CN113813920B - Activated carbon for adsorbing dioxin in waste incineration flue gas and preparation method thereof - Google Patents
Activated carbon for adsorbing dioxin in waste incineration flue gas and preparation method thereof Download PDFInfo
- Publication number
- CN113813920B CN113813920B CN202111281920.1A CN202111281920A CN113813920B CN 113813920 B CN113813920 B CN 113813920B CN 202111281920 A CN202111281920 A CN 202111281920A CN 113813920 B CN113813920 B CN 113813920B
- Authority
- CN
- China
- Prior art keywords
- activated carbon
- grinding
- coal
- funnel
- hole
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
Abstract
The invention relates to the technical field of adsorption materials, in particular to activated carbon for adsorbing dioxin in waste incineration flue gas and a preparation method thereof, and the preparation method of activated carbon for adsorbing dioxin in waste incineration flue gas comprises the following steps: s1, mixing pulverized coal, water, a catalyst and coal tar, and stirring to form coal particles; s2, placing the coal particles into a furnace for heating and drying to form active carbon; s3, placing the activated carbon into inert gas, cooling, and grinding and crushing the activated carbon; s4, sequentially placing the crushed activated carbon particles into an acidic compound and an alkaline compound for washing; s5, taking out the washed activated carbon particles, and carrying out winnowing separation; according to the invention, the catalyst and the coal dust are subjected to heating reaction contact in the furnace, so that the pore size distribution of the generated activated carbon is controlled to be concentrated, the adsorption effect on dioxin is increased, and the adsorption rate is improved.
Description
Technical Field
The invention relates to the technical field of adsorption materials, in particular to activated carbon for adsorbing dioxin in waste incineration flue gas and a preparation method thereof.
Background
Dioxin is a colorless, odorless and highly toxic fat-soluble substance, has very stable properties, higher melting point, is very insoluble in water, is very easy to accumulate in organisms and has great harm to human bodies.
Dioxin is generated in incineration of household garbage, and incineration smoke needs to be treated, otherwise secondary pollution is caused. The activated carbon has a huge specific surface area and a unique pore size structure, is mostly used for absorbing various pollutants, and is also an adsorption material for removing dioxin. In the market, activated carbon is sprayed through an activated carbon nozzle, and then captured and collected, so that the particle size of the activated carbon is required to be certain. The activated carbon is adsorbed in the process of contacting with the flue gas, but the activated carbon belongs to combustible materials, and the high-temperature flue gas can burn the activated carbon.
Disclosure of Invention
The invention aims to provide activated carbon for adsorbing dioxin in waste incineration flue gas and a preparation method thereof, and the activated carbon solves the problems.
In order to achieve the above purpose, the present invention provides the following technical solutions: the preparation method of the activated carbon for adsorbing dioxin in the waste incineration flue gas comprises the following steps:
s1, mixing pulverized coal, water, a catalyst and coal tar, and stirring to form coal particles;
s2, placing the coal particles into a furnace for heating and drying to form active carbon;
s3, placing the activated carbon into inert gas, cooling, and grinding and crushing the activated carbon;
s4, sequentially placing the crushed activated carbon particles into an acidic compound and an alkaline compound for washing;
s5, taking out the washed activated carbon particles, and carrying out winnowing separation.
Further, the pulverized coal includes one or more of anthracite, lean coal and weakly caking coal.
Further, the device for grinding and crushing the activated carbon in the step S3 comprises an organism, wherein a working cavity penetrating upwards is arranged in the organism, a sealing cover which is detachably connected is arranged on the organism, a motor is arranged on the side wall of the working cavity, a grinding device for crushing the activated carbon is connected to the output shaft of the motor, a rotating shaft is rotatably arranged on the side wall of the working cavity along the axial direction of the output shaft of the motor, and the rotating shaft is connected with the grinding device; be equipped with row material pipe back flow in the organism, row material pipe one end runs through the organism, row material pipe other end stretches into the working chamber diapire, row material pipe in the working chamber interconnect has the funnel, the funnel is located the grinder below.
