 0.01-0.2, preferably 0.03-0.15, more preferably 0.05-0.1。

In the present invention, the frequency f of the second baiting valve (10) described in step d)₂With the discharge quantity M of Analytic Tower (A)₂Pass System specifically: M₂=f₂×k₄×l₂×d_{Between 2}×ρ₂/r₂×d_{2 is straight}, in which: k₄4th coefficient, l₂For the length of the second baiting valve round roller Degree, d_{Between 2}For the gap of the second baiting valve round roller, ρ₂For active carbon heap density, r in Analytic Tower₂For the round roller of the second baiting valve round roller Maximum (top) speed, d_{2 is straight}For the diameter of the second baiting valve round roller；k₄Value be 0.01-0.2, preferably 0.03-0.15, more preferably 0.05-0.1。

In the present invention, the frequency f of the second baiting valve is adjusted described in step d)₂, specifically:

Work as L₁+L₃> L_{Target 1}+L_{Target 3}When, reduce the frequency f of the second baiting valve₂；Work as L₁+L₃< L_{Target 1}+L_{Target 3}When, increase the The frequency f of two baiting valves₂, finally make L₁+L₃=L_{Target 1}+L_{Target 3}。

In the present invention, according to the material position L of the first level-sensing device described in step e)₁With target material position L_{Target 1}Size relation, And the material position L of third level-sensing device₃With target material position L_{Target 3}Size relation, when adjusting the second conveying device to the feed of adsorption tower Between t₁With third conveying device to the feed time t of the second charging aperture of Analytic Tower₂, specifically:

As the material position L of the first level-sensing device₁=target material position L_{Target 1}, third level-sensing device material position L₃=target material position L_{Target 3}When, t₁/t₂=d₁/d₂；Wherein, d₁To parse the width between inner wall of tower and first partition close to side immediately below first charging aperture； d₂For the width of SRG gas dust-removing device, i.e. width between second partition and SRG gas vent；

As the material position L of the first level-sensing device₁> target material position L_{Target 1}When, when shortening feed of second conveying device to adsorption tower Between t₁；As the material position L of the first level-sensing device₁< target material position L_{Target 1}When, increase by the second conveying device to the feed time of adsorption tower t₁；

As the material position L of third level-sensing device₃> target material position L_{Target 3}When, shorten third conveying device and Analytic Tower second is fed The feed time t of mouth₂；As the material position L of third level-sensing device₃< target material position L_{Target 3}When, increase third conveying device to Analytic Tower the The feed time t of two feed inlets₂。

In the present invention, the first conveying device and the second conveying device can be conveyer；Such as select conveyer belt as First conveying device and the second conveying device.Third conveying device can be conveyer, be also possible to the biography without power device Transfer device；For example, can choose conveyer belt or chute as third conveying device.

In the present invention, the second conveying device can be set there are two feed opening, and one of feed opening is fed to adsorption tower, Another feed opening is fed to third conveying device.Third conveying device connects a feed opening and the parsing of the second conveying device The second charging aperture of tower.

In the present invention, the top of Analytic Tower is equipped with first charging aperture and second charging aperture.Second charging aperture just under SRG gas dust-removing device is equipped in the changeover portion of side, SRG gas dust-removing device is located at the inside of SRG gas vent, and SRG gas Body dust-extraction unit is closely arranged with SRG gas vent.In the present invention, SRG gas dust-removing device is preferably active carbon channel layer, The inlet end of active carbon channel layer and outlet side are respectively shutter or perforated plate construction.In addition, inlet end and/or outlet side Shutter or perforated plate construction can be set to one or more layers.Preferably, between first charging aperture and second charging aperture also Equipped with first partition, the lower end of first partition and the top of bringing-up section are connected.SRG gas dust-removing device top side (i.e. with The opposite side of SRG gas vent) be additionally provided with second partition, the upper end of second partition and the bottom connection of bringing-up section and lower end and The connection of SRG gas dust-removing device.First partition and second partition are arranged in parallel with the side where SRG gas vent, and the The underface of first partition is arranged in two partitions.In the present invention, the setting of first partition by the first charging aperture of Analytic Tower with Second charging aperture separates, meanwhile, second partition is added, so that from first charging aperture and the active carbon entered from second charging aperture Two stock streams are formed from top to bottom.It is wherein the activity to be resolved for having adsorbed pollutant from the active carbon that first charging aperture enters Charcoal, the amount of activated charcoal have been utilized, and filtration, purification function is limited, and the amount of activated charcoal itself will be generated and largely be raised Dirt is unfavorable for the dedusting of SRG gas.It and is then that the bulky grain through being sieving through is living after parsing from the active carbon that second charging aperture enters Property charcoal, which does not contain or only containing few dust and labile pollutant, its own will not generate fugitive dust, The dedusting of SRG gas can be better achieved.

Present inventor will specially enter the active carbon of Analytic Tower in a kind of parsing tower apparatus of researching and designing before this It is divided into two strands in Analytic Tower.It is a part of normally to pass through bringing-up section, the SRG gas collection device in changeover portion, cooling section, so It is discharged afterwards from outlet；Another part passes through bringing-up section, the SRG dust-extraction unit in changeover portion, cooling section, is then discharged from outlet. But through overtesting and use, discovery uses the parsing tower apparatus, due to being to have adsorbed dirt by the active carbon in Analytic Tower Contaminate object (including sulfur dioxide, nitride, dust) active carbon, by such active carbon analytically tower feed inlet input, exist Following problems: 1, into the active carbon of changeover portion in SRG dust-extraction unit itself contain too many dust and labile pollutant, i.e., Itself just generates a large amount of fugitive dust, which cannot play good dustproof function to SRG gas；2, itself is adsorbed The active carbon of pollutant (including sulfur dioxide, nitride) is in the position of SRG dust-extraction unit, since the flow of SRG gas is opposite It is larger, and entire Analytic Tower is while discharge, the active carbon passed through from SRG dust-extraction unit cannot be parsed sufficiently, in active carbon Pollutant cannot parse completely, so that pollutant cannot be discharged from SRG gas vent, what which did not parsed Pollutant follows active carbon, and analytically tower discharge gate is discharged, and influences the utilization of the next circulation of active carbon；3, since SRG dedusting fills Good dustproof function cannot be played to SRG gas by setting, and cause to contain a large amount of powder out of SRG gas vent is discharged gas Dirt increases the load of subsequent sulfur-rich gas purification facility, influences SO₂The quality of resource utilization product.

