CN105879681B - Energy-efficient SCR denitration regeneration disposing technique and device - Google Patents

Abstract

The present invention proposes and devises the technique and device of a whole set of factory disposition SCR denitration regeneration disposition, including since SCR catalyst module is transported to factory, each step process of practical operation is carried out, detection carries, cleaning flying dust, washing, pickling, rinsing, air-dries, activates, drying, being fired to finished product packing；According to the technical process of each step process and processing time, rationalize advancing equipment, reduce handling time and link, the rational utilization time, improves production efficiency；Rational Design on Plane has been carried out to each processing groove body, has been configured with control equipment, using PLC control system, processing groove body is automatically brought into operation, semiautomatic control is realized to entire disposing technique, further increases efficiency and disposing capacity；By the used water of some techniques, carries out precipitating filtering and recycle, saved cost and resource；The calcining of module and drying are effectively combined together, using the residual heat drying module of calcining, effectively saved the energy.

Description

Energy-efficient SCR denitration regeneration disposing technique and device

Technical field

The present invention relates to the regenerated engineering technology of large coal-fired boiler denitrating catalyst and equipment to manufacture and design field, specifically It is related to the regeneration technology and regenerating unit of a kind of vanadium titanium-based selective catalytic reduction (SCR) denitrating catalyst.For in work In factory's regenerative process, the regeneration efficiency for improving denitrating catalyst is realized, guaranteeing reproduction quality and improving regenerating unit efficiency Meanwhile the energy and resource are saved.

Background technique

With China's rapid development of economy, the increasingly raising of living standards of the people, people get over the problem of environmental protection More to pay attention to；The Chinese government is also increasingly stringenter environmental protection requirement, " the thermal power plant's Air Pollutant Emission mark newly implemented It is quasi- ", it is desirable that power plant is less than 100mg/m3 to the discharge amount of nitrogen oxides, therefore every unit must carry out at denitration flue gas Reason.Denitration technology most widely used and mature at present is selective catalysis (SCR) denitration technology, wherein using being preferably at most vanadium titanium Based denitration catalyst, in entire denitrating system equipment, it is maximum that the core component of catalyst accounts for equipment investment ratio, and equipment exists After running a period of time, due to the pollution of flue gas neutral and alkali metal and arsenic；Adherency, blocking, the erosion of coal ash after burning；It is mechanical Abrasion and damage make catalyst lose original characteristic, and after operation 1 year, denitration effect is just not achieved general catalyst Design and national requirements, while serious problem is also brought to power unit in economic operation, denitrating catalyst must be located at this time Reason, raw catelyst is more expensive, heavy financial burden is brought to power plant, and contain heavy metal in catalyst, changed Catalyst element mismanagement is likely to cause secondary pollution, therefore produces the regenerated emerging industry of SCR denitration, by The only catalyst element that can be used 10 years or more, and fail in the mechanical structure of SCR denitration module, as long as will lose The catalyst reduction of effect, so that it may reuse, and the price of regenerated catalyst is giving power plant well below the price of raw catelyst While bringing economical and practical, the possibility of secondary pollution is also reduced and reduced.

SCR denitration regeneration technology device at present, mainly progress compressed air purging, cleaning, activation and drying Equal process procedures complete the regeneration of catalyst, and the time is long in regenerative process, low efficiency, and waste is serious, again may in production process Cause secondary pollution.

Summary of the invention

SCR denitration regeneration technology process disposition line is devised to present system, regenerating treater is carried out Rational Design on Plane has carried out every equipment to rationalize arrangement, in process flow water and heat carried out rationalization It utilizes, the energy and cost is also saved while improving efficiency.

Present invention employs highly efficient regeneration disposing technique processes, it is characterised in that: by a set of regeneration disposing technique process, and It equipment arrangement with matching, the control for the treatment of trough combination, full automatic treatment slot and semi-automatic disposition line traffic control and follows Ring is formed using system, and the regeneration disposing technique process is as follows: by the artificial sample to a batch module to be processed, being determined When the formula and activation time of activating solution, the formula of pickling solution and pickling time, the liquid feeding liquid level of each groove body, ultrasonic cleaning Between, the pressure pulse cleaning time, then successively carry out flying dust cleaning, washing deashing, pickling, rinsing, air-dry, activation, air-dry, it is dry with Calcining, finished product packing, wherein the setting of time is completed by the variable time-setting relay of control system；The equipment arrangement Feature is as follows: by flying dust dust-extraction unit, tipper, all treatment trough, that is, rinsing bowls, descaling bath, potcher, air-dried slot, activation Slot, drying are moved on the straight line position that trolley is mounted in workshop with calcination system, by loading at an upper portion thereof electronic Cucurbit links together；The treatment trough combination is as follows: preparing four activated baths in a disposition line, wraps in rinsing bowl Ultrasonic unit, bubbling cleaning device, auto-flushing and automatic air-drying device are included, each treatment trough configures dredge pump；It is described The control of full automatic treatment slot and semi-automatic disposition line traffic control are as follows: automatic control device is arranged in each groove body, according in advance The time of setting and relevant monitoring device realize automation control with PLC system；Whole disposition line realizes semi-automatic control System, lifting and unloading module carry out under manual intervention, after each slot automatically execution processing, can issue sound-light alarm prompt behaviour Make personnel；The cyclic utilization system is as follows: water circulation aspect, the water of rinsing bowl, potcher and automatic spray used Afterwards, sedimentation basin is discharged by dredge pump, after natural sedimentation and filtering, circulation is used to wash module, and energy circulation aspect will Drying is combined together with calcining, utilizes the residual heat drying module of calcining module.