Further, grinder includes the lapping piece, the lapping piece with the pivot the motor is connected, be equipped with the grinding chamber in the lapping piece, the lapping piece is equipped with along the radial through-hole that runs through of pivot, be equipped with the spin in the grinding chamber, the spin diameter is greater than the through-hole diameter.
Further, the grinding block is provided with a filtering hole at the through hole, and the diameter of the filtering hole is smaller than that of the through hole.
Further, the hydraulic rod of fixed connection is installed to the working chamber diapire, the hydraulic rod with funnel outer wall connection, funnel lower extreme fixedly connected with flexible pipe, flexible pipe with arrange material union coupling.
Further, rolling balls are placed in the hopper, the diameter of each rolling ball is larger than the diameter of an outlet at the lower end of the hopper, the hydraulic rod extends upwards, and when the through hole of the grinding block faces upwards, the grinding block is in rolling fit with the rolling balls.
Further, the sealing cover up end is equipped with the fan, the fixedly connected with back flow on the row material pipe, the back flow with the fan is dismantled and is connected, be connected with the feeding pipeline on the fan, the feeding pipeline lower extreme runs through sealed lid, the feeding pipeline upper end stretches out the fan.
Further, the alkaline compound is one or more of potassium hydroxide, sodium hydroxide and calcium hydroxide, the alkaline compound is used for neutralizing the acidic compound, and the activated carbon is washed by purified water after being washed by the alkaline compound until no residue exists.
Compared with the prior art, the invention has the beneficial effects that: the catalyst and the coal dust are contacted in a furnace through heating reaction, so that the pore size distribution of the generated activated carbon is controlled to be concentrated, the adsorption effect on dioxin is increased, the adsorption rate is improved, and the impurity content in the activated carbon is controlled through the washing of the acidic compound and the alkaline compound, so that the uncontrollable external influence of the activated carbon caused by high temperature is reduced; meanwhile, through winnowing separation, the active carbon powder suitable for spraying by the nozzle can be properly selected, and the working requirement is met.
Drawings
FIG. 1 is a schematic block diagram illustrating a flow chart according to an embodiment of the present invention.
FIG. 2 is a schematic diagram illustrating an overall structure of a polishing apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a working chamber of a polishing apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view illustrating an operation state of a polishing apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a polishing block in a polishing apparatus according to an embodiment of the invention.
In the figure: 11. sealing cover; 12. a blower; 13. a feed conduit; 21. a body; 22. a return pipe; 24. a working chamber; 25. a fan; 31. a partition plate; 32. a discharge port; 41. grinding the blocks; 42. a connecting shaft; 43. a motor; 44. filtering holes; 45. a grinding chamber; 46. a through hole; 51. a funnel; 52. a telescopic tube; 53. a hydraulic rod; 54. rolling ball.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides a method for preparing activated carbon for adsorbing dioxin in waste incineration flue gas, which is characterized in that: the method comprises the following steps:
s1, mixing coal dust, water, a catalyst and coal tar, wherein the coal tar is used as a binder to form coal particles, the coal dust comprises a plurality of anthracite, lean coal and weakly caking coal, the anthracite, the lean coal and the weakly caking coal are mixed according to the proportion of 1:3:10, the anthracite, the lean coal or the weakly caking coal is crushed into fine particles through rolling to form coal dust, and the coal dust, the water, the catalyst and the coal tar are uniformly mixed by stirring to form mixed coal particles;
s2, placing the coal particles into a carbonization furnace, heating and drying, carbonizing for 3 to 5 hours at the temperature of 500 ℃, and solidifying the coal particles to form active carbon;
s3, after forming active carbon, introducing inert gas, and protecting by the inert gas, thereby cooling the active carbon to 100 ℃, grinding and crushing the active carbon after cooling, and crushing the active carbon into fine particles for adsorbing dioxin;
s4, sequentially placing the crushed activated carbon particles into an acidic compound and an alkaline compound, placing the cooled activated carbon into inorganic acid for washing, optionally stirring and heating the activated carbon particles with a concentration of 1.10% and 6mol/l at a temperature of 100 ℃, and then performing flowing flushing operation, wherein the activated carbon after pickling is flushed by the alkaline compound until the PH value of the activated carbon is neutral;
s5, taking out the washed activated carbon particles, drying, carrying out air separation on the dried activated carbon, and selecting activated carbon particles with proper size to meet the requirement of spraying the activated carbon particles by a nozzle.