By the continuous research and test of inventor, novel Analytic Tower provided by the invention is developed, existing parsing is changed Two active carbon entrances are arranged in the structure of tower, are two chambers by space division in Analytic Tower more than SRG gas vent horizontal position Room.See attached drawing, left chamber (from first charging aperture) input is to have adsorbed the active carbon of pollutant, that is, arrange from adsorption tower Active carbon out, the chamber are specifically used to the active carbon of Dissociative adsorption pollutant.Right chamber (from second charging aperture) input Be fresh active carbon, that is, the active carbon after being parsed by Analytic Tower, the chamber pass through the dress such as shutter or porous plate It sets to form active carbon layer, forms a SRG gas dust-removing device, which is used to SRG dedusting.SRG dedusting dress Setting in the SRG gas that between SRG gas collection device and SRG gas vent, SRG gas collection device collects in left chamber Body is discharged from SRG gas vent again after SRG gas dust-removing device.SRG gas dust-removing device is using as filtering material Active carbon is dusted processing to SRG gas, and the active carbon in SRG gas dust-removing device is fresh active carbon, does not adsorb Pollutant and dust etc., the amount of activated charcoal are the active carbon for only having adsorbed dust, warp after SRG gas dust-removing device Analytically tower discharge port is discharged after supercooling section, can be delivered to adsorption tower and be recycled.

The feed inlet of Analytic Tower is divided into two by the present invention, and by the top half of Analytic Tower, (feed inlet goes out to SRG gas Mouthful) be also divided into two, wherein the active carbon layer for dedusting forms SRG gas dust-removing device, which is new fresh and alive Property charcoal, solves in the prior art that the amount of activated charcoal dust removing effects are limited, and pollutant is difficult to the problem of parsing；Cleverly utilize Active carbon removes dust as filtering material；Meanwhile the next step for not influencing active carbon recycles.

The present invention also provides a kind of flue gas purification system, which includes above-mentioned Analytic Tower, further includes inhaling Attached tower, the first conveying device, the second conveying device and third conveying device.Wherein, the first conveying device is for will be from adsorption tower The active carbon for having adsorbed pollutant of active carbon outlet discharge be delivered to the first charging aperture of Analytic Tower, the second conveying device is used In the active carbon entrance that the active carbon after the regeneration of the active carbon of analytically tower outlet discharge is delivered to adsorption tower, third conveying Device is used to for the active carbon after the regeneration of the active carbon outlet discharge of analytically tower being delivered to the second charging aperture of Analytic Tower.Solution The first charging aperture for analysing tower is also connect with supplement material conveying tube road.The top of adsorption tower is equipped with the first level-sensing device, and the of Analytic Tower One feed inlet and second charging aperture are respectively equipped with the second level-sensing device and third level-sensing device.

Correspondingly, the present invention is also based on above-mentioned flue gas purification system and provides a kind of flue gas purifying method, this method setting the The target material position of one level-sensing device, the second level-sensing device and third level-sensing device is respectively L_{Target 1}、L_{Target 2}、L_{Target 3}, and read the first material position The practical material position L of meter, the second level-sensing device and third level-sensing device₁、L₂、L₃, according to the practical material position of each level-sensing device and target material position Relationship is adjusted, so that L₁=L_{Target 1}, L₂=L_{Target 2}, L₃=L_{Target 3}, thus realize the accurate control to active carbon stream, so that Entire flue gas purification system is organic, normal operation.The control method specifically: former flue gas is detected first, passes through meter Calculate the SO that adsorption tower need to be handled₂, NOx amount, the discharge quantity M of adsorption tower is calculated₁, further according to the discharge quantity M of adsorption tower₁? To the blanking frequency f of the first baiting valve₁；Then according to L₁+L₃With L_{Target 1}+L_{Target 3}Size relation, calculate the discharge quantity of Analytic Tower M₂, so that L₁+L₃=L_{Target 1}+L_{Target 3}, to obtain the blanking frequency f of the second baiting valve₂；Further according to L₁With L_{Target 1}Size relation, And L₃With L_{Target 3}Size relation, adjust the second conveying device to the feed time t of adsorption tower₁With third conveying device to parsing The feed time t of the second charging aperture of tower₂, so that L₁=L_{Target 1}, L₃=L_{Target 3}；Meanwhile working as L₂< L_{Target 2}When, it is defeated by supplement material Pipeline is sent to supplement new active carbon to the first charging aperture of Analytic Tower；Work as L₂> L_{Target 2}When, stop supplementing new work into Analytic Tower Property charcoal；Finally make L₂=L_{Target 2}。

In the inventive solutions, the operating of active carbon in each device is rationally controlled, so that entire fume treatment System is organic, normal operation.Specifically: first according to the ingredient and content of pollutant in former flue gas, calculate place in adsorption tower The amount of the active carbon of exhaust gas volumn needs is managed, the amount of active carbon as needed controls adsorption tower blow-off valve (the first blow-off valve) Frequency, enable the active carbon in adsorption tower timely and effectively to handle former flue gas；Then pollution has been adsorbed in adsorption tower The active carbon of object is transported to Analytic Tower and carries out dissection process, and the active carbon of absorption pollutant is all delivered to Analytic Tower First charging aperture, then carry out heating parsing；Heating parsing after fresh activity charcoal analytically tower discharge port discharge；From solution The active carbon of analysis tower discharge port discharge is divided into two parts, and a part is delivered to adsorption tower, the former flue gas of circulation absorption processing；Another portion Divide the second charging aperture for being delivered to Analytic Tower, subsequently into SRG gas dust-removing device, for SRG dedusting；According to absorption The material position situation below material position situation and Analytic Tower second charging aperture in tower calculates the work for needing analytically tower discharge port discharge Property charcoal amount, as needed analytically tower discharge port discharge active carbon amount, control Analytic Tower blow-off valve (the second blow-off valve) Frequency so that adsorption tower in and Analytic Tower second charging aperture below material position it is normal；Then it is fed further according to Analytic Tower first Material position situation below mouthful, supplements new active carbon, so that the material position below Analytic Tower first charging aperture is normal in real time.

Preferably, analytically the active carbon of tower discharge port discharge is sieved and then is divided into two by vibrating screen Point, a part is delivered to adsorption tower, and another part is delivered to the second charging aperture of Analytic Tower；Remove the dust in active carbon Grain improves effect and efficiency of the active carbon in adsorption tower and SRG gas dust-removing device.