The rinsing bowl is integrated with ultrasonic cleaning, pressure pulse cleaning, automatic spray cleaning, automatic air-drying, automatically adds water, certainly Dynamic blowdown and automatic rinsing tank body function；The device of the ultrasonic cleaning is as follows: surrounding and bottom installation ultrasound in groove body Wave oscillator group, surrounding divide three levels to install oscillator group, and six groups of ultrasonic oscillator groups are installed in bottom, while being measured using liquidometer Signal, design low liquid level protection；The bubbling cleaning device is as follows: bubbling pipe uses 316L stainless steel tube, opens on bubbling pipe There are 12 ventholes, by root to distally gradually amplifying, keeps each venthole gas output on every root canal uniform, bubbling pipe peace Mounted in groove body bottom, Open Side Down prevents the coal ash for washing from being blocked, and each groove body installs 14 bubbling pipes, parallel It arranges, a valve is installed on every bubbling pipe, for adjusting the air inflow of 14 root canals, inlet tube sectional area is greater than outlet Twice；The automatic spray cleaning and automatic air-drying use integrated design；The device automatically added water includes that magnetic turns over Plate liquidometer and motor-operated control valve；The device of the automatic pollution discharge includes dredge pump, motor-operated control valve, magnetic double level gauge；Institute The automatic rinsing tank body stated is by starting automatic spraying device, to clean used groove body automatically at the end of blowdown is incited somebody to action.

The drying and it is calcined through drying and calcining all-in-one oven is realized, the drying is with calcining all-in-one oven by main body kiln Furnace, transportation system, heating system, dehumidification system, five part of control system composition, main body kiln use Whole fiber lightweight modules group Detachable structure is filled, kiln body is tunnel structure, is furnished with kiln car in tunnel, module is mounted on kiln car, is hydraulically operated dress It sets driving kiln car to walk in kiln body tunnel, it is thus achieved that drying, heating, calcining, cooling, entire technical process is by PLC reality Existing Automatic Control, and using the waste heat of the subsequent cooling of kiln technique, dry just activated module.

Pass through the artificial sample to a batch module to be processed, it is determined that the formula and activation time of activating solution, pickling solution Formula and pickling time, the liquid feeding liquid level of each groove body, ultrasonic cleaning time, pressure pulse cleaning time etc., for the automation of lower step Operation provides foundation, and the setting of time is completed on the variable time-setting relay by control system.

(1) highly efficient regeneration disposing technique process.Pass through the artificial sample to a batch module to be processed, it is determined that activating solution Formula and activation time, the formula of pickling solution and pickling time, the ultrasonic cleaning time, are bubbled the liquid feeding liquid level of each groove body Scavenging period etc. provides foundation for lower step automatic operation, and the setting of time is the variable time-setting relay by control system Upper completion.

(2) rationally efficient equipment is arranged.By dust-extraction unit, tippler, all treatment troughs, drying/calcination system fortune It carries trolley to be mounted on the straight line position in workshop, effectively be connected together by the electric block for loading at an upper portion thereof, this Sample reduces the transport distance and haulage equipment of module, also improves efficiency while having saved cost；It is required according to technique, Perhaps multifunctional combination also saves cost of investment in a slot while improving efficiency；It is opposite according to activation time in technique Longer problem has prepared four activated baths in one disposition line, substantially increases the efficiency of disposition line in this way.

(3) rationally efficient treatment trough combination.It include ultrasonic unit, bubbling cleaning device, automatic punching in rinsing bowl Wash with automatic air-drying device, its function is effectively combined together, efficiency is greatly improved, reduces equipment, save Cost；Each slot is configured with dredge pump, while used solution can promptly be discharged, also provides for automation control Executive means.

(4) control of full automatic treatment slot and semi-automatic disposition line traffic control.Each groove body realizes automation control, foundation The time being previously set and relevant monitoring device, realize automation control with PLC system；Whole disposition line realizes half certainly Dynamicization control, due to lifting and unloading module is carried out under manual intervention, after each slot automatically execution processing, can issue sound Light warning note operator.

(5) recycling for cost-saving is saved in energy conservation.The water of rinsing bowl, potcher and automatic spray after use, passes through Dredge pump is discharged into sedimentation basin, and after natural sedimentation and filtering, circulation is used to wash module, rationally utilizes resource, effectively save Cost；Disposition line will dry and calcining is effectively bonded together, and using the residual heat drying module of calcining module, rationalizes land productivity With the energy and the energy is saved.

The present invention uses the multi-functional preparation of rinsing bowl.Invention devises multifunctional water washing trough in disposition line, this groove body is real Ultrasonic cleaning is showed, pressure pulse cleaning, automatic spray cleaning, automatic air-drying, has automatically added water, automatic pollution discharge and automatic rinsing tank body Etc. functions.

(1) ultrasonic cleaning.Ultrasonic oscillator group is installed in surrounding and bottom in groove body, and surrounding divides three levels to install oscillator Six groups of ultrasonic oscillator groups are installed in group, bottom, and ultrasonic power is in 30~70KW, and frequency is in 25~30KHz；According to the big of module Small, every layer of oscillator group can be worked independently or be worked at the same time, while utilize liquid level accelerometer measurement signals, devise low liquid level guarantor Shield prevents maloperation from damaging ultrasonic equipment.

