CN208082173U - The processing system of activated coke method coke oven flue gas desulphurization denitration acid vapour is handled with system for preparing sulfuric acid - Google Patents
The processing system of activated coke method coke oven flue gas desulphurization denitration acid vapour is handled with system for preparing sulfuric acid Download PDFInfo
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- CN208082173U CN208082173U CN201721763080.1U CN201721763080U CN208082173U CN 208082173 U CN208082173 U CN 208082173U CN 201721763080 U CN201721763080 U CN 201721763080U CN 208082173 U CN208082173 U CN 208082173U
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Abstract
The utility model discloses a kind of processing systems handling activated coke method coke oven flue gas desulphurization denitration acid vapour with system for preparing sulfuric acid, provide and utilize the original H in coke-oven plant2S acidity steams (are substantially free of NH3) Sulphuric acid process unit come handle activated coke method coke oven flue gas desulphurization denitration generation sour vapour processing system, this system makes full use of original appliance arrangement, only need the conveying equipment and cleaner of the sour vapour of increase activated coke method coke oven flue gas desulphurization denitration generation, do not increase other energy and equipment additionally, the pollutant in the sour ammonia steam of coke-stove gas and the sour vapour of activated coke method coke oven flue gas desulphurization denitration generation can be converted in chemical products-sulfuric acid of high added value, it is simple for process reasonable, investment cost is low, and without waste water, the waste discharges such as waste residue, with unexpected technique effect.
Description
Technical field
The utility model belongs to system for preparing sulfuric acid field, and in particular to a kind of burnt with system for preparing sulfuric acid processing activated coke method
The processing system of kiln gas desulphurization denitration acid vapour.
Background technology
Coke oven is one of the equipment that atmosphere pollution most serious is caused in metallurgy industry, and the pollutant component of coke oven discharge is multiple
It is miscellaneous, contain nitrogen oxides (NOx), sulfur dioxide, carbon monoxide, carbon dioxide, hydrogen sulfide, hydrogen cyanide, residual ammonia, phenol and coal
Dirt, tar etc..From 1 day January in 2015, the pollutant emission of coke oven flue gas executes GB16171-2012《Coking chemistry industry is dirty
Contaminate object discharge standard》Regulation, to the SO of coke oven flue gas2And NOXDischarge propose strict requirements.Exploitation both at home and abroad at present
Flue gas desulfurization and denitrification technology it is very much, wherein activated coke method coke oven flue gas desulphurization denitration treatment process is widely used.
Activated coke method (being also known as activated carbon method) is the absorption property using activated coke itself, to SO2And NOXCarry out physics
And chemisorption, to reach a kind of method of desulfurization off sulfide effect.When for flue gases of cock oven desulphurization denitration, using waste heat
Thermal energy in boiler recovered flue gas first, flue gas are passed through after being cooled down in activated coke adsorptive purifier.At its desulphurization denitration
The principle of science and engineering skill is：Under the effect of the catalyst, in desulphurization denitration purifying column, the SO in flue gas2、O2、H2O molecules are lived
Property burnt (desulfurizing agent) capture and generate sulfuric acid, the NO in flue gasXIn NH3Reduction under react and generate nontoxic and pollution-free N2With
H2O, coke oven flue gas are purified qualified discharge.The activated coke (desulfurizing agent) of sulfuric acid has been adsorbed in regenerator in certain temperature
Lower desorption and regeneration, i.e., sulfuric acid and C reaction generations SO in regenerator2And H2O and CO2, current technique is will to contain SO2Acidity
Gas is sent to sulphur ammonium system production sulphur ammonium, and the activated coke (desulfurizing agent) after regeneration is recycled in purifying.Specific technique is shown in
Fig. 1 activated coke method coke oven flue gas desulfurizing and denitrifying process flows and processing system schematic diagram.
Contain SO in existing activated coke method coke oven flue gas desulfurizing and denitrifying process2Sour gas to sulphur ammonium system production sulphur ammonium
This technique, under conditions of no oxidation, SO2And NH3Generate ammonium sulfite (NH4)2SO3, rather than generate ammonium sulfate
(NH4)2SO4, ammonium sulfate product quality can be influenced in this way, and Process configuration is nor quite reasonable.
Utility model content
The utility model aim is to utilize the original H in coke-oven plant2S acidity steams (are substantially free of NH3) Sulphuric acid process unit
Come handle the generation of activated coke method coke oven flue gas desulphurization denitration sour vapour processing system, this system makes full use of original device to set
It is standby, it is only necessary to which that the conveying equipment and cleaner for increasing the sour vapour of activated coke method coke oven flue gas desulphurization denitration generation do not increase additionally
Add other energy and equipment, you can by the original H of coke-stove gas2S acidity steam and activated coke method coke oven flue gas desulphurization denitration generate
Sour vapour in pollutant be converted into chemical products-sulfuric acid of high added value, the simple system is reasonable, and investment cost is low, and nothing
The waste discharges such as waste water, waste residue have unexpected technique effect.