Wherein, t₁It is the second conveying device to the feed time of adsorption tower, t₂For third conveying device to Analytic Tower second into The feed time of material mouth.That is, t₁And t₂Reflection is that the active carbon that analytically tower discharge port is discharged is delivered to adsorption tower and Analytic Tower The distribution condition of second charging aperture.As the practical material position L of the first level-sensing device in adsorption tower₁Less than target material position L_{Target 1}When, then on demand Extend the second conveying device to the feed time t of adsorption tower₁；As the practical material position L of the first level-sensing device in adsorption tower₁Greater than target Material position L_{Target 1}When, then shorten feed time t₁.The practical material position L of third level-sensing device below Analytic Tower second charging aperture₃It is less than Target material position L_{Target 3}When, then extend third conveying device on demand to the feed time t of Analytic Tower second charging aperture₂；When Analytic Tower The practical material position L of third level-sensing device below two feed inlets₃Greater than target material position L_{Target 3}When, then shorten feed time t₂；Finally make Obtain L₁=L_{Target 1}, L₃=L_{Target 3}, so that the material position in adsorption tower and below Analytic Tower second charging aperture is normal.Work as L₁=L_{Target 1}, L₃=L_{Target 3}When, t₁/t₂=d₁/d₂。d₁For the side immediately below the first charging aperture, parsing inner wall of tower and first partition (or the Two partitions) between width.d₂For the width of SRG gas dust-removing device, i.e. second partition (or first partition) goes out with SRG gas Width between mouthful.

In the present invention, the inlet end of the SRG gas dust-removing device (i.e. active carbon channel layer) or outlet side are respectively only It is on the spot shutter or perforated plate construction.That is, by former and later two shutters or perforated plate construction it Between distance define the thickness of active carbon channel layer, that is, define gas pass through active carbon channel layer linear distance.

It is hatch frame at the top and bottom of the active carbon channel layer in invention.Upper opening and bringing-up section connection, Under shed and cooling section connection.

In invention, the SRG gas collection device includes loading plate and multiple work for being connected in the bottom surface of loading plate Gap between property charcoal circulation passage.It is hatch frame at the top and bottom of active carbon circulation passage.Generally, active carbon circulates The cross section in channel is round or rectangle or triangle.For example, active carbon circulation passage is rendered as the form of vertical tube.

In invention, the length of active carbon circulation passage is 5-100cm, preferably 10-80cm, more preferably 15-60cm.

In invention, loading plate is equipped with multiple active carbon circulation passages, has gap between these active carbon circulation passages. Gap between active carbon circulation passage is SRG air ventilation passage.Collect or collect sulfur-rich gas in SRG air ventilation passage Body (SRG).

In invention, the cross-sectional area of active carbon channel layer is the 1-20% of SRG gas collection device cross-sectional area, preferably For 3-15%, more preferably 5-10%.

In invention, the bringing-up section is shell cylinder structure；Active carbon walks tube side, and heat gas walks shell side.

In invention, the cooling section is shell cylinder structure；Active carbon walks tube side, and cooling gas walks shell side.

In invention, the length of active carbon circulation passage is its length in vertical direction.

In invention, loading plate is equipped with multiple active carbon circulation passages, and the quantity of active carbon circulation passage is unrestricted, It requires to set according to actual production technique, generally according to the content etc. of pollutant in the size of Analytic Tower, analytic ability, active carbon Factor design.In general, the quantity of active carbon circulation passage is 50-700 in Analytic Tower, preferably 100-600, more have It is selected as 200-500.

In invention, the cross-sectional area of active carbon channel layer refers on the face of Analytic Tower transverse direction, the cross in active carbon channel Sectional area.Similarly, SRG gas collection device cross-sectional area refers on the face of Analytic Tower transverse direction, the cross of SRG gas collection device Sectional area.The cross-sectional area of active carbon channel layer and the size of SRG gas collection device cross-sectional area are unrestricted, according to reality Manufacturing technique requirent setting；Generally depending on the content of dust in SRG gas；If dust content is high in SRG gas, live Property charcoal channel layer cross-sectional area it is big (or its thickness is bigger)；On the contrary, active carbon is logical if dust content is low in SRG gas The cross-sectional area of channel layer is small (or its thickness is smaller).

In the present invention, the height of Analytic Tower is 15-80m, preferably 18-60m, more preferably 20-40m.SRG gas removes Width (the namely d of dirt device₂) it is 50-500mm, preferably 80-400mm, more preferably 100-300mm.

Compared with prior art, the present invention has following advantageous effects:

1, Analytic Tower of the invention adds a feed inlet on the basis of existing feed inlet, while in the charging added SRG gas dust-removing device, the mistake through the clean active carbon being sieving through after effective use parsing are set in the underface changeover portion of mouth Filter the dedusting that purification function realizes SRG gas；

2, Analytic Tower of the invention is equipped with first partition between first charging aperture and second charging aperture, first partition It is arranged right below second partition, the setting of partition is so that active carbon two stock streams of formation entered from different feed inlets, will load The active carbon of pollutant is separated with clean active carbon, does not on the one hand influence to be parsed from the active carbon that first charging aperture enters On the other hand regeneration will not generate fugitive dust or pollutant, dedusting from the active carbon that second charging aperture enters in dust removal process Better effect；

3, using flue gas purification system and flue gas purifying method of the invention, it can be realized the essence to system activity charcoal stream Really control, and then realize the purification of flue gas and the dedusting of SRG gas；

4, the SRG fuel gas and dust content being discharged by Analytic Tower of the present invention or flue gas purification system is few, alleviates sulfur-rich gas The load of body purification facility, ensure that SO₂The quality of resource utilization product.

Detailed description of the invention

Fig. 1 is the schematic diagram of activated carbon method flue gas purification system in the prior art；

Fig. 2 is the cross-sectional view of the position B-B in Fig. 1；

Fig. 3 is the structural schematic diagram of Analytic Tower in the present invention；

Fig. 4 is the structural schematic diagram of flue gas purification system in the present invention；

Fig. 5 is the cross-sectional view of the position C-C in Fig. 4.

Appended drawing reference: A: Analytic Tower；A01: first charging aperture；A02: second charging aperture；1: bringing-up section；2: changeover portion； 201:SRG gas vent；3: cooling section；4:SRG gas dust-removing device；5: first partition；6: second partition；7:SRG gas converges Acquisition means；701: loading plate；702: active carbon circulation passage；703:SRG air ventilation passage；8: adsorption tower；9: the first blankings Valve；10: the second baiting valves；11: the first level-sensing devices；12: the second level-sensing devices；13: third level-sensing device；14: vibrating screen；D1: the first Conveying device；D2: the second conveying device；D3: third conveying device；L: supplement material conveying tube road.