(2) pressure pulse cleaning.Unique bubbling pipe design.It is bubbled the 316L stainless steel tube of effective DN15, is provided on bubbling pipe 12 0.5~1.5 ventholes of φ keep each venthole gas output on every root canal uniform by root to distally gradually amplifying.Drum Bubble pipe is mounted on groove body bottom, and Open Side Down prevents the coal ash for washing from being blocked.Each groove body installs 14 bubbling pipes, It is arranged in parallel, it is to have 12 catalyst elements according in general each module, even if lifting not timing, also can effectively evenly clean Module；On every bubbling pipe install a valve, for adjusting the air inflow of 14 root canals, enable its 14 bubbling pipes uniformly into Gas bell；14 pipe bubbling pipes are connected on the pipe of a DN50, and among 14 root canals, air inlet pipe is also the inlet port of DN50 DN50 installs solenoid valve above, controls the start and stop of bubbling；The design principle of bubbling pipe is that inlet tube sectional area is greater than outlet Twice of (hole).

(3) automatic spray/air-dry.It is by intelligent electric actuating mechanism, worm and gear and chain, stainless steel tube and more Mouth spray head, non-return valve, solenoid valve, connection hose composition.Intelligent electric actuating mechanism is the power drive unit of its automatic spray, Sector gear is installed, sector gear is engaged with sector gear in a fixing axle, and band moving axis rotates, axis two on its output shaft End is equipped with circular gear, and circular gear is engaged with chain, and one section of axis fixing groove, the other end also fixes identical axis, two chains Item connects together circular gear on two axis and axis, and a DN25 stainless steel tube is fixed on chain, installs 5 sprays of speaking out of turn on pipe Head, pipe both ends are equipped with non-return valve and solenoid valve, one section of pipe pressure hose water receiving pipe, and it is empty that the other end with pressure hose connects compression Gas, hydraulic pressure and compressed air pressure, by the movement of motor and solenoid valve, realize automatic water punching between 0.4~0.7MPa It washes and is air-dried with compressed air.Using intelligent electric actuating mechanism, stroke and the automatic control of setting pipe can be convenient；Automatically Spray and automatic air-drying integrated design, effectively save cost and improve efficiency.

(4) it automatically adds water.Equipped with magnetic double level gauge and motor-operated control valve, according to the volume automatic liquid-feeding of module to setting Liquid level.

(5) automatic pollution discharge.Using dredge pump, motor-operated control valve, magnetic double level gauge, automatic pollution discharge, the row of accelerating are carried out Dirty speed, improves efficiency.

(6) automatic rinsing tank body.Using automatic spraying device, blowdown will at the end of, start spray equipment, come automatic clear Used groove body is washed, the time has been saved, improves efficiency.

The present invention using can configuration in any combination drying/calcining all-in-one oven.Drying calcining furnace all-in-one oven is by main body Structure, transportation system, heating system, dehumidification system, five part of control system composition, main body kiln use Whole fiber lightweight modules Detachable structure is assembled, kiln principal length can be added and subtracted according to production technology and production capacity requirement in this way；Kiln body is tunnel Road formula structure is furnished with kiln car in tunnel, and module is mounted on kiln car, is hydraulically operated device driving kiln car in kiln body tunnel expert Walk, it is thus achieved that dry, heat up, calcining, cool down entire technical process, entire technique realizes Automatic Control by PLC, and Equipped with man-machine dialog interface, convenient for real-time monitoring and artificial in due course intervention.

(1) efficient energy-saving drying calcines integrated kiln.Kiln assembles Detachable structure using Whole fiber lightweight modules, Kiln room length can be increased and decreased according to the requirement of production capacity, achieve the purpose that change production capacity；Each kiln module uses The control system individually controlled can require setting operating mode and operating temperature according to technique；Using tunnel type kiln body, match in kiln There is tunnel vehicle, car body is hydraulically operated device driving, realizes the continuous operation and automatic control of entire technique；Whole system is adopted With PLC automatic control system, realizing the temperature field in entire tunnel can arbitrarily set, adjusts and automatically control, and improve effect It ensure that product quality while rate；Provided with man-machine dialog interface, operation conditions and in due course people in furnace can be monitored in real time Work intervention.

(2) energy conservation and environmental protection.Using the waste heat of the subsequent cooling of kiln technique, just activated module is dried, is effectively saved The energy；Environmental protection treatment has been carried out to drying and issuable pernicious gas in calcination process, has accomplished CR production.

It is set compared with prior art, the invention has the following advantages that the present invention rationalize to regenerating treater Meter has carried out every equipment to rationalize arrangement, for the utilization that the water in process flow is rationalized with heat, is improving The energy and cost are also saved while efficiency.Highly efficient regeneration disposing technique process, rationally efficient equipment arrangement, rationally efficient Treatment trough combination, provide executive means, energy-saving cost-saving for automation control；Using the multi-functional preparation of rinsing bowl, Efficiency is improved while effectively save cost；Using can configuration in any combination drying/calcining all-in-one oven, realize baking Do, heat up, calcining, cool down entire technical process, entire technique realizes Automatic Control by PLC, and is furnished with human-computer dialogue circle Face convenient for real-time monitoring and artificial in due course intervention, and carries out drying and issuable pernicious gas in calcination process Environmental protection treatment has accomplished CR production.

Detailed description of the invention:

Fig. 1 is the regeneration disposing technique flow diagram of the specific embodiment of the invention.

Fig. 2 is the regeneration device context mounting arrangements schematic diagram of the specific embodiment of the invention.

Fig. 3 is the water rinse bath schematic diagram of the specific embodiment of the invention.

Fig. 4 is drying/calcining all-in-one oven diagrammatic cross-section of the specific embodiment of the invention.

Specific embodiment

The present invention is described in further details below with reference to embodiment.

Present invention employs highly efficient regeneration disposing technique processes to be determined by the artificial sample to a batch module to be processed Liquid feeding liquid level, the ultrasonic cleaning of the formula and activation time of activating solution, the formula of pickling solution and pickling time, each groove body Time, pressure pulse cleaning time etc. provide foundation for lower step automatic operation, the setting of time be by control system can timing Between complete on relay.