The activated carbon is used for adsorbing dioxin in incineration flue gas, the micropore size of the activated carbon needs to be controlled, the activated carbon pore size is used for adsorbing the dioxin, the catalyst comprises one or more of sodium carbonate, ammonium carbonate, potassium carbonate and ferric nitrate, and the catalyst is mixed with the coal dust, the coal tar and the water for reaction, so that the micropore size is influenced.
The alkaline compound is one or more of potassium hydroxide, sodium hydroxide and calcium hydroxide, and is used for neutralizing the acidic compound.
And washing the activated carbon with purified water after washing the activated carbon with the alkaline compound until no residue exists.
The particles in the activated carbon are easy to react with air in the cooling process to form other compounds, and the inert gas is nitrogen, so that the reaction between the activated carbon and the air is isolated by the nitrogen, and the purity of the activated carbon is ensured.
The device for grinding and crushing comprises a machine body 21, wherein a working cavity 24 penetrating upwards is arranged in the machine body 21, a sealing cover 11 which is detachably connected is arranged on the machine body 21, the sealing cover 11 and the machine body 21 can be separated, the inside of the working cavity 24 can be treated after separation, a motor 43 is fixedly arranged on the side wall of the working cavity 24, a grinding device for crushing active carbon is connected to an output shaft of the motor 43, the grinding device is driven to work through the motor 43, a rotating shaft 42 is rotatably arranged on the side wall of the working cavity 24 along the axial direction of the output shaft of the motor 43, the rotating shaft 42 is connected with the grinding device, and the rotating shaft 42 is matched with the output shaft of the motor 43; be equipped with row material pipe 23 in the organism 21, row material pipe 23 one end runs through the organism 21 has the opening, row material pipe 23 other end stretches into the working chamber 24 diapire, row material pipe 23 in the working chamber 24 interconnect has funnel 51, funnel 51 is located the grinder below, through funnel 51 carries out the collection work, and through row material pipe 23 discharges organism 21 to conveniently carry out the collection work.
The grinding device is used for grinding active carbon and comprises a grinding block 41, the grinding block 41 is connected with a rotating shaft 42 and a motor 43, the motor 43 is used for driving the grinding block 41 to rotate, a grinding cavity 45 is arranged in the grinding block 41, the grinding cavity 45 is spherical, the grinding block 41 is provided with a through hole 46 penetrating through the rotating shaft 42 in the radial direction, the through hole 46 is used for throwing in and discharging the active carbon, the through hole 46 is positioned right above the center of the grinding block 41, a rolling ball 47 is arranged in the grinding cavity 45, the rolling ball 47 is made of high-quality high-density materials, the diameter of the rolling ball 47 is larger than the diameter of the through hole 46, the diameter of the rolling ball 47 is smaller than the diameter of the grinding cavity 45, and the motor 43 is used for driving the grinding block 41 to rotate alternately and normally, so that acceleration is provided for the rolling ball 47, and the rolling ball 47 can actively squeeze the active carbon.
As shown in fig. 5, the through hole 46 is in an inverted cone shape, so that the activated carbon is conveniently put into the grinding block 41, filtering holes 44 are formed in the through hole 46, the filtering holes 44 are circumferentially distributed around the through hole 46, the diameter of the filtering holes 44 is smaller than that of the through hole 46, the activated carbon can enter from the filtering holes, when the activated carbon powder needs to be discharged, the grinding block 41 is rotated, the through hole 46 is vertically downward, and after the rolling balls 47 block the through hole, the activated carbon is discharged from the filtering holes 44.