Specific embodiment

A kind of Analytic Tower, Analytic Tower A include bringing-up section 1, changeover portion 2, cooling section 3.Bringing-up section 1 is arranged in Analytic Tower A Top, cooling section 3 is arranged in the lower part of Analytic Tower A, and changeover portion 2 is arranged between bringing-up section 1 and cooling section 3.Changeover portion 2 Side wall is equipped with SRG gas vent 201.The top of Analytic Tower A is equipped with first charging aperture A01 and second charging aperture A02.Transition SRG gas dust-removing device 4 is arranged right below in section 2 and positioned at second charging aperture A02.SRG gas dust-removing device 4 is located at SRG The inside of gas vent 201, and SRG gas dust-removing device 4 and SRG gas vent 201 are closely arranged.

Preferably, being equipped with first partition 5 between first charging aperture A01 and second charging aperture A02.Under first partition 5 End is connect with the top of bringing-up section 1.

Preferably, the top side of SRG gas dust-removing device 4 be equipped with second partition 6, and second partition 6 setting with The opposite side of SRG gas vent 201.The upper end of second partition 6 is connect with the bottom of bringing-up section 1 and lower end is removed with SRG gas Dirt device 4 connects.

Preferably, first partition 5 and second partition 6 are arranged in parallel with the side where SRG gas vent 201, and The underface of first partition 5 is arranged in second partition 6.

In the present invention, the SRG gas dust-removing device 4 is active carbon channel layer.The top and bottom of active carbon channel layer Portion is hatch frame.

Preferably, the left and right sides of SRG gas dust-removing device 4 is respectively shutter or perforated plate construction.

In the present invention, SRG gas collection device 7 is equipped in changeover portion 2.SRG gas dust-removing device 4 is arranged in SRG gas Between body aggregating apparatus 7 and SRG gas vent 201.

Preferably, SRG gas collection device 7 includes loading plate 701 and the multiple work connected in 701 bottom surface of loading plate Property charcoal circulation passage 702.There are gap between each active carbon circulation passage 702, the gap is SRG air ventilation passage 703. The top and bottom of active carbon circulation passage 702 are hatch frame.The top of SRG air ventilation passage 703 is loading plate 701, bottom is hatch frame.

A kind of flue gas purification system, including above-mentioned Analytic Tower A.The flue gas purification system further includes that adsorption tower 8, first conveys Device D1, the second conveying device D2, third conveying device D3.First conveying device D1 connection adsorption tower 8 active carbon outlet with The active carbon of the active carbon outlet and adsorption tower 8 of the first charging aperture A01, the second conveying device D2 connection Analytic Tower A of Analytic Tower A Entrance, the second charging aperture A02 of the active carbon outlet and Analytic Tower A of third conveying device D3 connection Analytic Tower A.Adsorption tower 8 Bottom is equipped with the first baiting valve 9.The bottom of Analytic Tower A is equipped with the second baiting valve 10.The first charging aperture A01 of Analytic Tower A also with Supplement material conveying tube road L connection.

Preferably, the top of adsorption tower 8 is equipped with the first level-sensing device 11.The is equipped at the first charging aperture A01 of Analytic Tower A Two level-sensing devices 12.Third level-sensing device 13 is equipped at the second charging aperture A02 of Analytic Tower A.

Preferably, the lower part of the second baiting valve 10 is equipped with vibrating screen 14.

1) former flue gas is transported in adsorption tower 8 by the smoke inlet of activated carbon adsorber 8, the active carbon of adsorption tower 8 Adsorption treatment original flue gas, the pollutant in former flue gas are adsorbed the activated carbon adsorption in tower 8；Flue gas after treatment is from absorption The exhanst gas outlet of tower 8 is discharged；

2) active carbon that pollutant has been adsorbed in adsorption tower 8 is discharged by the first baiting valve 9 of 8 bottom of adsorption tower, so The first charging aperture A01 of Analytic Tower A is delivered to by the first conveying device D1 afterwards, has adsorbed the active carbon of pollutant in Analytic Tower By heating regeneration in A, it is discharged by the second baiting valve 10 of the bottom Analytic Tower A；

3) analytically the active carbon of tower A discharge is divided into two parts；A portion is delivered to by the second conveying device D2 The active carbon entrance of adsorption tower 8, the former flue gas of circulation absorption processing；Another part is delivered to Analytic Tower by third conveying device D3 The second charging aperture A02 of A, subsequently into SRG gas dust-removing device 4, which is used to remove the powder in SRG gas Dirt, the SRG gas that SRG gas collection device 7 collects is after 4 dedusting of SRG gas dust-removing device, from 201 row of SRG gas vent Out.

Preferably, step 2) further include: analytically the active carbon of tower A discharge is after the screening of vibrating screen 14, except deactivation Dust particles in property charcoal, are then delivered to the active carbon entrance of adsorption tower 8 by the second conveying device D2 again and pass through third Conveying device D3 is delivered to the second charging aperture A02 of Analytic Tower A.

In the present invention, this method further include: step 4) active carbon according to needed for handling former flue gas in adsorption tower 8 Treating capacity and the screening of vibrating screen 14 that active carbon is parsed in amount, Analytic Tower A remove the amount of active carbon dust, pass through supplement material conveying Analytically the first charging aperture A01 of tower A supplements new active carbon and enters Analytic Tower A pipeline L.