To achieve the above object, the technical solution adopted in the utility model is as follows：
The utility model discloses a kind of activated coke method coke oven flue gas desulphurization denitration acid vapour is handled with system for preparing sulfuric acid
Processing system, the system comprises sour vapour conveying equipment, dust removal by filtration dehydration equipment, system for preparing sulfuric acid, system for preparing sulfuric acid chimney,
It is characterized in that：The acid gas conveying equipment and the sour steam pipe road of activated coke method coke oven flue gas desulphurization denitration regenerator outlet connect
It connects, sour vapour conveying equipment outlet is connect with dust removal by filtration dehydration equipment again, the outlet of dust removal by filtration dehydration equipment and system for preparing sulfuric acid
Connection, system for preparing sulfuric acid outlet are connect with system for preparing sulfuric acid chimney.
Preferably, it is air blower to state sour vapour conveying equipment.
Preferably, the system for preparing sulfuric acid is processing coke oven gas desulfurization regeneration unit containing H2The acid steam of S is given birth to
Produce original process unit of sulfuric acid.
Preferably, the system for preparing sulfuric acid chimney is system for preparing sulfuric acid exhaust emissions chimney.
Preferably, processing system such as Fig. 2 of activated coke method coke oven flue gas desulphurization denitration acid vapour is handled with system for preparing sulfuric acid
It is shown.
System for preparing sulfuric acid be for handle coke oven gas desulfurization regeneration unit come contain H2The technique of the acid steam of S fills
It sets.H2S acidity steams burn in incinerator generates SO2, SO2It is converted in system for preparing sulfuric acid reactor under the action of catalyst
At SO3, SO3With H2O reactions generate sulfuric acid.Its reaction equation is：
H2S+3/2O2→SO2+H2O
SO2+1/2O2→SO3
SO3+H2O→H2SO4
The purpose of this utility model is to produce the process unit of sulfuric acid with coke-oven plant's acidity steam to handle activated coke method coke
The sour vapour that kiln gas desulphurization denitration generates.
The group of the sour vapour of activated coke method coke oven flue gas desulphurization denitration regenerator outlet becomes：SO2Content 5%~30%, contains
Dirt 2g/Nm3Left and right, water content 10%~40%, remaining gas are nitrogen and carbon dioxide, and sour vapour is temperature 150 DEG C~350
℃。
In this way, simply one can be increased on the sour steam pipe road of activated coke method coke oven flue gas desulphurization denitration regenerator outlet
The conveying equipment of platform acid vapour, regenerated acid vapour using filtering dedusting dehydration equipment (to avoid sour vapour carry secretly dust block system
Catalyst etc. in sulfate system reactor), it is sent into system for preparing sulfuric acid, contains H with what coke oven gas desulfurization regeneration unit came2S's
The SO that acid steam burning generates2Together to being converted to SO in system for preparing sulfuric acid reactor3, SO3With H2O reactions generate sulfuric acid.This
The tail gas that method generates is together with the tail gas that Sulphuric acid generates to row outside acid making system chimney.
Description of the drawings
The utility model is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is activated coke method coke oven flue gas desulfurizing and denitrifying process flow and processing system schematic diagram
Fig. 2 is that system for preparing sulfuric acid handles the technological process of activated coke method coke oven flue gas desulphurization denitration acid vapour and processing system is shown
It is intended to
In Fig. 2：
1) waste heat utilization equipment of waste heat boiler --- coke oven flue gas；
2) blowdown stack of chimney --- coke oven flue gas；
3) purifying column --- the purifier of coke oven flue gas activated coke method desulphurization denitration；
4) regenerator --- SO in removal activity coke2And H2O and CO2Regenerating unit；
5) air blower --- the equipment of conveying regeneration vapour；
6) filtering dedusting dehydration equipment --- the equipment of filtering, dedusting and the dehydration of purifying regeneration vapour；
7) system for preparing sulfuric acid --- contain H by what sulphur in coke oven gas regeneration unit came2The acid steam burning of S generates SO2Again
It is converted into the production system of sulfuric acid；
8) system for preparing sulfuric acid chimney --- system for preparing sulfuric acid exhaust emissions chimney.
Specific implementation mode
The utility model is further illustrated with reference to embodiment.
Embodiment 1
As shown in Figure 1, Fig. 1 provides activated coke method coke oven flue gas desulfurizing and denitrifying process flow diagram, first, using remaining
Heat boiler recycles coke oven flue gas SO2And NOXIn thermal energy, flue gas is passed through after being cooled down in activated coke adsorption cleaning tower, in desulfurization
In denitration purifying column, the SO in flue gas2、O2、H2O molecules are captured by activated coke (desulfurizing agent) and generate sulfuric acid, the NO in flue gasX
In NH3Reduction under react and generate nontoxic and pollution-free N2And H2O, coke oven flue gas are purified qualified discharge.Sulfuric acid is adsorbed
Activated coke (desulfurizing agent) in regenerator desorption and regeneration at a certain temperature, i.e., in regenerator sulfuric acid and C reactions generate
SO2And H2O and CO2, SO will be contained2Sour gas send to sulphur ammonium system production sulphur ammonium, the activated coke (desulfurizing agent) after regeneration is to net
It is recycled in changing.Since sulphur ammonium system is under conditions of no oxidation, SO2And NH3Generate ammonium sulfite (NH4)2SO3, without
It is to generate ammonium sulfate (NH4)2SO4, affect ammonium sulfate product quality.
