CN103055656B - Method for performing mercury removal treatment on boiler flue gas by utilizing coal ash-based mercury removal adsorbent - Google Patents

Method for performing mercury removal treatment on boiler flue gas by utilizing coal ash-based mercury removal adsorbent Download PDF

Info

Publication number
CN103055656B
CN103055656B CN201310045192.3A CN201310045192A CN103055656B CN 103055656 B CN103055656 B CN 103055656B CN 201310045192 A CN201310045192 A CN 201310045192A CN 103055656 B CN103055656 B CN 103055656B
Authority
CN
China
Prior art keywords
mercury
coal ash
adsorbing agent
absorption
demercuration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201310045192.3A
Other languages
Chinese (zh)
Other versions
CN103055656A (en
Inventor
高正阳
郑双清
钟俊
于航
殷立宝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
North China Electric Power University
Original Assignee
North China Electric Power University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by North China Electric Power University filed Critical North China Electric Power University
Priority to CN201310045192.3A priority Critical patent/CN103055656B/en
Publication of CN103055656A publication Critical patent/CN103055656A/en
Application granted granted Critical
Publication of CN103055656B publication Critical patent/CN103055656B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention discloses a method for performing mercury removal treatment on boiler flue gas by utilizing a coal ash-based mercury removal adsorbent. The method comprises the following steps of: arranging the coal ash-based mercury removal adsorbent in a boiler flue for adsorbing mercury in the flue gas, performing desulfurization treatment on the flue gas subjected to mercury removal adsorption, and after the coal ash-based mercury removal adsorbent reaches the absorbing saturation, discharging the flue gas into atmosphere; and blowing out and collecting Hg2+ and a few amount of Hg0 adsorbed in the coal ash-based mercury removal adsorbent by using hot air, wherein the coal ash-based mercury removal adsorbent is prepared from the following raw materials in percent by weight: 5-15 percent of white mud, 10-15 percent of clay, 2-10 percent of cement and the balance of coal ash. The adsorbent is reasonable in formula, high-efficiency and economical; the coal ash-based mercury removal adsorbent is regenerated by employing a low-temperature regeneration technology; and moreover, the adsorbed mercury is independently treated in a centralized mode, and secondary pollution caused by introducing Hg into byproducts is avoided.