Concrete technology flow process is referring to Fig. 1.Wherein, manual sampling is analyzed: every batch of (is per the used module of next power plant A batch) regeneration module to be handled first has to manual sampling, the main matter of its pollution of artificial detection, pollution level, to determine The preparation composition and ratio of activating solution, acid solution composition and concentration, ultrasonic cleaning time, be bubbled the time, ultrasound is bubbled mixed running Time；According to the size of module, the fluid injection height of rinse bath, descaling bath and activated bath is determined, while setting on the time relay Fixed ultrasound is bubbled time and activation time etc..

Flying dust cleaning: flying dust cleaning is exactly in the closed processes room of cloth envelop collector, and removing is adhered to denitrating catalyst Coal ash in module；The coal ash blocked in catalyst element hole is removed using purging rifle and dedicated through-hole tool.

Washing deashing: exactly using being mounted on ultrasonic unit in rinse bath, bubbling device, the automatic spray outside rinse bath Blow device removes element surface and internal coal ash.

Pickling: according to the polluter and pollution level of every batch of SCR denitration, prepare corresponding various concentration with not Congener acid solution reaches the purpose of removal alkalinous metal pollution.Acid solution may have sulfuric acid, oxalic acid, citric acid or (NH4) One of 2S04 is several.Recycling bubbling device that it is made sufficiently to react and remove again may remain in element Coal ash.

Rinsing: being further to clean the module of pickling deionized water and bubbling device, member may be adhered to by removing Coal ash on part, and wash off may because on adhesion elements pickling fall alkaline matter.

It air-dries: rinsed module being put into air-drying box, blows module off using the automatic blowout device being mounted on cabinet Upper liquid and the coal ash that may be adhered to.

Activation: being placed on air-dried rear mold part in activated bath and activated, and activating solution main component is ammonium metavanadate, metatungstic acid Several or multiple combinations in ammonium, sulfuric acid, oxalic acid, dimethyl sulfoxide, ammonium molybdate, bleeding agent and some other chemicals, Its each ingredient and ratio are to come particular formulation, activating solution temperature control according to the polluter and pollution level of its every batch of module System at 60 DEG C, activation time also according to every batch of module the case where depending on, general control is in 2~3 hours.

It air-dries: the module after activation is called in again in air-dried pond, the viscous activating solution for staying in element is blown off, to prevent its liquid Drying equipment is corroded.

Dry and calcining: dry with calcining is integrated equipment, it be between be mounted with track, with trolley automatically walk, into It has gone dry and has calcined.

Finished product packing: calcined module, through supercooling and after the assay was approved, so that it may carry out packing and storing or transport.

It carries out on-site equipment mounting arrangements: reasonably arranging and arrange that every procedure and every equipment are to provide disposition line The key of efficiency.Device context mounting arrangements schematic diagram is regenerated referring to fig. 2, including following equipment: flying dust dust-extraction unit (1), fork Vehicle (2), tipper (3), rinsing bowl (4), descaling bath (5), potcher (6) air-dry slot (7), activated bath (8), activated bath (9), Activated bath (10), activated bath (11), electric block (12), hothouse (13), calcining compartment (14) move trolley (15), hot air pipe Road (16), track (17).

When advancing equipment on one wire by tipper (3)~activated bath (11) installation, one 3 tons of top installation becomes again The electric block (12) of frequency, electric block can walk from tipper (3) to moving trolley (15), reduce the centre loaded in this way Link and optional equipment；According to removing, the flying dust time is long, can be with a few set ash handling equipments of polygamy, and (8)~(11) are work in preparation Change slot, it is longer according to activation time, match 4 activated baths, to influence entire process time when preventing activation.

Specified operational procedure is as follows:

Module is transported on tipper (3) with fork truck (2), is sent after inverting to removing flying dust in flying dust dust-extraction unit (1), It is transported on tipper (3) after cleaning flying dust by fork truck (2), then after inverting, is hung in rinsing bowl (4) by electric block (12), water It is hung in descaling bath (5) by electric block (12) after cleaning, is hung in potcher (6) by electric block (12) again after pickling again, It is hung in air-dried slot (7) by electric block (12) again after rinsing, activated bath (8)~activation is hung in by electric block (12) after air-drying It is activated in the slot of any one no module of slot (11), is hung in air-dried slot (7) and air-dried by electric block (12) after the completion of activation, air-dried It is hung to move by electric block (12) afterwards and enters hothouse (13) on trolley (15), calcining compartment is entered by automatic vehicle after drying (14) interior calcining compartment, calcining is completed and cooling, moves trolley (15) for the module handled well and is transported to unloading position, then by fork truck (2) it is transported between test package, forms finished product.

Ash handling equipment

Ash handling equipment is exactly a bag-type dust collector, and dust-extraction unit air inlet is made into a confined chamber, and import air duct is pressed It is specially designed according to module common-use size, prepares purging rifle and dedicated through-hole tool, may be implemented to remove the floating ash on module With collection ash in component hole.General deduster dedusting air quantity is in 12000~30000m3/h；Dedusting area is in 90m2 or more, deashing pressure Power is furnished with the compressed air hose of purging in 0.5~0.7MPa.

Water washing device, water rinse bath schematic diagram therein is referring to Fig. 3, including with flowering structure: automatic spray and automatic wind Dry systems (18), intelligent electric actuating mechanism (19), ultrasonic oscillator group (20), bubbling pipe (21), electric feed water valve (22), Electric blowdown valve (23), dredge pump (24).