Embodiment 2
As shown in Fig. 2, Fig. 2 provides the technique stream of system for preparing sulfuric acid processing activated coke method coke oven flue gas desulphurization denitration acid vapour
Journey and processing system schematic diagram, difference lies in 1 activated coke method coke oven flue gas desulphurization denitration regenerators of embodiment with embodiment 1
The SO of outlet2And H2O and CO2Regeneration vapour acid steam pipe road be no longer passed through sulphur ammonium system, a sour vapour will be increased on the acid steam pipe road
Conveying equipment, activated coke method coke oven flue gas desulphurization denitration regenerated acid vapour is delivered to next device；Increase after conveying equipment
One dust removal by filtration dehydration equipment is filtered to remove the dust and moisture of the entrainment of regenerated acid vapour, and the dust to avoid the entrainment of sour vapour is stifled
Fill in the catalyst etc. in system for preparing sulfuric acid reactor；Increase a system for preparing sulfuric acid, the system after dust removal by filtration dehydration equipment
Be for handle coke oven gas desulfurization regeneration unit come contain H2Original process unit of the acid steam production sulfuric acid of S, filtering
Remove the SO in the regenerated acid vapour of dust and moisture2Into the system for preparing sulfuric acid, come with processing coke oven gas desulfurization regeneration unit
Contain H2The SO that the acid steam burning of S generates2Together to being converted to SO in system for preparing sulfuric acid reactor3, SO3With H2O reaction lifes
At sulfuric acid, connection acid making system chimney in system for preparing sulfuric acid outlet will be arranged outside tail gas to acid making system chimney.Activated coke method coke oven cigarette
The group of the sour vapour of desulfurization denitration regenerator outlet becomes：SO2Content 5%~30%, dust-laden 2g/Nm3Left and right, water content 10%
~40%, remaining gas is nitrogen and carbon dioxide, and sour vapour is 150 DEG C~350 DEG C of temperature.The system for preparing sulfuric acid is used for handling
What coke oven gas desulfurization regeneration unit came contains H2The acid steam of S is free of NH3。
Above content is only the citing done to the utility model and explanation, affiliated those skilled in the art couple
Various modifications may be made or supplement for described specific embodiment, design without departing from the utility model or surmounts present claims
Range defined in book, all should belong to the protection range of the utility model.
Claims (4)
1. a kind of processing system handling activated coke method coke oven flue gas desulphurization denitration acid vapour with system for preparing sulfuric acid, the system packet
Include sour vapour conveying equipment, dust removal by filtration dehydration equipment, system for preparing sulfuric acid, system for preparing sulfuric acid chimney, it is characterised in that：The acid vapour
Conveying equipment is connect with the sour steam pipe road that activated coke method coke oven flue gas desulphurization denitration regenerator exports, and sour vapour conveying equipment outlet is again
Connect with dust removal by filtration dehydration equipment, dust removal by filtration dehydration equipment outlet connect with system for preparing sulfuric acid, system for preparing sulfuric acid export and
System for preparing sulfuric acid chimney connects.
2. processing system as described in claim 1, the acid vapour conveying equipment is air blower.
3. processing system as described in claim 1, the system for preparing sulfuric acid is to handle what coke oven gas desulfurization regeneration unit came
Containing H2Original process unit of the acid steam production sulfuric acid of S.
4. processing system as described in claim 1, the system for preparing sulfuric acid chimney is system for preparing sulfuric acid exhaust emissions chimney.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721763080.1U CN208082173U (en) | 2017-12-15 | 2017-12-15 | The processing system of activated coke method coke oven flue gas desulphurization denitration acid vapour is handled with system for preparing sulfuric acid |
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| CN201721763080.1U CN208082173U (en) | 2017-12-15 | 2017-12-15 | The processing system of activated coke method coke oven flue gas desulphurization denitration acid vapour is handled with system for preparing sulfuric acid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107890755A (en) * | 2017-12-15 | 2018-04-10 | 马鞍山钢铁股份有限公司 | With the production technology and processing system of system for preparing sulfuric acid processing activated coke method coke oven flue gas desulphurization denitration acid vapour |
| CN114653339A (en) * | 2022-03-22 | 2022-06-24 | 马鞍山钢铁股份有限公司 | Preparation method of modified activated coke for desulfurization and denitrification |
-
2017
- 2017-12-15 CN CN201721763080.1U patent/CN208082173U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107890755A (en) * | 2017-12-15 | 2018-04-10 | 马鞍山钢铁股份有限公司 | With the production technology and processing system of system for preparing sulfuric acid processing activated coke method coke oven flue gas desulphurization denitration acid vapour |
| CN114653339A (en) * | 2022-03-22 | 2022-06-24 | 马鞍山钢铁股份有限公司 | Preparation method of modified activated coke for desulfurization and denitrification |
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