Description

Utilize coal ash based mercury-removing adsorbing agent boiler smoke to be carried out to the method for demercuration processing
Technical field
The present invention relates to a kind of flue gas demercuration technology, particularly utilize the method for coal ash based mercury-removing adsorbing agent to the processing of boiler smoke demercuration.
Background technology
Hg is a kind of poisonous heavy metal element, is discharged in environment and can causes serious pollution to environment.The Hg being discharged in environment has nature discharge and two kinds of sources of anthropogenic discharge, and coal burning is that maximum people is Hg emission source.The Hg of coal-burning power plant's discharge can account for people for 70% of Hg discharge, and the average mercurous quality of every kilogram of coal is 0.22mg.So calculate, annual coal fire discharged mercury and amount of pollutants thereof are huge, will produce serious harm to ecological environment and human health.Once gas mercury entered environment, through sedimentation and water-soluble after, be finally converted into hypertoxic methyl mercury, if methyl mercury enters human body by food chain, can produce serious harm to people's nervous system and development system.Hg pollution problem has become the focus of global concern, and being needs the urgent problem solving.In order to solve mercury pollution, prevent and treat the pollution of mercury to atmosphere from source, study current major part both at home and abroad and concentrate on efficient, economic adsorbent development and utilize reinforced by additive wet method fume desulfurizing system demercuration.Wherein, the research of wet method fume desulfurizing system demercuration is mainly to utilize additive by the Hg in flue gas 0be oxidized to Hg soluble in water 2+although this method has reached the object that reduces smoke mercury emission, again a part of mercury is transferred in accessory substance gypsum, in gypsum processing and utilization process afterwards, mercury wherein can be discharged again, and then cause secondary pollution.
In prior art, removing Elemental Mercury is the most effectively that active carbon sprays into technology with the most widely used technology, can though this obvious technical effects-remove 99% Elemental Mercury, the operating cost of this technology (being mainly the cost of active carbon) is higher, thereby can not promote the use of on a large scale.Ca-base adsorbent is to Hg 2+adsorption efficiency higher, to Hg 0removal efficiency lower.Result of study shows, calcium base class material is as Ca (OH) 2, to HgCl 2adsorption efficiency can reach 85%; Alkaline adsorbent, as CaO, equally also can reach and adsorb well HgCl 2effect, but these calcium base class materials are but very low to the adsorption efficiency of Elemental Mercury.
Summary of the invention
Problem to be solved by this invention is to provide a kind of method of utilizing coal ash based mercury-removing adsorbing agent boiler smoke to be carried out to demercuration processing, adopt this technology can low cost, high efficiency carries out centralized recovery to flue gas demercuration and to the mercury removing, and avoids secondary pollution.
The alleged problem of the present invention is solved by following technical scheme:
A kind of method of utilizing coal ash based mercury-removing adsorbing agent boiler smoke to be carried out to demercuration processing, its special feature is: it is inserted coal ash based mercury-removing adsorbing agent in boiler flue and adsorb the mercury in flue gas, drains into atmosphere again through the flue gas of demercuration absorption after desulfurization is processed; Described coal ash based mercury-removing adsorbing agent reach absorption saturated after, with thermal current by the Hg adsorbing in coal ash based mercury-removing adsorbing agent 2+and a small amount of Hg 0blow out and collection and treatment;
Described coal ash based mercury-removing adsorbing agent is made up of the raw material of following weight percentage: white clay 5%-15%, clay 10%-15%, cement 2%-10%, and surplus is flyash;
Flyash particle diameter used is less than 25um; Above-mentioned raw materials is weighed up by proportioning, add water and mix, make the spherical particles that diameter is 8-10mm, gravity-flow ventilation is at normal temperatures dried.
The above-mentioned method of utilizing coal ash based mercury-removing adsorbing agent boiler smoke to be carried out to demercuration processing, sets up absorption cell, the Hg that thermal current blows out 2+and a small amount of Hg 0collection and treatment in absorption cell, carry out; Splendid attire NaClO in described absorption cell 2the aqueous solution and demercuration stabilizing agent Na 2s; NaClO 2the aqueous solution is by Hg 0all be oxidized to Hg 2+; Demercuration stabilizing agent Na 2s is by Hg 2+be converted into mercury accessory substance HgS, after precipitation, can collect.