Groove body is made of 316L stainless steel plate, and having a size of long 2600X wide 1600X high 2000, bottom is welded according to centrum, 3 °~10 ° of its tilt angle, lowest part installs drainpipe, in order to blowdown, electric blowdown valve (23) is installed on sewage pipe and are arranged Dirt pump (24), improves efficiency convenient for sewage is discharged in time；Case is provided with anticollision bracket, and trough rim is installed guide plate, is easy to lift Module does not damage other equipment in groove body and slot, and the intracorporal dead size of slot is long 2400X wide 1400X high 1800；Surrounding in groove body Ultrasonic oscillator is installed with bottom, surrounding divides three levels to install ultrasonic oscillator group (20), and six groups of ultrasonic wave vibrations are installed in bottom Son, ultrasonic power is in 30~70KW, and frequency is in 25~30KHz；A fixed bracket is installed in groove body bottom, installs 14 under bracket DN15 316L bubbling pipe (21)；14 bubbling pipes (21) are evenly distributed in bottom, and 12 φ 0.5~1.5 are provided on bubbling pipe Venthole keeps each venthole gas output on every root canal uniform by root to distally gradually amplifying, and gas outlet is downward when installation Installation installs a valve on each pipe to prevent the coal ash washed down from blocking gas outlet, to be used to adjust every root canal Air inflow, keep 14 sub- air inflows of root canal uniform, slot be bubbled inlet main pipe on solenoid valve is installed, for automatically control be bubbled； Groove body is equipped with magnetic double level gauge, for monitoring groove body water level, while preventing the low maloperation of liquid level, damages ultrasonic equipment；Into Electrically operated valve is installed at the mouth of a river, it and liquidometer are used to automatic feeding water control together；Installation auto-flushing and air-dried system at the top of groove body System, it be by intelligent electric actuating mechanism, worm and gear and chain, stainless steel tube and spray broom, non-return valve, solenoid valve, Connect hose composition.Intelligent electric actuating mechanism is used to determine walking section and drives nozzle automatically walk, passes through solenoid valve Control water inlet or into compressed air, to be rinsed and air dry operation；Entire groove body is by PLC system centralized control, system In there are three variable time-setting relay, be for according to setting ultrasonic cleaning time the case where every batch of module, be bubbled time and super Sound is bubbled mixing scavenging period.

Slot cleaning operation.

First according to the size of this batch of module, municipal water or recycling water are automatically added to setting liquid level, then will have been cleared up The module of flying dust is hung in pond, is cleaned by ultrasonic according to setting time, and pressure pulse cleaning and ultrasound are bubbled mixing cleaning, then certainly It is dynamic to open blowdown valve, start dredge pump, when the liquid of discharge arrives specified liquid level, starts automatic flushing device, first progress water punching It washes, the pressure of water is in 0.4~0.6MPa；Auto-flushing finishes, and backwash water valve is automatically closed, and opens compressed air purging valve, into Row automatic air-drying purging, finishes to automatic air-drying, hangs out catalyst module, hang in descaling bath, restart automatic flushing device, clearly Clean groove body, flushing finish, and close blowdown valve, close dredge pump, fill the water again, prepare to clean next module, used After sewage is discharged into sedimentation basin natural sedimentation, refilter for repeating washing module.This process is between 15~40 minutes.

Descaling bath configuration

Descaling bath groove body is also to be made of 316L stainless steel plate, having a size of long 2300X wide 1300X high 2000, bottom according to Centrum welding, 3 °~10 ° of tilt angle, lowest part installs drainpipe and installs acidproof electronic row on sewage pipe in order to blowdown Dirty valve and acidproof dredge pump, improve efficiency convenient for sewage is discharged in time；Case is provided with anticollision bracket, and trough rim installs guide plate, It is easy to lift module and does not damage other equipment in groove body and slot；Also installation 14 is bubbled with DN15 stainless steel below bottom module bracket Pipe, structure type and arrangement are identical with water rinse bath, are fitted also with installation electrically operated valve at liquidometer and import water pipe；It is pushed up 316L acid solution inlet tube, inlet tube one end connection metering pump discharge weld in portion, and metering pump intake connects acid solution tank；Groove body lower part peace Heater and temperature controller are filled, power, according to season and acid solution situation, sour water is controlled certain between 10KW~30KW Temperature.

Pickling operation

According to the size of this batch of module, the deionized water of corresponding amount is injected, then according to its pollution level and polluter, is used Metering pump injects a certain amount of acid solution, is made into certain density sour water, general acid be sulfuric acid, oxalic acid or citric acid one kind or Several, the sour water concentration of preparation is 2%~7%；When module is put into sour water, opens bubbling device and hung after reacting it sufficiently Module out is placed in potcher and cleans, and used sour water regards its situation, continues to use or replaces.

Potcher configuration

Potcher groove body is also to be made of 316L stainless steel plate, having a size of long 2300X wide 1300X high 2000, bottom according to Centrum welding, 3 °~10 ° of tilt angle, lowest part installs drainpipe, in order to blowdown draining, installs on sewage pipe electronic resistance to Sour blowdown valve and acidproof dredge pump, improve efficiency convenient for sewage is discharged in time；Case is provided with anticollision bracket, trough rim installation guiding Plate is easy to lift module and does not damage other equipment in groove body and slot；Also 14 are installed below bottom module bracket with DN15 stainless steel Bubbling pipe, structure type and arrangement are identical with water rinse bath, are fitted also with installation electrically operated valve at liquidometer and import water pipe: Heater and temperature controller are installed in groove body lower part, and power is between 10KW~30KW, according to seasonal conditions, by deionization water control System is in certain temperature.

Potcher operation

According to the size of this batch of module, the deionized water of corresponding amount is injected, after module is hung in, opens bubble systems, After operation 5~15 minutes, module is recalled and is placed in air-dried slot, used liquid regards its situation, continues to use or is discharged into In detention tank, rinse bath clean water is used as after precipitating filtering and is used.