In the present invention, step 4) specifically:

A) the former flue gas entered in adsorption tower 8 is detected, and combines contaminant removal efficiency requirement, calculate adsorption tower The amount that the active carbon that former flue gas needs is handled in 8, obtains the discharge quantity M of adsorption tower 8₁；

B) according to the relationship of the frequency of the first baiting valve 9 and the discharge quantity of adsorption tower 8, the frequency of the first baiting valve 9 is adjusted For the discharge quantity M with adsorption tower 8₁Corresponding frequency f₁；

C) the target material position of the first level-sensing device 11 in adsorption tower 8 is set as L_{Target 1}Under the second charging aperture A02 of Analytic Tower A The target material position of square third level-sensing device 13 is L_{Target 3}, read the material position L of the first level-sensing device 11₁With the material position L of third level-sensing device 13₃, According to L₁+L₃With L_{Target 1}+L_{Target 3}Size relation, calculate Analytic Tower A discharge quantity M₂, so that L₁+L₃=L_{Target 1}+L_{Target 3}；

D) according to the relationship of the frequency of the second baiting valve 10 and the discharge quantity of Analytic Tower A, the frequency of the second baiting valve 10 is adjusted Rate is the discharge quantity M with Analytic Tower A₂Corresponding frequency f₂；

E) according to the material position L of the first level-sensing device 11₁With target material position L_{Target 1}Size relation and third level-sensing device 13 material Position L₃With target material position L_{Target 3}Size relation, adjust the second conveying device D2 to the feed time t of adsorption tower 8₁It is conveyed with third Feed time t of the device D3 to the second charging aperture A02 of Analytic Tower A₂, so that L₁=L_{Target 1}, L₃=L_{Target 3}；

F) the target material position of the second level-sensing device 12 below the first charging aperture A01 of Analytic Tower A is set as L_{Target 2}, read second The material position L of level-sensing device 12₂, work as L₂< L_{Target 2}When, it is supplemented by supplement material conveying tube road L to the first charging aperture A01 of Analytic Tower A New active carbon；Work as L₂> L_{Target 2}When, stop supplementing new active carbon into Analytic Tower A；Finally make L₂=L_{Target 2}。

In the present invention, the former flue gas entered in adsorption tower 8 is detected described in step a), is calculated in adsorption tower 8 The amount for handling the active carbon that former flue gas needs, obtains the discharge quantity M of adsorption tower 8₁, specifically:

1. calculating the SO that adsorption tower 8 need to be handled₂, NOx amount: the flow for detecting former flue gas is Q, titanium dioxide in former flue gas The concentration of sulphur isThe concentration of former nitrogen oxides in effluent is C_NOx, adsorption tower 8 need to be handled as a result, SO₂, NOx amount difference Are as follows:

W_NOx=η_NOx×Q×C_NOx/10⁶；………(2)

In formula (1),The SO that need to be handled for adsorption tower 8₂Amount, units/kg/h；Q is the flow of former flue gas, unit Nm³/ h；For SO in former flue gas₂Concentration, unit mg/Nm³；For SO₂Removal efficiency；In formula (2), W_NOxIt is needed for adsorption tower 8 The amount of the NOx of processing, units/kg/h；C_NOxFor the concentration of former nitrogen oxides in effluent, unit mg/Nm³；η_NOxFor the removal of NOx Efficiency；

2. basisAnd W_NOx, calculate the discharge quantity M of adsorption tower 8₁:

In formula (3), M₁For the discharge quantity of adsorption tower 8, units/kg/h；k₁For the first coefficient, k₁Value is 5-50, preferably 8- 40, more preferably 10-20；k₂For the second coefficient, k₂Value is 1-40, preferably 3-30, more preferably 5-20.

In the present invention, the frequency f of the second baiting valve 10 is adjusted described in step d)₂, specifically:

Work as L₁+L₃> L_{Target 1}+L_{Target 3}When, reduce the frequency f of the second baiting valve 10₂；Work as L₁+L₃< L_{Target 1}+L_{Target 3}When, increase The frequency f of second baiting valve 10₂, finally make L₁+L₃=L_{Target 1}+L_{Target 3}。

In the present invention, according to the material position L of the first level-sensing device 11 described in step e)₁With target material position L_{Target 1}Size close The material position L of system and third level-sensing device 13₃With target material position L_{Target 3}Size relation, adjust the second conveying device D2 to adsorption tower 8 Feed time t₁With third conveying device D3 to the feed time t of the second charging aperture A02 of Analytic Tower A₂, specifically:

As the material position L of the first level-sensing device 11₁=target material position L_{Target 1}, third level-sensing device 13 material position L₃=target material position L_{Target 3}When, t₁/t₂=d₁/d₂；Wherein, d₁For close to side immediately below first charging aperture A01, Analytic Tower A inner wall and first partition 5 Between width；d₂For the width of SRG gas dust-removing device 4, i.e. width between second partition 6 and SRG gas vent 201；

As the material position L of the first level-sensing device 11₁> target material position L_{Target 1}When, shorten the second conveying device D2 giving to adsorption tower 8 Expect time t₁；As the material position L of the first level-sensing device 11₁< target material position L_{Target 1}When, increase by the second conveying device D2 to adsorption tower 8 Feed time t₁；

As the material position L of third level-sensing device 13₃> target material position L_{Target 3}When, shorten third conveying device D3 to Analytic Tower A second The feed time t of feed inlet A02₂；As the material position L of third level-sensing device 13₃< target material position L_{Target 3}When, increase third conveying device Feed time t of the D3 to Analytic Tower A second charging aperture A02₂。

Embodiment 1

As shown in figure 3, a kind of Analytic Tower, Analytic Tower A includes bringing-up section 1, changeover portion 2, cooling section 3.Bringing-up section 1 is arranged On the top of Analytic Tower A, the lower part of Analytic Tower A is arranged in cooling section 3, and changeover portion 2 is arranged between bringing-up section 1 and cooling section 3. The side wall of changeover portion 2 is equipped with SRG gas vent 201.The top of Analytic Tower A is equipped with the charging of first charging aperture A01 and second Mouth A02.SRG gas dust-removing device 4 is arranged right below in changeover portion 2 and positioned at second charging aperture A02.SRG dedusting dress 4 insides for being located at SRG gas vent 201 are set, and SRG gas dust-removing device 4 and SRG gas vent 201 are closely arranged.

First partition 5 is equipped between first charging aperture A01 and second charging aperture A02.The lower end of first partition 5 and bringing-up section 1 top connection.The top side of SRG gas dust-removing device 4 be equipped with second partition 6, and second partition 6 setting with SRG gas Body exports 201 opposite sides.The upper end of second partition 6 is connect with the bottom of bringing-up section 1 and lower end and SRG gas dust-removing device 4 connections.First partition 5 and second partition 6 are arranged in parallel with the side where SRG gas vent 201, and second partition 6 is set It sets in the underface of first partition 5.

The SRG gas dust-removing device 4 is active carbon channel layer.It is opening knot at the top and bottom of active carbon channel layer Structure.The left and right sides of SRG gas dust-removing device 4 is respectively shutter.

SRG gas collection device 7 is equipped in changeover portion 2.SRG gas dust-removing device 4 is arranged in SRG gas collection device 7 Between SRG gas vent 201.SRG gas collection device 7 includes loading plate 701 and is connected in 701 bottom surface of loading plate more A active carbon circulation passage 702.There are gap between each active carbon circulation passage 702, the gap is SRG air ventilation passage 703.The top and bottom of active carbon circulation passage 702 are hatch frame.The top of SRG air ventilation passage 703 is carrying Plate 701, bottom are hatch frame.