The above-mentioned method of utilizing coal ash based mercury-removing adsorbing agent boiler smoke to be carried out to demercuration processing, set up regenerated reactor, in described regenerated reactor, heater is set, described thermal current is heated to 340-350 DEG C by heater and introduces in boiler flue again, becomes the regeneration gas that makes coal ash based mercury-removing adsorbing agent activity recovery.
The above-mentioned method of utilizing coal ash based mercury-removing adsorbing agent boiler smoke to be carried out to demercuration processing, in demercuration is processed, described coal ash based mercury-removing adsorbing agent in flue is divided into two parts, a part is the adsorbed state to mercury in coal ash based mercury-removing adsorbing agent, the state of another part in coal ash based mercury-removing adsorbing agent activity recovery; Between two parts, alternately change its state.
The above-mentioned method of utilizing coal ash based mercury-removing adsorbing agent boiler smoke to be carried out to demercuration processing, NaClO in described absorption cell 2the mass concentration of the aqueous solution is 1-3%, described Na 2the addition of S is determined by following principle: record online the decrease of gas mercury concentration, ask the reduction that obtains gas mercury according to flue gas flow signal, obtain the adsorbance of adsorbent, Na 2the mol ratio of the addition of S and institute's Adsorption of Mercury is 1.2:1.
The above-mentioned method of utilizing coal ash based mercury-removing adsorbing agent boiler smoke to be carried out to demercuration processing, described coal ash based mercury-removing adsorbing agent reaches the saturated criterion of absorption: the gas mercury concentration before the absorption of adsorbent entrance and exit difference on-line monitoring and after absorption, and in the time that adsorbance is less than 40%, think and reach absorption saturation state.
The present invention is directed to and solve low cost flue gas demercuration and mercury recovery problem and improve, compared with prior art, the present invention has following features: the coal ash based mercury-removing adsorbing agent formula that 1, the present invention adopts rationally, high-efficiency and economic.Experiment shows, the variation that is proportionate of the adsorption capacity of flyash to mercury and particle diameter, be that flyash particle diameter is less, adsorption capacity is stronger, the adsorption capacity that particle diameter is less than the flyash of 25um is 1.5 times of left and right of former flyash, prior art is all directly to select former flyash, and the present invention selects particle diameter to be less than the powdered coal ash of 25um, has greatly strengthened the adsorption capacity to mercury; 2, the present invention has added white clay in coal ash based mercury-removing adsorbing agent, and white clay is that ammonia-soda process soda plant produces being commonly called as of waste residue, and its composition is with CaCO 3be main, also contain part CaSO 4with MgO, CaO, and also containing the Cl of 10% left and right of having an appointment, wherein CaO is to HgCl 2there is very strong adsorption capacity, be attached to Cl on flyash by Hg 0be oxidized to HgCl 2, then adsorbed by flyash and CaO, strengthen the adsorption capacity of coal ash based mercury-removing adsorbing agent to mercury, and in improving demercuration efficiency, reached again the object of twice laid; 3, the present invention adopts low-temp recovery technique to make coal ash based mercury-removing adsorbing agent obtain regeneration, and experiment shows, the mercury adsorbing in coal ash based mercury-removing adsorbing agent is mainly HgCl 2and HgS, their heating release temperature is all lower than 350 DEG C, and at this temperature, flyash Cl content raises and changes not quite with temperature, therefore primary recycling can maintain for a long time, makes coal ash based mercury-removing adsorbing agent obtain recycling, and has greatly saved cost; 4, the present invention focuses on separately adsorbed mercury, has avoided Hg to be incorporated in accessory substance and to cause and secondary pollution reached the object recycling.
Brief description of the drawings
Fig. 1 is the schematic diagram that adsorbs chimney meatus transmitting smoke state under system for use in carrying of the present invention;
Fig. 2 is the schematic diagram that adsorbs chimney meatus transmitting smoke state on system for use in carrying of the present invention.
In figure, each label implication inventory is as follows: 1, boiler; 2, economizer; 3, air preheater; 4, the attached regeneration gas upper channel of desorption; 5, deduster; 6, flue entrance slide damper; 7, the first valve; 8, upper absorption flue; 9, coal ash based mercury-removing adsorbing agent; 10, lower absorption flue; 11, regeneration gas upper channel; 12, flue outlet slide damper; 13, desulphurization system; 14, the second valve; 15, blower fan; 16, regeneration gas main channel; 17, heater; 18, regenerated reactor; 19, the 4th valve; 20, regeneration gas lower channel; 21, the 3rd valve; 22, the attached regeneration gas lower channel of desorption; 23, drier; 24, tube connector; 25, absorption cell.
Detailed description of the invention
The inventive method comprises the steps:
(1) coal ash based mercury-removing adsorbing agent preparation: described coal ash based mercury-removing adsorbing agent is made up of the raw material of following weight percentage: white clay 5%-15%, clay 10%-15%, cement 2%-10%, surplus is flyash, flyash particle diameter used is less than 25um, and the Powder ash adsorption ability that particle diameter is less than 25um can improve greatly; Above-mentioned raw materials is weighed up according to proportioning, add water and mix, make the spherical particles that diameter is 8-10mm, gravity-flow ventilation is at normal temperatures dried.
(2) flue gas absorption, inserts the mercury in boiler flue absorption flue gas by coal ash based mercury-removing adsorbing agent, discharges through the flue gas of absorption after desulfurization is processed again.
(3) coal ash based mercury-removing adsorbing agent regeneration: until coal ash based mercury-removing adsorbing agent reach absorption saturated after, the regeneration gas of the 340-350 from regenerated reactor DEG C is caused to flue to the coal ash based mercury-removing adsorbing agent processing of regenerating.Experiment shows, the mercury adsorbing in coal ash based mercury-removing adsorbing agent is mainly HgCl 2and HgS, when constant temperature stripping at 340-350 DEG C is after 4-4.5 hour, in coal ash based mercury-removing adsorbing agent, the burst size of mercury has reached more than 98%.So when coal ash based mercury-removing adsorbing agent regeneration, to passing into the regeneration gas of 340-350 DEG C in the coal ash based mercury-removing adsorbing agent of absorption saturation state, flow control is at 0.1-0.4m/s, duration of ventilation reaches the mercury adsorbing in coal ash based mercury-removing adsorbing agent after 4-4.5 hour and substantially separates out completely, and because regeneration gas temperature is lower, adsorption activity impact on adsorbent is less, has therefore reached the object of adsorbent reactivation.
(4) recycling of mercury: attached the desorption by blowing in coal ash based mercury-removing adsorbing agent, carry mercury regeneration gas is caused to absorption cell, and the absorption liquid in absorption cell is the NaClO of mass concentration 1-3% 2the aqueous solution, is mainly water-soluble Hg in the attached regeneration gas of desorption 2+, also have a small amount of Hg 0, NaClO 2the aqueous solution is by Hg 0all be oxidized to Hg 2+; In absorption cell, add demercuration stabilizing agent Na again 2s, by Hg 2+be converted into mercury accessory substance HgS, collection and treatment after precipitation; After super-dry is processed, enter regenerated reactor by the gas overflowing in absorption cell, be heated to be the regeneration gas of 340-350 DEG C.The main chemical reactions occurring in absorption cell is as follows:
2Hg+4NaC1O 2+2H 2O→?2HgC1 2+4NaOH+3O 2?
Hg 2++S 2-→HgS。
Primary raw material in the coal ash based mercury-removing adsorbing agent using in the inventive method is flyash, because flyash has good absorption property, and cheap, therefore utilize the standby high-efficiency mercury removal adsorbent of coal ash for manufacturing to there is obvious price advantage; White clay is that ammonia-soda process soda plant produces being commonly called as of waste residue, and its composition is with CaCO 3be main, also contain part CaSO 4with MgO, CaO, and 10% the Cl of also having an appointment, utilize Cl in white clay to carry out modification to flyash and will greatly improve demercuration efficiency, and in improving demercuration efficiency, reached again the object of twice laid; In addition, the mercury of coal ash based mercury-removing adsorbing agent absorption is focused on and can avoid mercury to transfer in accessory substance, the secondary pollution that prevents and then cause, has reached the object recycling.
Implement the system of the inventive method referring to Fig. 1, described system comprises boiler 1, boiler flue, absorption cell 25 and regenerated reactor 18.Absorption cell 25 tops are communicated with through tube connector 24 with regenerated reactor 18 tops, are provided with drier 23 in tube connector 24, and drier is used for the gas being overflowed by absorption cell through super-dry processing.Described boiler 1 is communicated with boiler flue through economizer 2, air preheater 3, deduster 5, boiler flue is made up of the upper absorption flue 8 being arranged side by side up and down and lower absorption flue 10, boiler flue outlet connects desulphurization system 13, through the flue gas of upper absorption flue 8 or lower absorption flue 10 demercuration adsorption treatment, then by discharging after desulphurization system 13 desulfurization.As seen from Figure 1, upper absorption flue and lower absorption flue middle part are provided with coal ash based mercury-removing adsorbing agent 9, be provided with flue entrance slide damper 6 at the entrance of boiler flue, flue entrance slide damper can mate as required and blocks absorption flue entrance or lower absorption flue entrance; The outlet of boiler flue is provided with flue outlet slide damper 12, and flue outlet slide damper can mate as required and blocks absorption flue outlet or lower absorption flue outlet.Described upper absorption flue 8 is through the attached regeneration gas upper channel 4 of desorption and be communicated with absorption cell 25, upper absorption flue 8 is communicated with regenerated reactor 18 through regeneration gas upper channel 11 and regeneration gas main channel 16; Described lower absorption flue 10 through the attached regeneration gas lower channel 22 of desorption be communicated with absorption cell 25, lower absorption flue 10 is communicated with regenerated reactor 18 through regeneration gas lower channel 20 and regeneration gas main channel 22.