Air-dry slot configuration

The groove body for air-drying slot is also to be made of 316L stainless steel plate, and having a size of long 2300X wide 1300X high 2000, bottom is pressed It is welded according to centrum, 3 °~10 ° of tilt angle, lowest part installs drainpipe, in order to blowdown draining, installs on sewage pipe electronic Acidproof blowdown valve and acidproof dredge pump, improve efficiency convenient for sewage is discharged in time；Case is provided with anticollision bracket, and trough rim installation is led To plate, it is easy to lift module and does not damage groove body and protective module；Air drying system is installed, it is held by intelligent electric at the top of groove body Row mechanism, worm and gear and chain, stainless steel tube and spray broom, solenoid valve, connection hose composition.Intelligent electric executes machine Structure is used to determine walking section and drives nozzle automatically walk, by solenoid valve control on-off compressed air, to carry out air-drying mould Block operation；

Air-dry slot operation

After module hangs in air-dried slot, start automatic air-drying system, intelligent electric actuating mechanism, worm and gear and chain Transmission system will be run, and the stainless steel tube being fixed on chain and nozzle is driven to walk above module, while solenoid valve is opened Compressed air sprays, and purges the liquid on module, reaches air-dried effect, compressed air pressure 0.4~0.6MPa it Between, air-dry after module hang in activated bath, when slot internal water accumulation hydrops to it is a certain amount of when, open dredge pump in time, exhaust hydrops Ponding.

Activated bath configuration

The groove body of activated bath is also to be made of 316L stainless steel plate, and having a size of long 2300X wide 1300X high 2000, bottom is pressed It is welded according to centrum, 3 °~10 ° of tilt angle, lowest part installation drainpipe is installed electronic in order to blowdown drain on sewage pipe Acidproof blowdown valve and acidproof dredge pump, improve efficiency convenient for waste liquid is discharged in time；Case is provided with anticollision bracket, and trough rim installation is led To plate, it is easy to lift module and does not damage other equipment in groove body；Also 14 are installed below bottom module bracket with DN15 stainless steel drum Bubble pipe, structure type and arrangement are identical with water rinse bath, are fitted also with installation electrically operated valve at liquidometer and import water pipe；Its Activating solution inlet tube is welded at top, and threeway, threeway one end connection metering pump discharge are housed on inlet tube, and metering pump intake connection is matched Liquid bath, the threeway other end also connect another metering pump, and metering pump intake connection high concentration activates liquid bath；The installation of groove body lower part adds Hot device and temperature controller, power control liquid temperature in activated bath between 55~65 DEG C between 30KW~50KW；Activation Install Insulation outside slot additional；Install top cover at the top of activated bath additional.

Activated bath operation

It joined the activating solution of certain liquid level particular formulation, tank liquid according to this batch of module situation in activated bath Have been heated to 60 DEG C；After hanging in module, top cover starts to activate, and starts self-clocking；Period timing discontinuity is opened Bubbling device is opened, so that element sufficiently carries out priming reaction, activation time is set according to the pollution level of module, generally 2~4 Between a hour, activation time is arrived, and control system meeting sound-light alarm prompt hangs out module, returns to air-dried slot and air-dry；Remaining activation Liquid is supplemented with high concentration activating solution in time, and each magnitude of recruitment is depending on actual conditions, generally at 200~400 liters or so, to After activating solution used several times, activating solution is exhausted depending on its situation, is replaced with new activating solution.

Drying/calcining furnace configuration

Drying/calciner plant is the integrated kiln of Automatic Control.Kiln uses the complete of domestic and international kiln advanced technology Light frame structure formula energy-saving tunnel kiln, mainly by main structure, transportation system, heating system, dehumidification system, control system etc. Five parts composition.Kiln is that Whole fiber lightweight modules assemble Detachable structure.

(1) stove outer covering main structure uses steel plate and section steel material for carbon steel material, and liner and hot air circulation channel use 316L stainless steel processes wave-shape board, and external backplate uses 304 stainless steels.

(2) furnace inside wall and bottom heat preservation use high alumina needle punched blanket, and the heat preservation of furnace inner top uses high alumina needle punched blanket.

(3) air exhauster main shaft and impeller use 321 materials, and casing uses 304 materials.

(4) comprehensive utilization of thermal energy is carried out to drying section concurrent heating wind using the waste heat of temperature descending section.

(5) it is configured with full-automatic control system.

Drying/calcining one furnace apparatus diagrammatic cross-section is shown in Fig. 4

Kiln is single-store frame modular construction.By groups such as external steel frame construction, furnace internal-lining, furnace insulation structures At.Transmission system, electric heating system organic assembling are installed in apparatus body structure.

Kiln body structure carries out Aided design according to requirements such as material characteristic and production capacities.

(1) body structure: cabinet uses sub-unit structure, is connected between unit with expansion joint.

(2) cabinet material: equipment liner uses Stainless Steel 316L, and equipment outer wall uses A3 steel plate, and box frame uses carbon Steel profile welding.

(3) inner-tube structure: unit liner is having a size of length: 2000mm, kiln car channel are wide: 2170mm, high: 2400mm.Calcining After furnace installation, liner inner wall straightness≤± 5mm within the scope of equipment entire length.

(4) each unit box liner junction uses stainless steel compensator piece, existing between expansion joint and furnace body main framing It fills high alumina needle punched blanket when the workshop secondary assembling of field and is compacted.

(5) design of calcining furnace circulation air path is connected in body side with liner.

Heating circulation system

Heating circulation system includes circulating fan, electric heating system, circulation air path system.