Embodiment 2

As shown in figure 4, a kind of flue gas purification system, including the Analytic Tower A in embodiment 1.The flue gas purification system also wraps Include adsorption tower 8, the first conveying device D1, the second conveying device D2, third conveying device D3.First conveying device D1 connection absorption The active carbon outlet of tower 8 and the active carbon of the first charging aperture A01, the second conveying device D2 connection Analytic Tower A of Analytic Tower A export With the active carbon entrance of adsorption tower 8, the active carbon outlet of third conveying device D3 connection Analytic Tower A with the second of Analytic Tower A into Material mouth A02.The bottom of adsorption tower 8 is equipped with the first baiting valve 9.The bottom of Analytic Tower A is equipped with the second baiting valve 10.Analytic Tower A's First charging aperture A01 is also connect with supplement material conveying tube road L.

The top of adsorption tower 8 is equipped with the first level-sensing device 11.The second level-sensing device is equipped at the first charging aperture A01 of Analytic Tower A 12.Third level-sensing device 13 is equipped at the second charging aperture A02 of Analytic Tower A.The lower part of second baiting valve 10 is equipped with vibrating screen 14.

Embodiment 3

A kind of flue gas purifying method, using the flue gas purification system in embodiment 2, method includes the following steps:

Embodiment 4

Repeat embodiment 3, only step 2) further include: analytically the active carbon of tower A discharge after the screening of vibrating screen 14, The dust particles in active carbon are removed, the active carbon entrance of adsorption tower 8 is then delivered to by the second conveying device D2 again and are led to Cross the second charging aperture A02 that third conveying device D3 is delivered to Analytic Tower A.

Embodiment 5

Embodiment 4 is repeated, only this method further include: step 4) activity according to needed for handling former flue gas in adsorption tower 8 Treating capacity and the screening of vibrating screen 14 that active carbon is parsed in the amount of charcoal, Analytic Tower A remove the amount of active carbon dust, pass through supplement material Analytically the first charging aperture A01 of tower A supplements new active carbon and enters Analytic Tower A conveyance conduit L.

Step 4) specifically:

A) the former flue gas entered in adsorption tower 8 is detected, and combines contaminant removal efficiency requirement, calculate adsorption tower The amount that the active carbon that former flue gas needs is handled in 8, obtains the discharge quantity M of adsorption tower 8₁:

1. calculating the SO that adsorption tower 8 need to be handled₂, NOx amount: detect former flue gas flow be Q=10⁶Nm³/ h, former cigarette The concentration of sulfur dioxide is in gasThe concentration of former nitrogen oxides in effluent is C_NOx=300mg/Nm³, SO₂, NOx removal efficiency be respectively 95% and 85%, the SO that adsorption tower 8 need to be handled as a result,₂, NOx amount be respectively as follows:

W_NOx=η_NOx×Q×C_NOx/10⁶=255；………(2)

2. basisAnd W_NOx, calculate the discharge quantity M of adsorption tower 8₁:

In formula (3), M₁For the discharge quantity of adsorption tower 8, units/kg/h；k₁For the first coefficient, being worth is 15；k₂For the second coefficient, Value is 16.

B) according to the relationship of the frequency of the first baiting valve 9 and the discharge quantity of adsorption tower 8, the frequency of the first baiting valve 9 is adjusted For the discharge quantity M with adsorption tower 8₁Corresponding frequency f₁。

C) the target material position of the first level-sensing device 11 in adsorption tower 8 is set as L_{Target 1}For the second charging of 2.5m and Analytic Tower A The target material position of third level-sensing device 13 is L below mouth A02_{Target 3}For 2.5m, the material position L of the first level-sensing device 11 is read₁With third material position The material position L of meter 13₃, according to L₁+L₃With L_{Target 1}+L_{Target 3}Size relation, calculate Analytic Tower A discharge quantity M₂, so that L₁+L₃= L_{Target 1}+L_{Target 3}。

D) according to the relationship of the frequency of the second baiting valve 10 and the discharge quantity of Analytic Tower A, the frequency of the second baiting valve 10 is adjusted Rate is the discharge quantity M with Analytic Tower A₂Corresponding frequency f₂:

E) according to the material position L of the first level-sensing device 11₁With target material position L_{Target 1}Size relation and third level-sensing device 13 material Position L₃With target material position L_{Target 3}Size relation, adjust the second conveying device D2 to the feed time t of adsorption tower 8₁=300s and Feed time t of the three conveying device D3 to the second charging aperture A02 of Analytic Tower A₂=30s, so that L₁=L_{Target 1}, L₃=L_{Target 3}:

F) the target material position of the second level-sensing device 12 below the first charging aperture A01 of Analytic Tower A is set as L_{Target 2}For 2.5m, read Take the material position L of the second level-sensing device 12₂For 2.5m, work as L₂< L_{Target 2}When, by supplement material conveying tube road L to Analytic Tower A first into Material mouth A01 supplements new active carbon；Work as L₂> L_{Target 2}When, stop supplementing new active carbon into Analytic Tower A；Finally make L₂= L_{Target 2}。

Application Example 1

Parsing activation is carried out to the active carbon containing pollutant using the active carbon Analytic Tower that the embodiment of the present application 2 provides (or regeneration) processing, handles 600m²The flue gas that sintering machine generates passes through activated carbon adsorber treated the activity containing pollutant Charcoal, analytically in the SRG gas of tower SRG gas outlet discharge, dust content is lower than 0.5g/m³。

Application Example 2

The active carbon containing pollutant is carried out using the active carbon Analytic Tower provided application No. is CN201720876280 Parsing activation (or regeneration) processing, handles 600m²Treated containing pollution by activated carbon adsorber for the flue gas that sintering machine generates The active carbon of object, analytically in the SRG gas of tower SRG gas outlet discharge, dust content 1.5g/m³。

Claims

1. a kind of Analytic Tower, which includes bringing-up section (1), changeover portion (2), cooling section (3)；Bringing-up section (1) setting exists The top of Analytic Tower (A), cooling section (3) setting is in the lower part of Analytic Tower (A), and changeover portion (2) setting is in bringing-up section (1) and cooling Between section (3)；The side wall of changeover portion (2) is equipped with SRG gas vent (201)；It is characterized by: the top of the Analytic Tower (A) Equipped with first charging aperture (A01) and second charging aperture (A02)；Underface in changeover portion (2) and positioned at second charging aperture (A02) Equipped with SRG gas dust-removing device (4)；SRG gas dust-removing device (4) is located at the inside of SRG gas vent (201), and SRG gas Dust-extraction unit (4) and SRG gas vent (201) are closely arranged.