Still referring to Fig. 1, for controlling the flow direction of regeneration gas and the attached regeneration gas of desorption, the attached regeneration gas upper channel of desorption 4 porch are provided with the first valve 7, regeneration gas upper channel 11 porch are provided with the second valve 14, the attached regeneration gas lower channel of desorption 22 porch are provided with the 3rd valve 21, and regeneration gas lower channel porch is provided with the 4th valve 19.
Still be provided with blower fan 15 referring to regeneration gas main channel 16 described in Fig. 1, regeneration gas main channel is communicated with regeneration gas upper channel 11 and regeneration gas lower channel 20 respectively through threeway.
System for use in carrying of the present invention, upper absorption flue 8 and lower absorption flue 10 hocket, and demercuration is discharged fume and coal ash based mercury-removing adsorbing agent regeneration, Figure 1 shows that lower absorption flue 8 demercuration smoke evacuations, the regeneration of upper absorption flue coal ash based mercury-removing adsorbing agent, Figure 2 shows that the 8 demercuration smoke evacuations of absorption flue, the regeneration of lower absorption flue coal ash based mercury-removing adsorbing agent.The course of work of explanation native system as an example of Fig. 1 example: the flue gas of boiler 1 enters lower absorption flue 10 after economizer 2, air preheater 3 and deduster 5, now flue entrance slide damper 6 and flue outlet slide damper 12 block the entrance and exit at upper absorption flue 8, by upper absorption flue sealing.Smoke gas flow, in the time of lower absorption flue 10, through desulphurization system 13 desulfurization after is discharged after being adsorbed demercuration by coal ash based mercury-removing adsorbing agent 9 again.Meanwhile, coal ash based mercury-removing adsorbing agent 9 in upper absorption flue 8 is regenerated, blower fan 15 starts, the first valve 7, the second valve 14 are opened, the 3rd valve 21, the 4th valve 19 are closed, regenerated reactor 18 interior through heater 17 be heated to the regeneration gas of 340-350 DEG C through regeneration gas main channel 16, regeneration gas upper channel 11 enters upper absorption flue 8, regeneration gas is blown over after coal ash based mercury-removing adsorbing agent, the attached regeneration gas of desorption of carrying mercury enters absorption cell 25 by the attached regeneration gas upper channel 4 of desorption, with the NaClO in absorption cell 2reactant aqueous solution, NaClO 2the aqueous solution is by Hg 0all be oxidized to Hg 2+.In absorption cell, add demercuration stabilizing agent Na 2s, by Hg 2+be converted into mercury accessory substance HgS, collection and treatment after precipitation.After the dry processing of drier 23, enter regenerated reactor 18 by the gas overflowing in absorption cell, be heated to be the regeneration gas of 340-350 DEG C by heater 17.Said process continues to carry out, until coal ash based mercury-removing adsorbing agent 9 regenerative processes in upper absorption flue finish.After the coal ash based mercury-removing adsorbing agent arrival absorption in lower absorption flue is saturated, the mode of operation of upper and lower absorption flue switches to Fig. 2 state.
The embodiment of several preparations coal ash based mercury-removing adsorbing agent of the present invention is below provided:
Embodiment 1: the raw material that takes following weight percentage: white clay 5%, clay 12%, cement 4%, surplus is flyash, flyash particle diameter used is less than 25um;
Embodiment 2: the raw material that takes following weight percentage: white clay 15%, clay 10%, cement 2%, surplus is flyash, flyash particle diameter used is less than 25um;
Embodiment 3: the raw material that takes following weight percentage: white clay 10%, clay 15%, cement 10%, surplus is flyash, flyash particle diameter used is less than 25um;
Embodiment 4: the raw material that takes following weight percentage: white clay 8%, clay 13%, cement 7%, surplus is flyash, flyash particle diameter used is less than 25um;
Embodiment 5: the raw material that takes following weight percentage: white clay 12%, clay 14%, cement 5%, surplus is flyash, flyash particle diameter used is less than 25um;
Above-described embodiment raw material is added water and mixed, make the spherical particles that diameter is 8-10mm, gravity-flow ventilation is at normal temperatures dried, and makes coal ash based mercury-removing adsorbing agent.