Circulating fan: a circulating fan is arranged in each unit.Circulating fan using A resistant to high temperature transmission it is mutliblade from Heart blower (550 DEG C of heatproof), circulating fan air quantity are 12000~16000Nm3/h, and wind pressure is 1300~1000Pa.Power of motor 5.5kw.Air circulation fan impeller material is 321, and external rack is carbon steel, and blower is placed at the top of apparatus body circulation air path.

Electric heating system: electric heating is that Cr20Ni80 resistance band is process, and is installed in circulation air path.

Circulation air path: design is connected in body side with liner；1 circulation air path of each unit section, hot wind is from kiln Top is pumped through circulating fan to calcining furnace cabinet, is penetrated the catalyst bed of material from module bottom and is drawn into circulation air path and is added Heat so recycles.

Expect transportation system

Module is loaded using kiln car, the hydraulic top vehicle kind of drive.It is pushed up with the speed of certain speed into a kiln car into kiln Vehicle.

Drying/calcining furnace operation

This kiln loads product using kiln car, and under the promotion of kiln car pusher, kiln car constantly enters in kiln from kiln hood.Kiln car exists Slowly operation completes entire sintering process by kiln internal channel in kiln.Kiln car and product are transported by electronic motorcycle after kiln car kiln discharge Be sent to automatic carrier return line, then sent kiln car to kiln hood direction by kiln tail by automatic carrier return line, after by kiln hood transhipment motorcycle go to top Vehicle device completes entire cycle task.

Kiln car operation is mainly power by kiln hood oil-press pusher in kiln, cylinder putter is pushed, so that kiln car be pushed to move. Kiln car enters and leaves, and is all reprinted by the electronic motorcycle of kiln hood, kiln tail.Transmission system carries out interlocked control, easy to operate, the degree of automation It is higher.

Kiln car frame uses the good fashioned iron of structural strength, and wheel uses the unilateral wheel of the good cast steel of wear-resisting property, built-in Two sets of high-temperature bearings.Thermal insulation material uses high-grade fibers product, is allowed to not only have good elevated temperature strength, thermal stability.Kiln Vehicle and kiln side wall are designed to curved seal structure, to prevent steam leakage in kiln.

Kiln car is sent to handling the end of a thread by loading and unloading track tail by turn-around.By worker personnel in the traveling process of kiln car from back to front Manual operation realizes the purpose of loading/unloading products.

Kiln car from calcining kiln come out after, hooked onto the kiln tail electric trailer of calcining kiln, electric trailer laterally run, by kiln Vehicle is sent to the loading and unloading area of turn-around.

Kiln car from turn-around come out after, hooked onto the kiln hood electric trailer of calcining kiln, electric trailer laterally run, by kiln Vehicle is sent to the area kiln hood Ding Che of calcining kiln.

Electronic motorcycle carries out automatic positioning, and automatic running, the motorcycle structure novel is easy to use, runs smoothly, greatly The labor intensity for alleviating worker ensure that product safety goes out, enters kiln.

This kiln completes kiln car average rate using pushing-type single pole kiln car pusher on a platform, continuously into kiln.The machine is by oil liquid Press station, oil cylinder, the several part compositions of guide rail trolley.In entire kiln car progradation, kiln hood top vehicle system has following features:

(1) kiln car pusher push rod is slowly advanced kiln car, in place after retract rapidly so on circulate, ensure that kiln car in kiln Slowly, at the uniform velocity advance.It not only runs smoothly, not accident-proneness, products temperature uniformly rises, and improves firing quality.

(2) when kiln firing period changes, the kiln car pusher push rod speed of service also can adjust and control, to adjust Whole kiln car is into and out of kiln speed, flexible operation, conveniently.

(3) kiln car pusher is equipped with pressure gauge, and when kiln car pusher acts, operative employee needs to pay attention to the pressure feelings that pressure gauge is shown Condition illustrates that resistance is too big in kiln car operation, need to check in time, otherwise, can damage hydraulic press, even if exceeding specified value Make push rod distortion fracture and kiln in reversing.

Kiln car track has kiln inner orbit and kiln outside track, and kiln outside track includes both ends motorcycle track, loop.Kiln inner orbit It is fixed by fixed device, rail joint all uses diagonal joint form, and stays every a distance and set one of dilatation joint, guarantees Kiln car, motorcycle run smoothly.

Ventilation system

Kiln body roasts ventilation system:

(1) most latter two cycling element does not arrange electric heating as temperature descending section.

(2) air draft is moved towards are as follows: temperature descending section is arranged an air exhauster and dryer section, temperature descending section are sent in the discharge of temperature descending section tail gas Each unit section is arranged a tail gas wind and exports, and a waste heat wind inlet is arranged in the every section of dryer section；An exhaust is arranged in dryer section Dryer section is discharged in dryer section tail gas containing moisture by blower, and the every section of warming-up section is arranged a tail gas wind and exports, summarizes and dryer section tail Gas blower will heat up decomposition gas and exclude warming-up section.

(3) dryer section exhaust fan selects high wind pressure Wind Volume blower

(4) each air exhaust branch pipe and winding pipe are DN250, and installing a wafer type butterfly valve on each branch pipe can be to each A branch pipe adjusts aperture.