2. Analytic Tower according to claim 1, it is characterised in that: first charging aperture (A01) and second charging aperture (A02) it Between be equipped with first partition (5)；The lower end of first partition (5) is connect with the top of bringing-up section (1)；And/or

The top side of SRG gas dust-removing device (4) be equipped with second partition (6), and second partition (6) setting with SRG gas Export (201) opposite side；The upper end of second partition (6) is connect with the bottom of bringing-up section (1) and lower end and SRG dedusting Device (4) connection；

Preferably, first partition (5) and second partition (6) are arranged in parallel with the side where SRG gas vent (201), And second partition (6) setting is in the underface of first partition (5).

3. Analytic Tower according to claim 1 or 2, it is characterised in that: the SRG gas dust-removing device (4) is active carbon Channel layer；It is hatch frame at the top and bottom of active carbon channel layer；

Preferably, the left and right sides of SRG gas dust-removing device (4) is respectively shutter or perforated plate construction.

4. Analytic Tower according to any one of claim 1-3, it is characterised in that: be equipped with SRG gas in changeover portion (2) and converge Acquisition means (7)；SRG gas dust-removing device (4) is arranged between SRG gas collection device (7) and SRG gas vent (201)；

Preferably, SRG gas collection device (7) includes loading plate (701) and is connected in loading plate (701) bottom surface multiple Active carbon circulation passage (702)；There are gap between each active carbon circulation passage (702), the gap is that the circulation of SRG gas is logical Road (703)；Active carbon circulation passage is hatch frame at the top and bottom of (702)；The top of SRG air ventilation passage (703) Portion is loading plate (701), and bottom is hatch frame.

5. a kind of flue gas purification system, including Analytic Tower of any of claims 1-4 (A), the flue gas purification system It further include adsorption tower (8), the first conveying device (D1), the second conveying device (D2), third conveying device (D3)；First conveying dress Set the first charging aperture (A01) of the active carbon outlet and Analytic Tower (A) of (D1) connection adsorption tower (8), the second conveying device (D2) The active carbon entrance of the active carbon outlet and adsorption tower (8) of Analytic Tower (A) is connected, third conveying device (D3) connects Analytic Tower (A) second charging aperture (A02) of active carbon outlet and Analytic Tower (A)；The bottom of adsorption tower (8) is equipped with the first baiting valve (9)； The bottom of Analytic Tower (A) is equipped with the second baiting valve (10)；The first charging aperture (A01) of Analytic Tower (A) also with supplement material conveying tube Road (L) connection.

6. flue gas purification system according to claim 5, it is characterised in that: the top of adsorption tower (8) is equipped with the first material position It counts (11)；The second level-sensing device (12) are equipped at the first charging aperture (A01) of Analytic Tower (A)；The second charging aperture of Analytic Tower (A) (A02) third level-sensing device (13) are equipped at；

Preferably, the lower part of the second baiting valve (10) is equipped with vibrating screen (14).

7. a kind of flue gas purifying method or the method for carrying out purifying smoke using flue gas purification system described in claim 5 or 6, should Method the following steps are included:

1) former flue gas is transported in adsorption tower (8) by the smoke inlet of activated carbon adsorber (8), the activity of adsorption tower (8) Charcoal adsorption treatment original flue gas, the pollutant in former flue gas are adsorbed the activated carbon adsorption in tower (8)；Flue gas after treatment from The exhanst gas outlet of adsorption tower (8) is discharged；

2) active carbon that pollutant has been adsorbed in adsorption tower (8) is discharged by first baiting valve (9) of adsorption tower (8) bottom, Then it is delivered to the first charging aperture (A01) of Analytic Tower (A) by the first conveying device (D1), has adsorbed the active carbon of pollutant By heating regeneration in Analytic Tower (A), it is discharged by second baiting valve (10) of the bottom Analytic Tower (A)；

3) analytically the active carbon of tower (A) discharge is divided into two parts；A portion is delivered to by the second conveying device (D2) The active carbon entrance of adsorption tower (8), the former flue gas of circulation absorption processing；Another part is delivered to solution by third conveying device (D3) The second charging aperture (A02) for analysing tower (A), subsequently into SRG gas dust-removing device (4), the amount of activated charcoal is for removing SRG gas Dust in body, the SRG gas that SRG gas collection device (7) collects is after SRG gas dust-removing device (4) dedusting, from SRG Gas vent (201) discharge.

8. flue gas purifying method according to claim 7, it is characterised in that: step 2) further include: analytically tower (A) is discharged Active carbon by vibrating screen (14) screening after, remove active carbon in dust particles, then again pass through the second conveying device (D2) be delivered to adsorption tower (8) active carbon entrance and by third conveying device (D3) be delivered to the second of Analytic Tower (A) into Material mouth (A02).

9. flue gas purifying method according to claim 8, it is characterised in that: this method further include: step 4) is according to absorption The treating capacity and vibrating screen (14) sieve of the middle parsing active carbon of the amount of active carbon needed for handling former flue gas in tower (8), Analytic Tower (A) The amount for point removing active carbon dust is supplemented new by the first charging aperture (A01) of supplement material conveying tube road (L) analytically tower (A) Active carbon enter Analytic Tower (A).