The funnel 51 is located under the grinding block 41, when the activated carbon needs to be discharged after grinding, the activated carbon is collected through the funnel 51, a hydraulic rod 53 fixedly connected with the bottom wall of the working cavity 24 is installed, the hydraulic rod 53 is connected with the outer wall of the funnel 51, the lower end of the funnel 51 is fixedly connected with a telescopic pipe 52, the telescopic pipe 52 is connected with the discharge pipe 23, the funnel 51 is controlled to move up and down through the hydraulic rod 53, so that the funnel is close to or far away from the grinding block 41, and the activated carbon is convenient to collect.
And the grinding block 41 leaks from the through hole 46 in the swing rotation process, not only active carbon powder but also larger particles exist in the funnel 51, a rolling ball 54 is arranged in the funnel 51, the diameter of the rolling ball 54 is larger than the diameter of the outlet at the lower end of the funnel 51, the active carbon in the funnel 51 is rolled by the rolling ball 54, the hydraulic rod 53 extends upwards, when the through hole 46 of the grinding block 41 faces upwards, the grinding block 41 and the rolling ball 54 are in rolling fit, the grinding block 41 is spherical, and the grinding block 41 is abutted against the rolling ball 54, so that the grinding block 41 drives the rolling ball 54 to roll in the rotation process, and the active carbon is rolled.
The utility model discloses a sealed lid, including sealed lid 11, fan 12, be connected with feeding pipeline 13 on the fan 12, feeding pipeline 13 lower extreme runs through sealed lid 11, feeding pipeline 13 upper end stretches out fan 12 is used for to the organism 21 puts in the active carbon, the active carbon particle size that funnel 51 collected is different, generally needs to grind many times, fixedly connected with back flow 22 on the row material pipe 23, back flow 22 is fixed in on the outer wall of organism 21, back flow 22 with sealed lid 11 is dismantled and is connected, during operation of fan 12, row material pipe 23 export is sealed, fan 12 will active carbon in back flow 22 is drawn, will the active carbon of back flow 22 bottom is drawn the top and is put in the active carbon from feeding pipeline 13 in the working chamber 24.
Operating state
The sealing cover 11 is arranged at the upper end of the machine body 21, the return pipe 22 is connected with the fan 12, the through hole 46 of the grinding block 41 faces upwards, the feeding pipeline 13 is positioned above the through hole 46, and the outlet of the discharging pipe 23 is sealed. The hydraulic rod 53 is started, the hydraulic rod 53 drives the funnel 51 to move upwards, the funnel 51 drives the rolling ball 54 to move upwards, and the rolling ball 54 is abutted with the lower end of the grinding block 41. Active carbon is put into the grinding cavity 45 from the feeding pipeline 13, the active carbon falls into the grinding cavity 45 from the feeding pipeline 13, the motor 43 is started, the motor 43 is alternately rotated in the forward and reverse directions, the rotation angle is smaller than 90 degrees, the output shaft of the motor 43 drives the grinding blocks 41 to alternately rotate in the forward and reverse directions, the rolling balls 47 swing by inertia under the action of the grinding blocks 41, and the rolling balls 47 reciprocate in the grinding cavity 45 and squeeze the active carbon. The grinding block 41 rotates to drive the rolling balls 54 to roll in the hopper 51, and the rolling balls 54 roll the activated carbon falling on the inner peripheral surface of the hopper 51. After the motor 43 rotates forward and backward for N times alternately, the motor 43 rotates 180 degrees to enable the opening of the through hole 46 of the grinding cavity 45 to face downwards, the motor 43 reduces the rotating speed and continues to rotate forward and backward alternately, the rotating angle is smaller than 90 degrees, at the moment, the through hole is blocked by the rolling ball 47, and the activated carbon powder can only fall into the funnel 51 from the filtering hole 44. The motor 43 and the funnel 51 are restored to the initial state, the grinding block 41 is abutted with the grinding ball 54, the activated carbon powder in the funnel 51 falls into the return pipe 22 through the telescopic pipe 52, the fan 12 works, the activated carbon powder below the return pipe 22 moves to the fan 12, and the fan 12 blows the activated carbon to fall into the grinding cavity 45 again through the feeding pipeline 13. After repeating the operation of the motor 43 a plurality of times, the through hole 46 of the grinding block 41 is opened downwards, the hopper 51 is moved downwards, the fan 12 is closed, the discharge pipe 23 is opened, and the activated carbon particles are discharged from the discharge pipe 23.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (4)