Control system

(1) control system, which is realized, is configured and automatically controls to each temperature section of technical process；

(2) control system carries out real-time monitoring to system running state, exception and accident condition to equipment and system into Sound-light alarm is gone；

(3) system is equipped with man-machine dialog interface, and system running state and in due course interfering system fortune manually can be monitored in real time Row；

(4) device configuration hand auto-switching push button, can carry out emergency operation in an emergency situation, it is ensured that equipment and be The safety of system；

System operatio

In practical operation, the module after activation is air-dried is mounted on kiln car, and fluid pressure drive device will be small equipped with module It is dried in vehicle push-in drying room, for drying temperature between 80~120 DEG C, drying will carry out 6~10 hours, kiln after drying Calcining compartment is released from drying room and be pushed into vehicle, initially enters heating zone, and heating rate is warming up to 400 DEG C less than 1.5 DEG C/min When, it initially enters flat-temperature zone and initially enters cooling area, rate of temperature fall works as temperature less than 1.5 DEG C/min after constant temperature is kept for 7 hours When dropping to 80 DEG C or less, loads and calcined the kiln car of module and come out from calcining kiln, hooked onto electric trailer, electric trailer is horizontal To operation, kiln car is sent to the loading and unloading area of turn-around, lower module is unloaded and tests packaging, regenerated catalyst resume module is complete At.

The present invention is mainly used to realize the practical problem of SCR denitration regeneration disposition line batch production, new by inventing Equipment new process, effective and reasonable arrangement and configuration equipment, keep SCR denitration regeneration technology further perfect, are fully achieved The needs of factory's actual production, while much techniques improve efficiency, have saved the energy and resource from production reality.

Claims (2)

1. a kind of SCR denitration regeneration technology, it is characterised in that: by a set of regeneration disposing technique process, and match therewith It the equipment arrangement of conjunction, the control for the treatment of trough combination, full automatic treatment slot and semi-automatic disposition line traffic control and recycles and is System composition, the regeneration disposing technique process are as follows: by the artificial sample to a batch module to be processed, determining activating solution Formula and activation time, the formula of pickling solution and pickling time, the ultrasonic cleaning time, are bubbled the liquid feeding liquid level of each groove body Scavenging period, then successively carry out flying dust cleaning, washing deashing, pickling, rinsing, air-dry, activation, air-dry, it is dry with calcining, at Product packaging, wherein the setting of time is completed by the variable time-setting relay of control system；The feature of the equipment arrangement is such as Under: by flying dust dust-extraction unit, tipper, all treatment trough, that is, rinsing bowls, descaling bath, potcher, air-dried slot, activated bath, drying With moving on the straight line position that trolley is mounted in workshop for calcination system, connected by loading electric block at an upper portion thereof Together；The treatment trough combination is as follows: preparing four activated baths in a disposition line, includes ultrasonic wave in rinsing bowl Device, bubbling cleaning device, auto-flushing and automatic air-drying device, each treatment trough configure dredge pump；The full-automatic place The control of reason slot and semi-automatic disposition line traffic control are as follows: each groove body is arranged automatic control device, according to be previously set when Between and relevant monitoring device, with PLC system realize automation control；Whole disposition line realizes semi-automatic control, lifting It is carried out under manual intervention with unloading module, after each slot automatically execution processing, sound-light alarm prompt operator can be issued； The cyclic utilization system is as follows: water circulation aspect, the water of rinsing bowl, potcher and automatic spray after use, pass through row Dirt pump is discharged into sedimentation basin, and after natural sedimentation and filtering, circulation is used to wash module, and energy circulation aspect will be dried and be forged Sintering is combined, and utilizes the residual heat drying module of calcining module；

The rinsing bowl is integrated with ultrasonic cleaning, pressure pulse cleaning, automatic spray cleaning, automatic air-drying, automatically adds water, arranges automatically Dirty and automatic rinsing tank body function；The device of the ultrasonic cleaning is as follows: surrounding and bottom installation ultrasonic wave vibration in groove body Subgroup, surrounding divide three levels to install oscillator group, and six groups of ultrasonic oscillator groups are installed in bottom, while utilizing liquidometer measurement letter Number, design low liquid level protection；The bubbling cleaning device is as follows: bubbling pipe uses 316L stainless steel tube, is provided on bubbling pipe 12 ventholes keep each venthole gas output in a pipe uniform by root to distally gradually amplifying, bubbling pipe installation In groove body bottom, Open Side Down, and each groove body installs 14 bubbling pipes, arranged in parallel, and a valve is installed on every bubbling pipe Door, for adjusting the air inflow of pipe, inlet tube sectional area is greater than twice of outlet；The described automatic spray cleaning and automatic It air-dries and uses integrated design；The device automatically added water includes magnetic double level gauge and motor-operated control valve；The automatic row Dirty device includes dredge pump, motor-operated control valve, magnetic double level gauge；The automatic rinsing tank body is by that will tie in blowdown Shu Shi starts automatic spraying device, to clean used groove body automatically；

The integral system of the automatic spray cleaning and automatic air-drying is installed at the top of rinsing bowl, which is by intelligence Energy type electric operator, worm and gear and chain, stainless steel tube and spray broom, non-return valve, solenoid valve, connection hose group At intelligent electric actuating mechanism is used to determine walking section and drives nozzle automatically walk, also by magnetic valve controlled feed It is into compressed air, to be rinsed and air dry operation.

2. a kind of SCR denitration regeneration technology according to claim 1, it is characterised in that: the drying with forge Burn through cross drying and calcining all-in-one oven realize, it is described drying with calcining all-in-one oven by main body kiln, transportation system, heating system, Dehumidification system, five part of control system composition, main body kiln assemble Detachable structure using Whole fiber lightweight modules, and kiln body is Tunnel structure is furnished with kiln car in tunnel, and module is mounted on kiln car, is hydraulically operated device driving kiln car in kiln body tunnel Walking, it is thus achieved that drying, heating, calcining, cooling, entire technical process realizes Automatic Control by PLC, and utilizes kiln The just activated module of the residual heat drying of the subsequent cooling of furnace technology.