10. flue gas purifying method according to claim 9, it is characterised in that: step 4) specifically:

A) the former flue gas entered in adsorption tower (8) is detected, and combines contaminant removal efficiency requirement, calculate adsorption tower (8) amount that the active carbon that former flue gas needs is handled in, obtains the discharge quantity M of adsorption tower (8)₁；

B) according to the relationship of the frequency of the first baiting valve (9) and the discharge quantity of adsorption tower (8), the frequency of the first baiting valve (9) is adjusted Rate is the discharge quantity M with adsorption tower (8)₁Corresponding frequency f₁；

C) the target material position of the first level-sensing device (11) in adsorption tower (8) is set as L_{Target 1}With the second charging aperture of Analytic Tower (A) (A02) the target material position of lower section third level-sensing device (13) is L_{Target 3}, read the material position L of the first level-sensing device (11)₁With third level-sensing device (13) material position L₃, according to L₁+L₃With L_{Target 1}+L_{Target 3}Size relation, calculate Analytic Tower (A) discharge quantity M₂, so that L₁+L₃= L_{Target 1}+L_{Target 3}；

D) according to the relationship of the frequency of the second baiting valve (10) and the discharge quantity of Analytic Tower (A), the second baiting valve (10) are adjusted Frequency is the discharge quantity M with Analytic Tower (A)₂Corresponding frequency f₂；

E) according to the material position L of the first level-sensing device (11)₁With target material position L_{Target 1}Size relation and third level-sensing device (13) material Position L₃With target material position L_{Target 3}Size relation, adjust the second conveying device (D2) to the feed time t of adsorption tower (8)₁And third Feed time t of the conveying device (D3) to the second charging aperture (A02) of Analytic Tower (A)₂, so that L₁=L_{Target 1}, L₃=L_{Target 3}；

F) the target material position of the second level-sensing device (12) below the first charging aperture (A01) of Analytic Tower (A) is set as L_{Target 2}, read the The material position L of two level-sensing devices (12)₂, work as L₂< L_{Target 2}When, by supplementing the first charging aperture of material conveying tube road (L) to Analytic Tower (A) (A01) new active carbon is supplemented；Work as L₂> L_{Target 2}When, stop the active carbon that supplement is new into Analytic Tower (A)；Finally make L₂= L_{Target 2}。

11. flue gas purifying method according to claim 10, it is characterised in that: described in step a) to enter adsorption tower (8) the former flue gas in is detected, and is calculated the amount for handling the active carbon that former flue gas needs in adsorption tower (8), is obtained adsorption tower (8) Discharge quantity M₁, specifically:

1. calculating the SO that adsorption tower (8) need to be handled₂, NOx amount: the flow for detecting former flue gas is Q, former sulfur dioxide in flue gas Concentration beThe concentration of former nitrogen oxides in effluent is C_NOx, adsorption tower (8) need to be handled as a result, SO₂, NOx amount difference Are as follows:

W_NOx=η_NOx×Q×C_NOx/10⁶；………(2)

In formula (1),The SO that need to be handled for adsorption tower (8)₂Amount, units/kg/h；Q is the flow of former flue gas, unit Nm³/h；For SO in former flue gas₂Concentration, unit mg/Nm³；η_SO2For SO₂Removal efficiency；In formula (2), W_NOxIt is needed for adsorption tower (8) The amount of the NOx of processing, units/kg/h；C_NOxFor the concentration of former nitrogen oxides in effluent, unit mg/Nm³；η_NOxFor the removal of NOx Efficiency；

2. basisAnd W_NOx, calculate the discharge quantity M of adsorption tower (8)₁:

In formula (3), M₁For the discharge quantity of adsorption tower (8), units/kg/h；k₁For the first coefficient, k₁Value be 5-50, preferably 8-40, More preferably 10-20；k₂For the second coefficient, k₂Value is 1-40, preferably 3-30, more preferably 5-20.

12. flue gas purifying method described in 0 or 11 according to claim 1, it is characterised in that: the first baiting valve described in step b) (9) frequency f₁With the discharge quantity M of adsorption tower (8)₁Relationship specifically: M₁=f₁×k₃×l₁×d_{Between 1}×ρ₁/r₁×d_{1 is straight}, In: k₃Third coefficient, l₁For the length of the first baiting valve round roller, d_{Between 1}For the gap of the first baiting valve round roller, ρ₁For in adsorption tower Active carbon heap density, r₁For the round roller maximum (top) speed of the first baiting valve round roller, d_{1 is straight}For the diameter of the first baiting valve round roller；k₃Value is 0.01-0.2, preferably 0.03-0.15, more preferably 0.05-0.1；And/or

The frequency f of second baiting valve (10) described in step d)₂With the discharge quantity M of Analytic Tower (A)₂Relationship specifically: M₂=f₂ ×k₄×l₂×d_{Between 2}×ρ₂/r₂×d_{2 is straight}, in which: k₄4th coefficient, l₂For the length of the second baiting valve round roller, d_{Between 2}For the second blanking The gap of valve circle roller, ρ₂For active carbon heap density, r in Analytic Tower₂For the round roller maximum (top) speed of the second baiting valve round roller, d_{2 is straight}It is The diameter of two baiting valve round rollers；k₄Value is 0.01-0.2, preferably 0.03-0.15, more preferably 0.05-0.1.

13. flue gas purifying method described in any one of 0-12 according to claim 1, it is characterised in that: adjusted described in step d) Save the frequency f of the second baiting valve (10)₂, specifically:

Work as L₁+L₃> L_{Target 1}+L_{Target 3}When, reduce the frequency f of the second baiting valve (10)₂；Work as L₁+L₃< L_{Target 1}+L_{Target 3}When, increase the The frequency f of two baiting valves (10)₂, finally make L₁+L₃=L_{Target 1}+L_{Target 3}。

14. control method described in any one of 0-13 according to claim 1, it is characterised in that: according to described in step e) The material position L of one level-sensing device (11)₁With target material position L_{Target 1}Size relation and third level-sensing device (13) material position L₃With target material Position L_{Target 3}Size relation, adjust the second conveying device (D2) to the feed time t of adsorption tower (8)₁With third conveying device (D3) To the feed time t of the second charging aperture (A02) of Analytic Tower (A)₂, specifically:

As the material position L of the first level-sensing device (11)₁=target material position L_{Target 1}, third level-sensing device (13) material position L₃=target material position L_{Target 3} When, t₁/t₂=d₁/d₂；Wherein, d₁For close to side immediately below first charging aperture (A01), Analytic Tower (A) inner wall and first partition (5) width between；d₂For the width of SRG gas dust-removing device (4), i.e., second partition (6) and SRG gas vent (201) it Between width；

As the material position L of the first level-sensing device (11)₁> target material position L_{Target 1}When, shorten the second conveying device (D2) to adsorption tower (8) Feed time t₁；As the material position L of the first level-sensing device (11)₁< target material position L_{Target 1}When, increase the second conveying device (D2) to absorption The feed time t of tower (8)₁；

As the material position L of third level-sensing device (13)₃> target material position L_{Target 3}When, shorten third conveying device (D3) to Analytic Tower (A) the The feed time t of two feed inlets (A02)₂；As the material position L of third level-sensing device (13)₃< target material position L_{Target 3}When, it is defeated to increase third Send device (D3) to the feed time t of Analytic Tower (A) second charging aperture (A02)₂。