Claims (5)

1. utilize coal ash based mercury-removing adsorbing agent boiler smoke to be carried out to a method for demercuration processing, it is characterized in that: it is inserted coal ash based mercury-removing adsorbing agent in boiler flue and adsorb the mercury in flue gas, drains into atmosphere again through the flue gas of demercuration absorption after desulfurization is processed; Described coal ash based mercury-removing adsorbing agent reach absorption saturated after, with thermal current by the Hg adsorbing in coal ash based mercury-removing adsorbing agent 2+and a small amount of Hg 0blow out and collection and treatment;
Described coal ash based mercury-removing adsorbing agent is made up of the raw material of following weight percentage: white clay 5%-15%, clay 10%-15%, cement 2%-10%, and surplus is flyash;
Flyash particle diameter used is less than 25um; Above-mentioned raw materials is weighed up by proportioning, add water and mix, make the spherical particles that diameter is 8-10mm, gravity-flow ventilation is at normal temperatures dried;
Set up absorption cell, the Hg that thermal current blows out 2+and a small amount of Hg 0collection and treatment in absorption cell, carry out; Splendid attire NaClO in described absorption cell 2the aqueous solution and demercuration stabilizing agent Na 2s; NaClO 2the aqueous solution is by Hg 0all be oxidized to Hg 2+; Demercuration stabilizing agent Na 2s is by Hg 2+be converted into mercury accessory substance HgS, after precipitation, can collect.
2. the method for utilizing coal ash based mercury-removing adsorbing agent boiler smoke to be carried out to demercuration processing according to claim 1, it is characterized in that, set up regenerated reactor, in described regenerated reactor, heater is set, described thermal current is heated to 340-350 DEG C by heater and introduces in boiler flue again, becomes the regeneration gas that makes coal ash based mercury-removing adsorbing agent activity recovery.
3. the method for utilizing coal ash based mercury-removing adsorbing agent boiler smoke to be carried out to demercuration processing according to claim 2, it is characterized in that, in demercuration is processed, described coal ash based mercury-removing adsorbing agent in flue is divided into two parts, a part is the adsorbed state to mercury in coal ash based mercury-removing adsorbing agent, the state of another part in coal ash based mercury-removing adsorbing agent activity recovery; Between two parts, alternately change its state.
4. the method for utilizing coal ash based mercury-removing adsorbing agent boiler smoke to be carried out to demercuration processing according to claim 3, is characterized in that NaClO in described absorption cell 2the mass concentration of the aqueous solution is 1-3%, described Na 2the addition of S is determined by following principle: record online the decrease of gas mercury concentration, ask the reduction that obtains gas mercury according to the decrease of gas mercury concentration, obtain the adsorbance of adsorbent, Na 2the mol ratio of the addition of S and institute's Adsorption of Mercury is 1.2:1.
5. the method for utilizing coal ash based mercury-removing adsorbing agent boiler smoke to be carried out to demercuration processing according to claim 4, it is characterized in that, described coal ash based mercury-removing adsorbing agent reaches the saturated criterion of absorption: the gas mercury concentration before the absorption of adsorbent entrance and exit difference on-line monitoring and after absorption, and in the time that adsorbance is less than 40%, think and reach absorption saturation state.
CN201310045192.3A 2013-02-05 2013-02-05 Method for performing mercury removal treatment on boiler flue gas by utilizing coal ash-based mercury removal adsorbent Expired - Fee Related CN103055656B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310045192.3A CN103055656B (en) 2013-02-05 2013-02-05 Method for performing mercury removal treatment on boiler flue gas by utilizing coal ash-based mercury removal adsorbent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310045192.3A CN103055656B (en) 2013-02-05 2013-02-05 Method for performing mercury removal treatment on boiler flue gas by utilizing coal ash-based mercury removal adsorbent