1. The preparation method of the activated carbon for adsorbing dioxin in the waste incineration flue gas is characterized by comprising the following steps of: the method comprises the following steps:
s1, mixing pulverized coal, water, a catalyst and coal tar, and stirring to form coal particles;
s2, placing the coal particles into a furnace for heating and drying, and carbonizing for 3 to 5 hours at the temperature of 500 ℃ to form active carbon;
s3, placing the activated carbon into inert gas, cooling, and grinding and crushing the activated carbon;
s4, sequentially placing the crushed activated carbon particles into an acidic compound and an alkaline compound for washing;
s5, taking out the washed activated carbon particles, and carrying out winnowing separation;
the device for grinding and crushing the activated carbon in the step S3 comprises a machine body (21), wherein a working cavity (24) penetrating upwards is arranged in the machine body (21), a sealing cover (11) which is detachably connected is arranged on the machine body (21), a motor (43) is arranged on the side wall of the working cavity (24), a grinding device for crushing the activated carbon is connected to an output shaft of the motor (43), a rotating shaft (42) is rotatably arranged on the side wall of the working cavity (24) along the axial direction of the output shaft of the motor (43), and the rotating shaft (42) is connected with the grinding device; a discharge pipe (23) and a return pipe (22) are arranged in the machine body (21), one end of the discharge pipe (23) penetrates through the machine body (21), the other end of the discharge pipe (23) extends into the bottom wall of the working cavity (24), the discharge pipe (23) is connected with a funnel (51) in the working cavity (24), and the funnel (51) is positioned below the grinding device;
the grinding device comprises a grinding block (41), wherein the grinding block (41) is connected with the rotating shaft (42) and the motor (43), a grinding cavity (45) is formed in the grinding block (41), a through hole (46) penetrating radially along the rotating shaft (42) is formed in the grinding block (41), a rolling ball (47) is arranged in the grinding cavity (45), and the diameter of the rolling ball (47) is larger than that of the through hole (46);
the grinding block (41) is provided with a filter hole (44) at the through hole (46), and the diameter of the filter hole (44) is smaller than that of the through hole (46);
the bottom wall of the working cavity (24) is provided with a fixedly connected hydraulic rod (53), the hydraulic rod (53) is connected with the outer wall of the funnel (51), the lower end of the funnel (51) is fixedly connected with a telescopic pipe (52), and the telescopic pipe (52) is connected with the discharge pipe (23);
a rolling ball (54) is arranged in the funnel (51), the diameter of the rolling ball (54) is larger than the diameter of an outlet at the lower end of the funnel (51), the hydraulic rod (53) extends upwards, and when the through hole (46) of the grinding block (41) faces upwards, the grinding block (41) and the rolling ball (54) are in rolling fit;
the novel air conditioner is characterized in that a fan (12) is arranged on the upper end face of the sealing cover (11), a return pipe (22) is fixedly connected to the discharge pipe (23), the return pipe (22) is detachably connected with the fan (12), a feeding pipeline (13) is connected to the fan (12), the lower end of the feeding pipeline (13) penetrates through the sealing cover (11), and the upper end of the feeding pipeline (13) extends out of the fan (12).
2. The method for preparing the activated carbon for adsorbing dioxin in waste incineration flue gas according to claim 1, which is characterized in that: the pulverized coal comprises one or more of anthracite, lean coal and weakly caking coal.
3. The method for preparing the activated carbon for adsorbing dioxin in waste incineration flue gas according to claim 1, which is characterized in that: the alkaline compound is one or more of potassium hydroxide, sodium hydroxide and calcium hydroxide, the alkaline compound is used for neutralizing the acidic compound, and the activated carbon is washed by purified water after being washed by the alkaline compound until no residue exists.
