CN108889105A - Sulphur purification system and its purification process are consolidated in the strength denitration of cement furnace coal-fired flue-gas - Google Patents
Sulphur purification system and its purification process are consolidated in the strength denitration of cement furnace coal-fired flue-gas Download PDFInfo
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- B01D53/34—Chemical or biological purification of waste gases
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Abstract
The invention discloses a kind of cement furnace coal-fired flue-gas strength denitrations to consolidate sulphur purification system and its purification process.The system includes cooling and dedusting device, catalytic denitration device and harmful substance absorbing and removing device；The technique further includes having used strength denitration sulphur-fixing agent.Coal-fired flue-gas is passed through cooling and dedusting device smoke inlet, cooling and dedusting device outlet flue is connected to catalytic denitration device smoke inlet, catalytic denitration device outlet flue is connected with harmful substance absorbing and removing device smoke inlet, absorption and spray is filtered for multiple times in flue gas, it comes into full contact with strength denitration sulphur-fixing agent, sufficiently react, the flue gas of final purification is discharged from harmful substance absorbing and removing device outlet flue.Nitrogen oxysulfide and other toxic harmful exhaust gas substances in energy fast eliminating flue gas of the present invention, reach limit value as defined in environmental protection administration, are suitable for cement furnace and administer coal-fired flue-gas pollution.The present invention has the characteristics that simple process, equipment are few, investment is low, denitration captured sulfur result is good.
Description
Technical field
The invention belongs to technical field of environment pollution control, sulphur is consolidated in specifically a kind of cement furnace coal-fired flue-gas strength denitration
Cleaning process technology.
Background technique
With deepening continuously for environmental improvement, the pollution that caused by coal burning of cement furnace has obtained strong control.But existing denitration
Sulfur solidifying technique, complex process, investment height, low efficiency are difficult to adapt to the stringenter environment protection treating requirement of cement furnace.Therefore,
It invents a kind of denitration efficiency height, simple process, adapt to the strength denitration Desulfurization Technology that cement furnace system uses, be to need to recognize
The project that true solution is determined.
Summary of the invention
The purpose of the present invention is to provide a kind of simple process, denitration efficiency are high, adapt to what cement furnace system used
Coal-fired flue-gas strength denitration Desulfurization Technology,
The technology has the characteristics that quick denitration, efficiency of sulfur retention.
To achieve the above object, the present invention provides the following technical solutions：
Sulphur purification system, including cooling and dedusting device, catalytic denitration dress are consolidated in a kind of cement furnace coal-fired flue-gas strength denitration
It sets and harmful substance absorbing and removing device；Coal-fired flue-gas is passed through cooling and dedusting device smoke inlet, and cooling and dedusting device outlet flue connects
It is connected to catalytic denitration device smoke inlet, catalytic denitration device outlet flue is connected with harmful substance absorbing and removing device smoke inlet, only
The flue gas of change is discharged from harmful substance absorbing and removing device outlet flue.
The purification system further includes that cooling de-dusting cycle pond, catalytic denitration liquid circulatory pool and harmful substance absorption are de-
Except liquid circulatory pool, match respectively with the cooling and dedusting device, catalytic denitration device and harmful substance absorbing and removing device：
The water outlet in cooling de-dusting cycle pond is connected to the sprinkling equipment of cooling and dedusting device, the discharge outlet connection of cooling and dedusting device
To the water inlet in cooling de-dusting cycle pond, water circulation is formed；The water outlet of catalytic denitration liquid circulatory pool is connected to catalytic denitration
The sprinkling equipment of device, the discharge outlet of catalytic denitration device are connected to the water inlet of catalytic denitration liquid circulatory pool, and it is solid to form denitration
Sulphur agent water solution cycle；The water outlet of harmful substance absorbing and removing liquid circulatory pool is connected to the spray of harmful substance absorbing and removing device
Equipment is drenched, the discharge outlet of harmful substance absorbing and removing device is connected to the water inlet of harmful substance absorbing and removing liquid circulatory pool, shape
At harmful substance absorbing and removing water solution cycle.
A cooling and dedusting device generally cooling and dedusting device cabinet, cooling and dedusting device cabinet opposite sides
It is respectively arranged below with cooling and dedusting device smoke inlet and cooling and dedusting device outlet flue；In cooling and dedusting device smoke inlet and cooling
Erecting between dust-extraction unit outlet flue has one layer of partition, and box house is separated into two spaces, is located at cooling and dedusting device into cigarette
The space of mouth side is cooling and dedusting device Unit one, and the space positioned at cooling and dedusting device outlet flue side is cooling dedusting dress
Unit two are set, only there are venting channels on top for the partition, then make the inverted U-shaped ventilation of formation one inside cooling and dedusting device logical
Road；Cooling and dedusting device sprinkling equipment, bottom are equipped at the top of cooling and dedusting device Unit one and cooling and dedusting device Unit two
It is all provided with cooling and dedusting device discharge outlet；Equal level shelves one in cooling and dedusting device Unit one and cooling and dedusting device Unit two
Layer cooling and dedusting device filters adsorption layer.
A catalytic denitration device generally catalytic denitration device box, one side-lower of catalytic denitration device box are set
There is catalytic denitration device smoke inlet, the top of the opposite other side is equipped with catalytic denitration device outlet flue；Catalytic denitration device into
Erecting between mouth and catalytic denitration device outlet flue has two pieces of partitions, and box house is separated into three spaces, and it is de- to be located at catalysis
The space of nitre device smoke inlet side is catalytic denitration device Unit one, and the space positioned at catalytic denitration device outlet flue side is
Catalytic denitration device Unit three, space in the middle are catalytic denitration device Unit two；By catalytic denitration device smoke inlet side
There are venting channels above for partition, and there are venting channels in lower section for the partition by catalytic denitration device outlet flue side, then make
A S-shaped venting channels are formed inside catalytic denitration device；Catalytic denitration device Unit one top and catalytic denitration device Unit two
Top is equipped with catalytic denitration device sprinkling equipment, arranges in catalytic denitration device box bottom equipped with catalytic denitration device Unit one
The mouth of a river and catalytic denitration device two, three unit discharge outlet；In three units of catalytic denitration device, equal level is shelved one layer and is urged
Change denitrification apparatus and filters adsorption layer.
A harmful substance absorbing and removing device generally harmful substance absorbing and removing device box, harmful substance are inhaled
It receives one side-lower of removing means cabinet and is equipped with harmful substance absorbing and removing device smoke inlet, the top of the opposite other side is equipped with nocuousness
Material absorbing removing means outlet flue；In harmful substance absorbing and removing device smoke inlet and harmful substance absorbing and removing device smoke
Erecting between mouthful has two pieces of partitions, and box house is separated into three spaces, is located at harmful substance absorbing and removing device smoke inlet one
The space of side is harmful substance absorbing and removing device Unit one, positioned at the space of harmful substance absorbing and removing device outlet flue side
For harmful substance absorbing and removing device Unit three, space in the middle is harmful substance absorbing and removing device Unit two；By nuisance
There are venting channels above for the partition of matter absorbing and removing device smoke inlet side, lean on harmful substance absorbing and removing device outlet flue
There are venting channels in lower section for the partition of side, then make to form a S-shaped venting channels inside harmful substance absorbing and removing device；Have
Harmful substance suction is equipped at the top of evil material absorbing removing means Unit one and at the top of harmful substance absorbing and removing device Unit two
Removing means sprinkling equipment is received, it is single to be equipped with harmful substance absorbing and removing device one in harmful substance absorbing and removing device box bottom
First discharge outlet and harmful substance absorbing and removing device two, three unit discharge outlet；In harmful substance absorbing and removing device Unit one
Level shelves one layer of harmful substance absorbing and removing device Unit one filtering adsorption layer, in harmful substance absorbing and removing device Unit two
In, level shelves two layers of harmful substance absorbing and removing device Unit two filtering adsorption layer, in harmful substance absorbing and removing device three
In unit, level, which is shelved, filters three list of harmful substance absorbing and removing device that adsorption layer and one layer of dehydrating demisting layer form by two layers
Member filtering absorption and dehydrating demisting layer.
Sulphur purification process is consolidated in a kind of cement furnace coal-fired flue-gas strength denitration, and purification process is：
The coal-fired flue-gas of cement furnace discharge enters cooling dedusting dress from cooling and dedusting device smoke inlet after deduster
It sets, is leaked out with U-shaped, the atomizing spray purifying and cooling of filtering absorption and two sprinkling equipments by filtering adsorption layer twice, cigarette
Dirt particulate matter is cleaned and is adsorbed by filtering, and flue-gas temperature drops to 50-60 DEG C, and the flue gas of preliminary purification goes out from cooling and dedusting device
Mouth is discharged except cooling and dedusting device；
The flue gas of cooling and dedusting device discharge enters catalytic denitration device from catalytic denitration device smoke inlet, is leaked out with S type,
By filtering the filtering absorption and the atomizing spray denitration of two sprinkling equipments purification of adsorption layer three times, soot dust granule object is by denitration
Gu sulphur is purified and adsorbed by filtering, it is discharged except catalytic denitration device from catalytic denitration device outlet flue；In purification denitration flue gas
During, denitration sulphur-fixing agent aqueous solution and the nitrogen oxides in flue gas of atomizing spray come into full contact with, and sufficiently react, and decompose life
At the nitrogen oxides of the high-valence states such as nontoxic nitrogen and nitrogen dioxide, nitrogen peroxide, dinitrogen pentoxide, nontoxic nitrogen is with cigarette
Gas discharge, the nitrogen oxides of high-valence state are entering in harmful substance absorbing and removing device, by micro- in denitration sulphur-fixing agent aqueous solution
Measure Metal Ions Absorption, purification；
The flue gas of catalytic denitration device discharge enters harmful substance absorption from harmful substance absorbing and removing device smoke inlet and takes off
Except device, leaked out with S type, the atomizing spray absorbing and removing of filtering absorption and two sprinkling equipments by filtering adsorption layer three times
Harmful substance, and the dehydrating demisting through dehydrating demisting layer, soot dust granule object are adsorbed by filtering again and after being dehydrated demisting, finally quilt
The flue gas of the absorbing and removing purification of harmful substance is discharged harmful substance from harmful substance absorbing and removing device outlet flue 3.15 and inhales
It receives except removing means 3, into chimney, completes the strength denitration of cement furnace coal-fired flue-gas and consolidate sulphur purification process；In nuisance
During matter absorbing and removing device purifies denitration flue gas, in the harmful substance absorbing and removing aqueous solution and flue gas of atomizing spray
The harmful substances such as high-valence state nitrogen oxides, sulfur dioxide come into full contact with, sufficiently react, the nitrogen oxides of absorbing and removing high-valence state and
Sulfur dioxide, purifying smoke.
During cooling and dedusting device purifying smoke, the water that cooling and dedusting device sprinkling equipment sprays out passes through draining
Mouth flows into cooling de-dusting cycle pond, and the water outlet in cooling de-dusting cycle pond is supplied to cooling and dedusting device sprinkling equipment, shape again
It is recycled at water；
During catalytic denitration device purifying smoke, denitration sulphur-fixing agent that catalytic denitration device sprinkling equipment sprays out
Aqueous solution flows into catalytic denitration liquid circulatory pool by discharge outlet, and the water outlet of catalytic denitration liquid circulatory pool is supplied to catalytic denitration dress again
Sprinkling equipment is set, denitration sulphur-fixing agent water solution cycle is formed；
During harmful substance absorbing and removing device purifying smoke, the spray of harmful substance absorbing and removing device sprinkling equipment
The harmful substance absorbing and removing aqueous solution drenched out flows into harmful substance absorbing and removing liquid circulatory pool by discharge outlet, and harmful substance is inhaled
The water outlet for receiving removing liquid circulatory pool is supplied to harmful substance absorbing and removing device sprinkling equipment again, forms harmful material absorbing removing
Water solution cycle.
The beneficial effects of the invention are as follows：
1, the present invention presses a variety of strong oxidizers with the extremely strong oxidisability and broad-spectrum disinfecting characteristic of strong oxidizer
Ratio science is configured to strength denitration sulphur-fixing agent.The strength denitration sulphur-fixing agent has the characteristics that strength denitration, efficiency of sulfur retention, can be fast
Nitrogen oxysulfide and other toxic harmful exhaust gas substances in speed removing flue gas, reach limit value as defined in environmental protection administration, are suitable for
Cement furnace administers coal-fired flue-gas pollution.
2, cooling and dedusting device of the invention, catalytic denitration device, harmful substance absorbing and removing device are that strength denitration is solid
The accelerator of sulphur agent and the fast reaction of nitrogen oxysulfide.Coal-fired flue-gas after deduster is discharged, flue-gas temperature in 130--150 degree,
By cooling and dedusting device, flue-gas temperature is dropped to 50--60 degree, to adapt to the temperature that sulphur is consolidated in strength denitration sulphur-fixing agent denitration.It urges
Change denitrification apparatus strength denitration sulphur-fixing agent, is filled in mist and come into full contact with nitrogen oxysulfide, sufficiently react, be catalyzed nitrogen oxides
It decomposes, generates the nitrogen oxides of nontoxic nitrogen and high-valence state.The nitrogen of harmful substance absorbing and removing device absorbing and removing high-valence state
The poisonous and harmful substances such as oxide, absorbing and removing sulfur dioxide.
3, huge, complex process that the present invention overcomes other existing technical equipments invests high, effect difference disadvantage,
Have the characteristics that simple process, equipment are few, investment is low, denitration captured sulfur result is good.
It administers coal-fired flue-gas the present invention is especially suitable for cement furnace to pollute, energy fast denitrogenation, in fast eliminating flue gas
Toxic harmful exhaust gas substance.Cement furnace flue gas is after the inventive technique process, nitrogen oxides, sulfur dioxide, flue dust
Grain object and metal pollutant, can reach limit value as defined in local environmental protection administration.
Detailed description of the invention
Fig. 1 is that sulphur purification system and process flow chart are consolidated in cement furnace coal-fired flue-gas strength denitration of the present invention,
Fig. 2 is the structural schematic diagram of cooling and dedusting device 1,
Fig. 3 is the structural schematic diagram of catalytic denitration device 2,
Fig. 4 is the structural schematic diagram of harmful substance absorbing and removing device 3.
It is marked in figure：
1- cooling and dedusting device, 1.1- cooling and dedusting device cabinet, 1.2- cooling and dedusting device smoke inlet, 1.3- cooling remove
Dirt device Unit one, 1.4- cooling and dedusting device Unit two, 1.5- cooling and dedusting device Unit one filter adsorption layer, 1.6- cooling
Dust-extraction unit Unit two filters adsorption layer, one unit spray equipment of 1.7- cooling and dedusting device, two list of 1.8- cooling and dedusting device
First sprinkling equipment, 1.9- cooling and dedusting device partition, 1.10- cooling and dedusting device outlet flue, 1.11- cooling and dedusting device one are single
First discharge outlet, two unit discharge outlet of 1.12- cooling and dedusting device,
2- catalytic denitration device, 2.1- catalytic denitration device box, 2.2- catalytic denitration device smoke inlet, 2.3- catalysis are de-
Nitre device Unit one, 2.4- catalytic denitration device Unit two, 2.5- catalytic denitration device Unit three, 2.6- catalytic denitration device one
Unit filters adsorption layer, and 2.7- catalytic denitration device Unit two filters adsorption layer, and the filtering of 2.8- catalytic denitration device Unit three is inhaled
Attached layer, 2.9- catalytic denitration device partition I, 2.10- catalytic denitration device partition II, 2.11- catalytic denitration device Unit one row
The mouth of a river, 2.12- catalytic denitration device two, three unit discharge outlet, one unit spray equipment of 2.13- catalytic denitration device, 2.14- are urged
Change two unit spray equipment of denitrification apparatus, 2.15- catalytic denitration device outlet flue,
3- harmful substance absorbing and removing device, 3.1- harmful substance absorbing and removing device box, 3.2- harmful substance absorb
Removing means smoke inlet, 3.3- harmful substance absorbing and removing device Unit one, 3.4- harmful substance absorbing and removing device Unit two,
3.5- harmful substance absorbing and removing device Unit three, 3.6- harmful substance absorbing and removing device Unit one filter adsorption layer, 3.7-
Harmful substance absorbing and removing device Unit two filter adsorption layer, 3.8- harmful substance absorbing and removing device Unit three filtering absorption and
Dehydrating demisting layer, 3.9- harmful substance absorbing and removing device partition I, 3.10- harmful substance absorbing and removing device partition II,
One unit discharge outlet of 3.11- harmful substance absorbing and removing device, 3.12- harmful substance absorbing and removing device two, the draining of Unit three
Mouthful, one unit spray equipment of 3.13- harmful substance absorbing and removing device, the spray of 3.14- harmful substance absorbing and removing device Unit two
Leaching equipment, 3.15- harmful substance absorbing and removing device outlet flue,
4- cooling de-dusting cycle pond,
5- catalytic denitration liquid circulatory pool,
6- harmful substance absorbing and removing liquid circulatory pool.
Specific embodiment
With reference to the accompanying drawing, the present invention is further elaborated.
As shown in Figure 1 (and referring to Fig. 2-Fig. 4), sulphur purification system packet is consolidated in cement furnace coal-fired flue-gas strength denitration of the present invention
Include cooling and dedusting device 1, catalytic denitration device 2 and harmful substance absorbing and removing device 3.Coal-fired flue-gas is passed through cooling and dedusting device
Smoke inlet 1.2, cooling and dedusting device outlet flue 1.10 are connected to catalytic denitration device smoke inlet 2.2, catalytic denitration device smoke
Mouth 2.15 is connected with harmful substance absorbing and removing device smoke inlet 3.2, and the flue gas of purification goes out from harmful substance absorbing and removing device
Mouth 3.15 is discharged.The purification system further includes cooling de-dusting cycle pond 4, catalytic denitration liquid circulatory pool 5 and nuisance
Matter absorbing and removing liquid circulatory pool 6, respectively with the cooling and dedusting device 1, catalytic denitration device 2 and harmful substance absorbing and removing
Device 3 matches：The water outlet in cooling de-dusting cycle pond 4 is connected to the sprinkling equipment of cooling and dedusting device 1, cooling dedusting dress
Set 1 discharge outlet be connected to cooling de-dusting cycle pond 4 water inlet, formed water circulation；The water outlet of catalytic denitration liquid circulatory pool 5
Mouth is connected to the sprinkling equipment of catalytic denitration device 2, and the discharge outlet of catalytic denitration device 2 is connected to catalytic denitration liquid circulatory pool 5
Water inlet, formed denitration sulphur-fixing agent water solution cycle；The water outlet of harmful substance absorbing and removing liquid circulatory pool 6 is connected to nocuousness
The sprinkling equipment of material absorbing removing means 3, the discharge outlet of harmful substance absorbing and removing device 3, which is connected to harmful substance and absorbs, to be taken off
Except the water inlet of liquid circulatory pool 6, water circulation is formed.
The structure of the cooling and dedusting device 1 is as shown in Figure 2：
A cooling and dedusting device 1 generally cooling and dedusting device cabinet 1.1,1.1 phase of cooling and dedusting device cabinet
Cooling and dedusting device smoke inlet 1.2 and cooling and dedusting device outlet flue 1.10 are respectively arranged below with to two sides.In cooling dedusting
Erecting between device smoke inlet 1.2 and cooling and dedusting device outlet flue 1.10 has one layer of partition 1.9, will be separated into inside cabinet 1.1
Two spaces, the space positioned at 1.2 side of cooling and dedusting device smoke inlet are one unit 1.3 of cooling and dedusting device, are located at cooling
The space of 1.10 side of dust-extraction unit outlet flue is two unit 1.4 of cooling and dedusting device.The partition 1.9 only top there are
Venting channels then make to form an inverted U-shaped venting channels inside cooling and dedusting device 1.It is set at the top of one unit 1.3 of cooling and dedusting device
There is one unit spray equipment 1.7 of cooling and dedusting device, bottom sets one unit discharge outlet 1.11 of cooling and dedusting device.Cool down dedusting dress
It sets and is equipped with two unit spray equipment 1.8 of cooling and dedusting device at the top of two units 1.4, bottom sets the draining of cooling and dedusting device Unit two
Mouth 1.12.The one unit discharge outlet 1.11 of cooling and dedusting device is next to the position of partition 1.9, cooling and dedusting device
Two unit discharge outlet 1.12 are next to the position of cooling and dedusting device outlet flue 1.10.In cooling and dedusting device Unit one
In 1.3, level shelves one layer of cooling and dedusting device, one list between partition 1.9 above cooling and dedusting device smoke inlet 1.2
Member filtering adsorption layer 1.5, one unit 1.3 of cooling and dedusting device is apart from top to bottom, in two unit 1.4 of cooling and dedusting device, position
Level shelves one layer of cooling and dedusting device Unit two filtering suction between partition 1.9 above cooling and dedusting device outlet flue 1.10
Attached layer 1.6, two unit 1.4 of cooling and dedusting device is apart from top to bottom.
The one unit discharge outlet 1.11 of cooling and dedusting device and the connection of two unit discharge outlet 1.12 of cooling and dedusting device
To the water inlet in the cooling de-dusting cycle pond 4, the water outlet in cooling de-dusting cycle pond 4 is connected to cooling and dedusting device
1 two unit spray equipment 1.8 of one unit spray equipment 1.7 of cooling and dedusting device and cooling and dedusting device.Sprinkling equipment uses
It is common to use water.Cooling down de-dusting cycle pond 4 can be periodically using the purification of circulating sewage cleanser, and circulating sewage cleanser is time chlorine
The substances such as sour calcium, sulfamic acid or sym-closene.
The filtering adsorption layer is by a kind of or any number of in volcanic rock, titanium dioxide, aluminum oxide, rare earth oxide
Any proportion composition, there is catalysis, filtering suction-operated, while can also prevent, filtering smoke.
The structure of the catalytic denitration device 2 is as shown in Figure 3：
A catalytic denitration device 2 generally catalytic denitration device box 2.1, catalytic denitration device box 2.1 1
Side-lower is equipped with catalytic denitration device smoke inlet 2.2, and the top of the opposite other side is equipped with catalytic denitration device outlet flue 2.15.?
Erecting between catalytic denitration device smoke inlet 2.2 and catalytic denitration device outlet flue 2.15 has two pieces of partitions, and box house is separated
At three spaces, the partition by 2.2 side of catalytic denitration device smoke inlet is catalytic denitration device partition I 2.9, de- by being catalyzed
The partition of 2.15 side of nitre device outlet flue is catalytic denitration device partition II 2.10.Positioned at catalytic denitration device smoke inlet 2.2
The space of side is one unit 2.3 of catalytic denitration device, and the space positioned at 2.15 side of catalytic denitration device outlet flue is catalysis
Three unit 2.5 of denitrification apparatus, space in the middle are two unit 2.4 of catalytic denitration device.The catalytic denitration device partition I
2.9 there are venting channels above, and catalytic denitration device partition II 2.10 is then to make to be catalyzed there are venting channels in lower section
A S-shaped venting channels are formed inside denitrification apparatus 2.It is single that catalytic denitration device one is equipped at the top of one unit 2.3 of catalytic denitration device
First sprinkling equipment 2.13 is equipped with two unit spray equipment 2.14 of catalytic denitration device at the top of two unit 2.4 of catalytic denitration device.?
2.1 bottom of catalytic denitration device box is equipped with one unit discharge outlet 2.11 of catalytic denitration device and catalytic denitration device two, three is single
First discharge outlet 2.12, the one unit discharge outlet 2.11 of catalytic denitration device are next to catalytic denitration device partition I
The position below catalytic denitration device outlet flue 2.15 is arranged in 2.9 position, catalytic denitration device two, three unit discharge outlet 2.12
It sets.In one unit 2.3 of catalytic denitration device, it is located at 2.2 top of catalytic denitration device smoke inlet and catalytic denitration device partition I
Level shelves one layer of catalytic denitration device Unit one filtering adsorption layer 2.6 between 2.9, will be on one unit 2.3 of catalytic denitration device
Under separate, in two unit 2.4 of catalytic denitration device, be located at catalytic denitration device partition I 2.9 and catalytic denitration device partition
Level shelves one layer of catalytic denitration device Unit two filtering adsorption layer 2.7 between II 2.10, by catalytic denitration device Unit two
2.4 is apart from top to bottom, in three unit 2.5 of catalytic denitration device, is located at catalytic denitration device partition II 2.10 and catalytic denitration fills
It sets level between 2.15 lower section of outlet flue and shelves one layer of catalytic denitration device Unit three filtering adsorption layer 2.8, catalytic denitration is filled
It is apart from top to bottom to set three units 2.5.
The one unit discharge outlet 2.11 of catalytic denitration device and catalytic denitration device two, three unit discharge outlet 2.12 connect
It is connected to the water inlet of the catalytic denitration liquid circulatory pool 5, the water outlet of catalytic denitration liquid circulatory pool 5 is connected to catalytic denitration dress
Set two unit spray equipment 2.14 of a unit spray equipment 2.13 and catalytic denitration device.The denitration sulphur-fixing agent water of sprinkling equipment
Solution is configured to the strength denitration sulphur-fixing agent aqueous solution of 25000---30000ppm concentration for denitration sulphur-fixing agent in proportion with water.
The denitration sulphur-fixing agent by sodium chlorite, sodium hypochlorite, lithium perchlorate, sulfamic acid and sodium hydroxide match and
At with very strong oxidation catalysis, strength denitration, efficiency of sulfur retention effect.Wherein the parts by weight of each substance are：1 part of sodium chlorite,
47 parts of sodium hypochlorite, perchloric acid, 0.1 part, amino sulphur, 0.4 part, hydroxide, 0.5 part.
The filtering adsorption layer is by a kind of or any number of in volcanic rock, titanium dioxide, aluminum oxide, rare earth oxide
Any proportion composition, there is catalysis, filtering suction-operated, while can also prevent, filtering smoke.
The structure of the harmful substance absorbing and removing device 3 is as shown in Figure 4：
A harmful substance absorbing and removing device 3 generally harmful substance absorbing and removing device box 3.1, nuisance
3.1 1 side-lower of matter absorbing and removing device box is equipped with harmful substance absorbing and removing device smoke inlet 3.2, and the other side is upper relatively
Side is equipped with harmful substance absorbing and removing device outlet flue 3.15.In harmful substance absorbing and removing device smoke inlet 3.2 and nuisance
Erecting between matter absorbing and removing device outlet flue 3.15 has two pieces of partitions, and box house is separated into three spaces, leans on harmful substance
The partition of 3.2 side of absorbing and removing device smoke inlet is harmful substance absorbing and removing device partition I 3.9, is absorbed by harmful substance
The partition of 3.15 side of removing means outlet flue is harmful substance absorbing and removing device partition II 3.10.It is inhaled positioned at harmful substance
The space for receiving 3.2 side of removing means smoke inlet is one unit 3.3 of harmful substance absorbing and removing device, is located at harmful substance and absorbs
The space of 3.15 side of removing means outlet flue is three unit 3.5 of harmful substance absorbing and removing device, and space in the middle is nocuousness
Two unit 3.4 of material absorbing removing means.There are ventilations to lead to above by the harmful substance absorbing and removing device partition I 3.9
Road, and harmful substance absorbing and removing device partition II 3.10 is that there are venting channels in lower section, then makes harmful substance absorbing and removing
A S-shaped venting channels are formed inside device 3.Harmful substance is equipped at the top of one unit 3.3 of harmful substance absorbing and removing device to absorb
One unit spray equipment 3.13 of removing means is equipped with harmful substance at the top of two unit 3.4 of harmful substance absorbing and removing device and absorbs
Two unit spray equipment 3.14 of removing means.It is absorbed in 3.1 bottom of harmful substance absorbing and removing device box equipped with harmful substance
One unit discharge outlet 3.11 of removing means and harmful substance absorbing and removing device two, three unit discharge outlet 3.12, the nocuousness
One unit discharge outlet 3.11 of material absorbing removing means is next to the position of harmful substance absorbing and removing device partition I 3.9
It sets, harmful substance absorbing and removing device two, three unit discharge outlet 3.12 are arranged in harmful substance absorbing and removing device outlet flue
The position of 3.15 lower sections.In one unit 3.3 of harmful substance absorbing and removing device, it is located at harmful substance absorbing and removing device into cigarette
Level shelves one layer of harmful substance absorbing and removing device between 3.2 top of mouth and harmful substance absorbing and removing device partition I 3.9
Unit one filters adsorption layer 3.6, and one unit 3.3 of harmful substance absorbing and removing device is apart from top to bottom, absorbs in harmful substance de-
Except in two unit 3.4 of device, it is located at harmful substance absorbing and removing device partition I 3.9 and harmful substance absorbing and removing device partition
Level shelves two layers of harmful substance absorbing and removing device Unit two filtering adsorption layer 3.7 between II 3.10, and harmful substance is absorbed
Two unit 3.4 of removing means is apart from top to bottom, in three unit 3.5 of harmful substance absorbing and removing device, is located at harmful substance and absorbs
Level is shelved between 3.15 lower section removing means partition II 3.10 and harmful substance absorbing and removing device outlet flue is filtered by two layers
Harmful substance absorbing and removing device Unit three filtering of adsorption layer and one layer of dehydrating demisting layer composition is adsorbed and dehydrating demisting layer
3.8, three unit 3.5 of harmful substance absorbing and removing device is apart from top to bottom.
The one unit discharge outlet 3.11 of harmful substance absorbing and removing device and harmful substance absorbing and removing device two, three
Unit discharge outlet 3.12 is connected to the water inlet of the harmful substance absorbing and removing liquid circulatory pool 6, harmful substance absorbing and removing
The water outlet of liquid circulatory pool 6 is connected to one unit spray equipment 3.13 of harmful substance absorbing and removing device and harmful substance is absorbed and taken off
Except two unit spray equipment 3.14 of device.The harmful substance absorbing and removing aqueous solution of spray is sodium hydroxide and/or hypochlorous acid
Calcium and water are configured to the harmful substance absorbing and removing aqueous solution that ph value is 12-14.
The filtering adsorption layer is by a kind of or any number of in volcanic rock, titanium dioxide, aluminum oxide, rare earth oxide
Any proportion composition, there is catalysis, filtering suction-operated, while can also prevent, filtering smoke.Dehydrating demisting layer can be used
The product of Hebei Hengshui demister factory.
Consolidate sulphur purification process process to cement furnace coal-fired flue-gas strength denitration of the present invention below to explain：
The coal-fired flue-gas of cement furnace discharge enters cooling dedusting from cooling and dedusting device smoke inlet 1.2 after deduster
Device 1 is leaked out with U-shaped, is adsorbed by the filtering of cooling and dedusting device Unit one filtering adsorption layer 1.5, into cooling dedusting dress
The upper space for setting a unit 1.3, the atomizing spray purifying and cooling through one unit spray equipment 1.7 of cooling and dedusting device enter
The upper space of two unit 1.4 of cooling and dedusting device, then the drop of the atomizing spray through two unit spray equipment 1.8 of cooling and dedusting device
The filtering absorption of temperature and cooling and dedusting device Unit two filtering adsorption layer 1.6, soot dust granule object are adsorbed by filtering, flue-gas temperature drop
To 50-60 DEG C, the flue gas of preliminary purification is discharged except cooling and dedusting device 1 from cooling and dedusting device outlet flue 1.10.Cooling down
During 1 purifying smoke of dust-extraction unit, the water that sprinkling equipment sprays out flows into cooling de-dusting cycle pond 4 by discharge outlet,
The water outlet in cooling de-dusting cycle pond 4 is supplied to sprinkling equipment again, forms water circulation.
The flue gas that cooling and dedusting device 1 is discharged enters catalytic denitration device 2 from catalytic denitration device smoke inlet 2.2, with S type
It leaks out, is adsorbed by the filtering of catalytic denitration device Unit one filtering adsorption layer 2.6, into one unit 2.3 of catalytic denitration device
Upper space, through one unit spray equipment 2.13 of catalytic denitration device atomizing spray denitration purification, into catalytic denitration fill
Set the upper space of two units 2.4, then through two unit spray equipment 2.14 of catalytic denitration device atomizing spray denitration purification and
Catalytic denitration device Unit two filters the filtering absorption of adsorption layer 2.7, and flue gas enters the lower layer of three unit 2.5 of catalytic denitration device
Space, flue gas is upward through catalytic denitration device Unit three filtering adsorption layer 2.8 again, after soot dust granule object is adsorbed by filtering again,
The flue gas for consolidating sulphur purification through denitration is discharged except catalytic denitration device 2 from catalytic denitration device outlet flue 2.15.In purification denitration
During flue gas, denitration sulphur-fixing agent aqueous solution and the nitrogen oxides in flue gas of atomizing spray are come into full contact with, and are sufficiently reacted, point
Solution generates the nitrogen oxides of the high-valence states such as nontoxic nitrogen and nitrogen dioxide, nitrogen peroxide, dinitrogen pentoxide, nontoxic nitrogen
It is discharged, the nitrogen oxides of high-valence state, is entering in harmful substance absorbing and removing device, by denitration sulphur-fixing agent aqueous solution with flue gas
Trace metal ion absorb, purification.The denitration sulphur-fixing agent aqueous solution that sprinkling equipment sprays out flows into catalysis by discharge outlet and takes off
Nitre liquid circulatory pool 5, the water outlet of catalytic denitration liquid circulatory pool 5 are supplied to sprinkling equipment again, form denitration sulphur-fixing agent water solution cycle.
The flue gas that catalytic denitration device 2 is discharged enters harmful substance from harmful substance absorbing and removing device smoke inlet 3.2 and inhales
Removing means 3 is received, is leaked out with S type, is adsorbed by the filtering of harmful substance absorbing and removing device Unit one filtering adsorption layer 3.6,
Into the upper space of one unit 3.3 of harmful substance absorbing and removing device, through one unit spray of harmful substance absorbing and removing device
3.13 atomizing spray of equipment purification, into the upper space of two unit 3.4 of harmful substance absorbing and removing device, then through harmful substance
The atomizing spray of two unit spray equipment 3.14 of absorbing and removing device purifies and the filtering of harmful substance absorbing and removing device Unit two
The filtering of adsorption layer 3.7 is adsorbed, and flue gas enters the lower layer space of three unit 3.5 of harmful substance absorbing and removing device, flue gas again to
On across harmful substance absorbing and removing device Unit three filter absorption and dehydrating demisting layer 3.8, soot dust granule object again by filtering inhale
Attached and after being dehydrated demisting, the flue gas for being finally absorbed the purification for being stripped of harmful substance goes out from harmful substance absorbing and removing device
Mouth 3.15 is discharged except harmful substance absorbing and removing device 3, into chimney, completes cement furnace coal-fired flue-gas strength denitration
Gu sulphur purification process.During harmful substance absorbing and removing device 3 purifies denitration flue gas, the harmful substance of atomizing spray is inhaled
It receives the harmful substances such as removing aqueous solution and high-valence state nitrogen oxides, sulfur dioxide in flue gas to come into full contact with, sufficiently react, absorption
Remove the nitrogen oxides and sulfur dioxide of high-valence state, purifying smoke.The harmful substance absorbing and removing that sprinkling equipment sprays out is water-soluble
Liquid flows into harmful substance absorbing and removing liquid circulatory pool 6 by discharge outlet, and the water outlet of harmful substance absorbing and removing liquid circulatory pool 6 mentions again
Sprinkling equipment is supplied, harmful material absorbing is formed and removes water solution cycle.
Nitrogen oxides, sulfur dioxide, soot dust granule object in flue gas reach after multistage catalytic, absorbing and removing, purified treatment
Mark discharge.The timely deodorization purification of recycling waste water, purifies water circulation use, precipitating sludge, being added can burning aid coal saving in coal.
Cement furnace flue gas is after the inventive technique process, nitrogen oxides, sulfur dioxide, soot dust granule object and metal
Pollutant can reach limit value as defined in environmental protection administration.
Claims (10)
1. sulphur purification system is consolidated in a kind of cement furnace coal-fired flue-gas strength denitration, it is characterised in that：Including cooling and dedusting device, urge
Change denitrification apparatus and harmful substance absorbing and removing device；Coal-fired flue-gas is passed through cooling and dedusting device smoke inlet, cooling and dedusting device
Outlet flue is connected to catalytic denitration device smoke inlet, catalytic denitration device outlet flue and harmful substance absorbing and removing device smoke inlet
It is connected, the flue gas of purification is discharged from harmful substance absorbing and removing device outlet flue.
2. purification system according to claim 1, it is characterised in that：The purification system further includes cooling de-dusting cycle
Pond, catalytic denitration liquid circulatory pool and harmful substance absorbing and removing liquid circulatory pool, respectively with the cooling and dedusting device, catalysis
Denitrification apparatus and harmful substance absorbing and removing device match：The water outlet in cooling de-dusting cycle pond is connected to cooling dedusting dress
The sprinkling equipment set, the discharge outlet of cooling and dedusting device are connected to the water inlet in cooling de-dusting cycle pond, form water circulation；It urges
The water outlet for changing denitration liquid circulatory pool is connected to the sprinkling equipment of catalytic denitration device, and the discharge outlet of catalytic denitration device is connected to
The water inlet of catalytic denitration liquid circulatory pool forms denitration sulphur-fixing agent water solution cycle；Harmful substance absorbing and removing liquid circulatory pool
Water outlet is connected to the sprinkling equipment of harmful substance absorbing and removing device, and the discharge outlet of harmful substance absorbing and removing device is connected to
The water inlet of harmful substance absorbing and removing liquid circulatory pool forms harmful material absorbing and removes water solution cycle.
3. purification system according to claim 1, it is characterised in that：The cooling of the cooling and dedusting device generally one removes
Dirt device box, cooling and dedusting device cabinet opposite sides are respectively arranged below with cooling and dedusting device smoke inlet and cooling dedusting
Device outlet flue；Erecting between cooling and dedusting device smoke inlet and cooling and dedusting device outlet flue has one layer of partition, will be in cabinet
Part is divided into two spaces, and the space positioned at cooling and dedusting device smoke inlet side is cooling and dedusting device Unit one, is located at drop
The space of warm dust-extraction unit outlet flue side is cooling and dedusting device Unit two, and only on top, there are ventilations to lead to for the partition
Road then makes to form an inverted U-shaped venting channels inside cooling and dedusting device；Cooling and dedusting device Unit one and cooling and dedusting device two
It is equipped with cooling and dedusting device sprinkling equipment at the top of unit, bottom is all provided with cooling and dedusting device discharge outlet；In cooling and dedusting device
Equal level shelves one layer of cooling and dedusting device filtering adsorption layer in Unit one and cooling and dedusting device Unit two.
4. purification system according to claim 1, it is characterised in that：The catalysis of catalytic denitration device generally one is de-
Nitre device box, one side-lower of catalytic denitration device box are equipped with catalytic denitration device smoke inlet, set above the opposite other side
There is catalytic denitration device outlet flue；Between catalytic denitration device smoke inlet and catalytic denitration device outlet flue erect have two pieces every
Box house is separated into three spaces by plate, and the space positioned at catalytic denitration device smoke inlet side is catalytic denitration device one
Unit, the space positioned at catalytic denitration device outlet flue side are catalytic denitration device Unit three, and space in the middle is that catalysis is de-
Nitre device Unit two；There are venting channels above for partition by catalytic denitration device smoke inlet side, lean on catalytic denitration device
There are venting channels in lower section for the partition of outlet flue side, then make to form a S-shaped venting channels inside catalytic denitration device；Catalysis
It is equipped with catalytic denitration device sprinkling equipment at the top of denitrification apparatus Unit one and at the top of catalytic denitration device Unit two, it is de- in catalysis
Nitre device box bottom is equipped with one unit discharge outlet of catalytic denitration device and catalytic denitration device two, three unit discharge outlet；It is urging
In three units for changing denitrification apparatus, equal level shelves one layer of catalytic denitration device filtering adsorption layer.
5. purification system according to claim 1, it is characterised in that：The harmful substance absorbing and removing device is generally
One harmful substance absorbing and removing device box, one side-lower of harmful substance absorbing and removing device box, which is equipped with harmful substance and absorbs, to be taken off
Except device smoke inlet, the top of the opposite other side is equipped with harmful substance absorbing and removing device outlet flue；It is absorbed in harmful substance de-
There are two pieces of partitions except erecting between device smoke inlet and harmful substance absorbing and removing device outlet flue, box house is separated into three
Space, the space positioned at harmful substance absorbing and removing device smoke inlet side are harmful substance absorbing and removing device Unit one, position
In the space of harmful substance absorbing and removing device outlet flue side be harmful substance absorbing and removing device Unit three, space in the middle
For harmful substance absorbing and removing device Unit two；By harmful substance absorbing and removing device smoke inlet side partition above there are
Venting channels, there are venting channels in lower section for the partition by harmful substance absorbing and removing device outlet flue side, then make nuisance
A S-shaped venting channels are formed inside matter absorbing and removing device；Harmful substance absorbing and removing device Unit one top and harmful substance
It is equipped with harmful substance absorbing and removing device sprinkling equipment at the top of absorbing and removing device Unit two, is filled in harmful substance absorbing and removing
The bottom of box is set equipped with one unit discharge outlet of harmful substance absorbing and removing device and harmful substance absorbing and removing device two, Unit three
Discharge outlet；Level shelves one layer of one unit mistake of harmful substance absorbing and removing device in harmful substance absorbing and removing device Unit one
Adsorption layer is filtered, in harmful substance absorbing and removing device Unit two, it is single that level shelves two layers of harmful substance absorbing and removing device two
Member filtering adsorption layer, in harmful substance absorbing and removing device Unit three, level is shelved de- by two layers of filtering adsorption layer and one layer
Harmful substance absorbing and removing device Unit three filtering absorption of water demisting layer composition and dehydrating demisting layer.
6. according to purification system described in claim 3,4 or 5, it is characterised in that：The filtering adsorption layer is by volcanic rock, two
Titanium oxide, aluminum oxide, a kind of or any number of any proportion forms in rare earth oxide.
7. purification system according to claim 2 or 4, it is characterised in that：In the catalytic denitration device, atomizing spray
The denitration sulphur-fixing agent aqueous solution of equipment is configured to the de- of 25000---30000ppm concentration for denitration sulphur-fixing agent and water in proportion
Nitre sulphur-fixing agent aqueous solution；The denitration sulphur-fixing agent is by sodium chlorite, sodium hypochlorite, lithium perchlorate, sulfamic acid and hydroxide
Sodium matches, wherein the parts by weight of each substance are：1 part of sodium chlorite, 47 parts of sodium hypochlorite, perchloric acid, 0.1 part, amino sulphur,
0.4 part, hydroxide, 0.5 part.
8. purification system according to claim 2 or 5, it is characterised in that：In the harmful substance absorbing and removing device,
The harmful substance absorbing and removing aqueous solution of spray, be sodium hydroxide and/or calcium hypochlorite and water to be configured to ph value be 12-14's
Harmful substance absorbing and removing aqueous solution.
9. sulphur purification process is consolidated in a kind of cement furnace coal-fired flue-gas strength denitration, purification process is：
The coal-fired flue-gas of cement furnace discharge, enters cooling and dedusting device from cooling and dedusting device smoke inlet after deduster, with U
Type leaks out, the atomizing spray purifying and cooling of filtering absorption and two sprinkling equipments by filtering adsorption layer twice, soot dust granule
Object is cleaned and is adsorbed by filtering, and flue-gas temperature drops to 50-60 DEG C, and the flue gas of preliminary purification is arranged from cooling and dedusting device outlet flue
Out except cooling and dedusting device；
The flue gas of cooling and dedusting device discharge enters catalytic denitration device from catalytic denitration device smoke inlet, is leaked out with S type, passes through
The filtering absorption and the atomizing spray denitration of two sprinkling equipments purification, soot dust granule object for filtering adsorption layer three times consolidate sulphur by denitration
It purifies and is adsorbed by filtering, is discharged except catalytic denitration device from catalytic denitration device outlet flue；In the mistake of purification denitration flue gas
Cheng Zhong, denitration sulphur-fixing agent aqueous solution and the nitrogen oxides in flue gas of atomizing spray come into full contact with, and sufficiently react, and decompose and generate nothing
The nitrogen oxides of the high-valence states such as the nitrogen and nitrogen dioxide, nitrogen peroxide, dinitrogen pentoxide of poison, nontoxic nitrogen are arranged with flue gas
Out, the nitrogen oxides of high-valence state is entering in harmful substance absorbing and removing device, by the micro gold in denitration sulphur-fixing agent aqueous solution
Belong to Ions Absorption, purification；
The flue gas of catalytic denitration device discharge enters harmful substance absorbing and removing dress from harmful substance absorbing and removing device smoke inlet
It sets, is leaked out with S type, by filtering the filtering absorption of adsorption layer and the atomizing spray absorbing and removing nocuousness of two sprinkling equipments three times
Substance, and the dehydrating demisting through dehydrating demisting layer are finally absorbed after soot dust granule object is adsorbed by filtering again and is dehydrated demisting
The flue gas for being stripped of the purification of harmful substance is discharged harmful substance and absorbs from harmful substance absorbing and removing device outlet flue 3.15 to be taken off
In addition to device 3, into chimney, completes the strength denitration of cement furnace coal-fired flue-gas and consolidate sulphur purification process；It is inhaled in harmful substance
During receiving removing means purification denitration flue gas, the harmful substance absorbing and removing aqueous solution of atomizing spray and the high price in flue gas
The harmful substances such as state nitrogen oxides, sulfur dioxide come into full contact with, and sufficiently react, the nitrogen oxides and dioxy of absorbing and removing high-valence state
Change sulphur, purifying smoke.
10. sulphur purification process is consolidated in flue gas strength denitration according to claim 9, it is characterised in that：
During cooling and dedusting device purifying smoke, the water that cooling and dedusting device sprinkling equipment sprays out passes through discharge outlet stream
Enter to cool down de-dusting cycle pond, and the water outlet in cooling de-dusting cycle pond is supplied to cooling and dedusting device sprinkling equipment again, forms water
Circulation；
During catalytic denitration device purifying smoke, the denitration sulphur-fixing agent that catalytic denitration device sprinkling equipment sprays out is water-soluble
Liquid flows into catalytic denitration liquid circulatory pool by discharge outlet, and the water outlet of catalytic denitration liquid circulatory pool is supplied to the spray of catalytic denitration device again
Equipment is drenched, denitration sulphur-fixing agent water solution cycle is formed；
During harmful substance absorbing and removing device purifying smoke, harmful substance absorbing and removing device sprinkling equipment is sprayed out
Harmful substance absorbing and removing aqueous solution harmful substance absorbing and removing liquid circulatory pool is flowed by discharge outlet, harmful substance absorbs de-
Except the water outlet of liquid circulatory pool is supplied to harmful substance absorbing and removing device sprinkling equipment again, it is water-soluble to form harmful material absorbing removing
Liquid circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810854916.1A CN108889105A (en) | 2018-07-31 | 2018-07-31 | Sulphur purification system and its purification process are consolidated in the strength denitration of cement furnace coal-fired flue-gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810854916.1A CN108889105A (en) | 2018-07-31 | 2018-07-31 | Sulphur purification system and its purification process are consolidated in the strength denitration of cement furnace coal-fired flue-gas |
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| CN108889105A true CN108889105A (en) | 2018-11-27 |
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