Publications (2)

Publication Number Publication Date
CN103055656A CN103055656A (en) 2013-04-24
CN103055656B true CN103055656B (en) 2014-12-17

Family

ID=48098729

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310045192.3A Expired - Fee Related CN103055656B (en) 2013-02-05 2013-02-05 Method for performing mercury removal treatment on boiler flue gas by utilizing coal ash-based mercury removal adsorbent

Country Status (1)

Country Link
CN (1) CN103055656B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104511227A (en) * 2014-11-17 2015-04-15 江苏大学 Fluidized bed mercury removal method and device based on straw ash

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7504081B2 (en) * 2007-03-27 2009-03-17 General Electric Company Methods and apparatus to facilitate reducing mercury emissions
CN100496672C (en) * 2007-04-30 2009-06-10 武汉凯迪电力环保有限公司 Wet flue gas desulfurizing and hydrargyrum-removing technology based on two-stage oxidation reaction and system thereof
CN101856607B (en) * 2010-06-04 2013-01-23 重庆大学 Flue gas demercuration adsorbent
CN102284272B (en) * 2011-06-23 2013-08-07 重庆大学 Fly ash-based smoke demercuration adsorbent
CN202497799U (en) * 2011-12-16 2012-10-24 国电环境保护研究院 Fire coal flue gas adsorption mercury removal device
CN102818248B (en) * 2012-07-20 2014-03-26 广东电网公司电力科学研究院 High-chlorine biomass and coal co-utilizing system with low-chlorine-corrosion and low-mercury discharge and method
CN102824845A (en) * 2012-09-13 2012-12-19 华北电力大学(保定) Method and system for utilizing white mud to remove mercury of biomass combustion boiler smoke

Also Published As

Publication number Publication date
CN103055656A (en) 2013-04-24

Similar Documents

Publication Publication Date Title
JP4988864B2 (en) Use of SO2 from flue gas in ammonia acid cleaning
CN101856607B (en) Flue gas demercuration adsorbent
CN102974181A (en) Flue gas dedusting and desulfurization and denitrification craft and special device thereof
US9895657B2 (en) High-efficiency method for removing sulfur and mercury of coal-fired flue gas, and apparatus thereof
CN1962034A (en) Method and apparatus for removing sulfur, nitrate and mercury simultaneously from boiler flue gas
CN104906937A (en) Flue gas desulfurization and denitrification device and method of coal fired boiler
CN102091517A (en) Integrated absorption solution for simultaneous desulfuration, denitration and mercury removal and preparation method and application thereof
CN206444401U (en) A kind of flying dust flue gas combination purification system for burning city domestic garbage
CN203899430U (en) System for processing incinerating gas
CN205199271U (en) Middle -size and small -size coal fired boiler flue gas dedusting and desulfurizing denitration is treatment equipment in coordination
CN104759192A (en) Low-cost coal-fired flue gas various pollutant ultralow emission system and low-cost coal-fired flue gas various pollutant ultralow emission method
CN103894047A (en) Flue gas pollutant control integrated purifying and recycling process
CN105688566A (en) Desulfurization and denitrification device and method for sintering flue gas
CN106964243A (en) A kind of integrative coordinated removing sulfur trioxide device and its method of work suitable for sulphur coal
CN106139848B (en) A kind of flue gas pollutant purification process
CN204582930U (en) A kind of low cost coal-fired flue-gas multiple pollutant minimum discharge system
CN103055656B (en) Method for performing mercury removal treatment on boiler flue gas by utilizing coal ash-based mercury removal adsorbent
CN203108371U (en) Special device for flue gas dust removal desulfurization and denitrification process
CN205252893U (en) Glass smoke pollutants is purifier in coordination
CN107596883A (en) A kind of desulfurization wastewater Zero discharging system and its method of work
CN205252861U (en) Glass flue gas of kiln pollutant is purifier in coordination
CN104028101B (en) Flue gas desulfurizing and hydrargyrum-removing integral system and technique
JP2013202434A (en) Method for disposing of fluidized bed-system boiler ash and disposer
CN106853320A (en) A kind of coal-burning boiler for flue gas desulfurization, denitration mechanism and method
CN207445938U (en) A kind of desulfurization wastewater Zero discharging system

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141217

Termination date: 20160205

CF01 Termination of patent right due to non-payment of annual fee