4. An activated carbon obtainable by the process of any one of claims 1 to 3, characterized in that: the activated carbon is used for adsorbing dioxin in the waste incineration flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111281920.1A CN113813920B (en) | 2021-11-01 | 2021-11-01 | Activated carbon for adsorbing dioxin in waste incineration flue gas and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111281920.1A CN113813920B (en) | 2021-11-01 | 2021-11-01 | Activated carbon for adsorbing dioxin in waste incineration flue gas and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113813920A CN113813920A (en) | 2021-12-21 |
| CN113813920B true CN113813920B (en) | 2023-07-21 |
Family
ID=78919222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111281920.1A Active CN113813920B (en) | 2021-11-01 | 2021-11-01 | Activated carbon for adsorbing dioxin in waste incineration flue gas and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113813920B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106938846A (en) * | 2017-01-18 | 2017-07-11 | 广东韩研活性炭制造有限公司 | A kind of activated carbon adsorbed for waste incineration dioxin in flue gas and preparation method thereof |
| WO2017212827A1 (en) * | 2016-06-09 | 2017-12-14 | 花王株式会社 | Detergent composition for hard disk substrates |
| CN108404863A (en) * | 2018-04-04 | 2018-08-17 | 成都达奇环境科技有限公司 | A kind of activated carbon and preparation method thereof for Xi Fu bioxin |
-
2021
- 2021-11-01 CN CN202111281920.1A patent/CN113813920B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017212827A1 (en) * | 2016-06-09 | 2017-12-14 | 花王株式会社 | Detergent composition for hard disk substrates |
| CN106938846A (en) * | 2017-01-18 | 2017-07-11 | 广东韩研活性炭制造有限公司 | A kind of activated carbon adsorbed for waste incineration dioxin in flue gas and preparation method thereof |
| CN108404863A (en) * | 2018-04-04 | 2018-08-17 | 成都达奇环境科技有限公司 | A kind of activated carbon and preparation method thereof for Xi Fu bioxin |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113813920A (en) | 2021-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206980859U (en) | Industrial chemicals grind and drying equipment | |
| CN110560019A (en) | efficient, energy-saving and environment-friendly waste activated carbon regeneration method | |
| CN207576674U (en) | Separation reaction flour mill | |
| CN104001593B (en) | The material-gathering device of horizontal planetary ball mill | |
| CN104388608B (en) | Dry granulation waste heat recovery with grind processing system | |
| CN111729470B (en) | CO for purifying metallurgical waste gas2Cyclic capture system and method | |
| CN112604777A (en) | Superfine powder grinding preparation device and method | |
| CN111121050B (en) | Garbage fly ash dioxin removal system and treatment method thereof | |
| CN113813920B (en) | Activated carbon for adsorbing dioxin in waste incineration flue gas and preparation method thereof | |
| CN104388611B (en) | Dry granulation processes residual neat recovering system | |
| CN105800968A (en) | Device and method for quicklime digestion, dedusting and sewage sludge treatment | |
| CN109569902A (en) | Whirlpool machine | |
| CN109182790A (en) | A kind of rare earth ore process of refinement technique | |
| CN107352569A (en) | It is a kind of new calcium carbonate device efficiently to be prepared based on shell | |
| CN206897073U (en) | A kind of rotary Environmental-protection dust removal device | |
| CN207024842U (en) | A kind of environmentally friendly blast furnace flue gas inertia dust-removing device | |
| CN108714367A (en) | A kind of online self-catalysis denitrification apparatus of sintering flue dust | |
| CN207361803U (en) | It is a kind of new calcium carbonate device efficiently to be prepared based on shell | |
| CN213825143U (en) | Environment-friendly brick production is with even breaker of broken granule size | |
| CN112246601B (en) | Environment-friendly dust removal type integrated equipment | |
| CN210036194U (en) | Rotary flash evaporation dryer | |
| CN210543390U (en) | High-speed centrifugal spray dryer | |
| CN213556111U (en) | Pulse dust collector for flour processing waste gas emission treatment | |
| CN204388087U (en) | Antibiotic bacterium slag energy treatment facility system | |
| CN218034367U (en) | Feeding and dust removing device for rotary kiln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |