CN106040315A - Drying process for cooperating denitration and demercuration catalyst of flue gas coal-fired power plant - Google Patents

Drying process for cooperating denitration and demercuration catalyst of flue gas coal-fired power plant Download PDF

Info

Publication number
CN106040315A
CN106040315A CN201610460414.1A CN201610460414A CN106040315A CN 106040315 A CN106040315 A CN 106040315A CN 201610460414 A CN201610460414 A CN 201610460414A CN 106040315 A CN106040315 A CN 106040315A
Authority
CN
China
Prior art keywords
dried
catalyst
time
drying
drying process
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.)
Pending
Application number
CN201610460414.1A
Other languages
Chinese (zh)
Inventor
孟德海
钱军
陈玲
赵建新
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.)
WUXI HUAGUANG NEW POWER ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
Original Assignee
WUXI HUAGUANG NEW POWER ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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 WUXI HUAGUANG NEW POWER ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd filed Critical WUXI HUAGUANG NEW POWER ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
Priority to CN201610460414.1A priority Critical patent/CN106040315A/en
Publication of CN106040315A publication Critical patent/CN106040315A/en
Pending legal-status Critical Current

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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8628—Processes characterised by a specific catalyst
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8665—Removing heavy metals or compounds thereof, e.g. mercury
    • 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
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08—Heat treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/08—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/10—Temperature; Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases

Abstract

The invention provides a drying process for cooperating a denitration and demercuration catalyst of a flue gas coal-fired power plant. The drying process is capable of effectively improving the product qualified product ratio, and is applicable to industrial production. The drying process comprises the following specific drying steps: aging, putting a honeycomb-type catalyst product subjected to extrusion molding into a control chamber in a drying chamber, and aging at different temperatures, humidity and time; performing primary drying, and performing sectional type drying on the catalyst product after aging is finished, wherein the corresponding time, temperature, humidity and circulating fan frequency of all drying process are different, and primary drying is finsihed after the weight loss ratio of the catalyst product sample reaches up to 14-20%; performing secondary drying, namely after primary drying is finished, unpacking the catalyst product, placing the catalyst product in a secondary drying oven with a temperature range of 58-68 DEG C, performing secondary drying in a circulating hot air forced convection manner, and finishing secondary drying after the weight loss ratio of the catalyst product sample reaches up to 23-28%.

Description

A kind of drying process working in coordination with denitration demercuration catalyst for coal-fired plant flue gas
Technical field
The present invention relates to catalyst preparation technical field, be specially one and work in coordination with denitration demercuration urge for coal-fired plant flue gas The drying process of agent.
Background technology
Along with the development of human social economy and gradually stepping up of living standards of the people, the corresponding environmental pollution produced Problem is day by day serious, and especially atmosphere polluting problem, such as Ozone hole, greenhouse effect, photochemical fog, haze etc., produces this The reason of a little atmosphere polluting problems is mainly fluorinated Organic substance, CO in air2、NOx、Hg0, dust equal size exceeds standard.
And the energy resource structure of China is based on fire coal, and will not change in a short time, then incident is in air NOx、Hg0And SO2Content gradually rises, and atmospheric pollution will be day by day serious, then for the SCR denitration being applied in coal-burning power plant Catalyst, such as honeycomb fashion, corrugated plate dst and board-like catalyst, these a few class catalyst are to removing NOxEffect is notable, but to Hg0's Removal effect is relatively low, only about 30-40%, and according to up-to-date fossil-fuel power plant atmospheric pollutant emission standard requirement, coal-fired Mercury and mercuric compounds discharge capacity was controlled at 30 μ g/m from 1 day January in 2015 by boiler3Hereinafter, there is special pin in the market Catalyst to mercury removal, such as activated carbon, the most essentially single use, is not suitable for answering of coal-burning power plant With, cost of investment is the highest, and the product qualified rate in present stage general denitrating catalyst drying process is higher, can reach 90% with On, and for collaborative denitration demercuration catalyst, the drying process of its correspondence is blank out, due to collaborative denitration demercuration catalyst In in addition to the active substance of original (denitration), also added amount of activated material (demercuration), re-use former denitrating catalyst Drying process, product qualified rate ratio is relatively low, and only about 30%.
Summary of the invention
For the problems referred to above, the invention provides and a kind of work in coordination with being dried of denitration demercuration catalyst for coal-fired plant flue gas Technique, it can be effectively improved the qualification rate of product, and be applicable to industrialized production.
Its technical scheme is such, it is characterised in that: its concrete drying process step is:
Ageing, is put in the cellular catalyst product after extrusion molding in the control room in hothouse, and Aging Temperature is set to 20 DEG C～30 DEG C, ageing humidity is not less than 90%, and digestion time is 16h-30h；
It is dried, after being aged, catalyst prod is carried out stagewise and is dried for I time, in hothouse, then run 100h-140h After check the outward appearance of catalyst prod and dry and cracked situation, after then running 190h-300h in described hothouse, survey it weightless Rate, terminates to be dried for I time after catalyst prod sample weight loss rate reaches 14%～20%；
It is dried for II time, is dried for I time after terminating, catalyst prod is unpacked, and to be positioned over temperature range be 58 DEG C～68 DEG C No. II drying baker in the way of recirculated hot air forced convertion, carry out II time be dried, stay in and run 12h-24h in drying baker Its weight-loss ratio of rear survey, terminates to be dried for II time after catalyst prod sample weight loss rate reaches 23%～28%.
It is further characterized by described hothouse and uses steam indirectly to heat, and described hothouse is dried built with 16 Dolly, equipped with 34～42 catalyst in each described dry dolly, every described catalyst is by the cardboard bag with sponge Dress；
Catalyst prod, after unpacking, is positioned over torr with 6 × 6 arrangement modes by the catalyst prod that described I time is dried after terminating On dish and catalyst prod sample is in the sample lay down location of the superiors, the catalyst prod layer in described 6 × 6 arrangement modes with Separate with described cardboard between Ceng and between every catalyst, leave the interval of 2cm～3cm；During I time is dried, product is divided into 10 Section is dried, described 10 sections be dried in every section be dried the corresponding time be respectively 12h～36h, 14h～25h, 10h～30h, 18h～ 28h, 19h～27h, 9h～26h, 18h～25h, 20h～28h, 22h～30h and 20h～44h；
During I time is dried, product is divided into 10 sections be dried, described 10 sections be dried in every section be dried corresponding temperature value be respectively 25～ 35 DEG C, 28～35 DEG C, 33～39 DEG C, 36-45 DEG C, 36-45 DEG C, 39～49 DEG C, 42～55 DEG C, 44～58 DEG C, 48～62 DEG C and 58～68 DEG C, the temperature initial value before stagewise is dried is 20～30 DEG C；
During I time is dried, product is divided into 10 sections be dried, described 10 sections be dried in every section be dried corresponding humidity value and be respectively 100 ～90%, 100～85%, 95～84%, 90～80%, 85～70%, 75～55%, 65～45%, 58-38%, 39～ 20% and 25～15%, the humidity initial value before stagewise is dried is 100～90%；
During I time is dried, product is divided into 10 sections be dried, described 10 sections be dried in every section be dried corresponding circulating fan frequency values and divide Not Wei 10Hz～24Hz, 15Hz～25Hz, 18Hz～25Hz, 19Hz～25Hz, 20Hz～30Hz, 20Hz～30Hz, 28Hz～ 38Hz, 30Hz～39Hz, 38Hz～49Hz and 38Hz～50Hz, the circulating fan frequency initial value before stagewise is dried is 10Hz～24Hz；
Wherein m0For the catalyst precursor weight when extrusion, i.e. original weight；m1 For the weight of catalyst precursor during detection.
The invention has the beneficial effects as follows, product by ageing, be dried for I time and II time dried, be greatly improved product Qualification rate, it is adaptable to industrialized production.
Detailed description of the invention
A kind of drying process working in coordination with denitration demercuration catalyst for coal-fired plant flue gas, its concrete drying process step It is:
Ageing, the catalyst prod after extrusion molding is put in the control room in hothouse, and Aging Temperature be set to 20 DEG C～ 30 DEG C, ageing humidity is not less than 90%, and digestion time is 16h-30h；Hothouse is by Huanggang City kiln company limited of Hua Yao China and Sweden Producing, hothouse uses steam indirectly to heat, and substantial amounts of moisture in main removal idiosome, hothouse is dried little built with 16 Car, equipped with 36 catalyst in each dry dolly, every catalyst is by the carton package with sponge；Catalyst uses honeycomb Formula catalyst；
It is dried for I time, after being aged, catalyst prod is divided into 10 sections be dried, the time of correspondence, temperature in every section of dry run Degree, humidity and circulating fan frequency are different, check the outward appearance of product and do after then running 100h-140h in hothouse Split situation, as product cracking is then scrapped, after entering kiln high-temperature roasting, pulverize reuse；The most then proceed such as outward appearance to be dried, connect And run after 190h-300h in hothouse, pass through computing formula:Its In, m0For the catalyst precursor weight when extrusion
Amount, i.e. original weight；m1For the weight of catalyst precursor during detection, general catalyst precursor moisture when extrusion exists Between 25-32%, terminate to be dried for I time after outturn sample weight-loss ratio reaches 14～20%, thus the hardness of product increases, machinery Intensity increase not cracky, and when being dried in the drying chamber, if moisture the most up to standard just terminate to be dried for I time produce consequence and mainly have Two: one is that product is softer, is easily broken off in handling process；Two is the most easily to ftracture when II time dry；
It is dried for II time, is dried for I time after terminating, catalyst prod is unpacked, cardboard will be removed by catalyst prod, and with 6 × 6 arrangement modes are positioned on pallet and catalyst sample is in the second location of root on the right side of the superiors, namely catalyst sample At the fixed position of product, the catalyst in 6 × 6 arrangement modes separates with cardboard between layers and leaves between every catalyst The interval of 2cm～3cm；It is right to be then placed in No. II drying baker that temperature range is 58 DEG C～68 DEG C with recirculated hot air pressure The mode of stream carries out II time and is dried, and surveys its weight-loss ratio, treat that outturn sample weight-loss ratio reaches in staying in drying baker after running 12h-24h Terminate after 23%～28% to be dried for II time.
During I time is dried, catalyst prod is divided into 10 sections be dried, 10 sections be dried in every section be dried the corresponding time and be respectively 12h～36h, 14h～25h, 10h～30h, 18h～28h, 19h～27h, 9h～26h, 18h～25h, 20h～28h, 22h～ 30h and 20h～44h；
During I time is dried, catalyst prod is divided into 10 sections be dried, 10 sections be dried in every section be dried corresponding temperature value and be respectively 25 ～35 DEG C, 28～35 DEG C, 33～39 DEG C, 36-45 DEG C, 36-45 DEG C, 39～49 DEG C, 42～55 DEG C, 44～58 DEG C, 48～62 DEG C With 58～68 DEG C, the temperature initial value before stagewise is dried is 20～30 DEG C；
During I time is dried, catalyst prod is divided into 10 sections be dried, 10 sections be dried in every section be dried corresponding humidity value and be respectively 100～90%, 100～85%, 95～84%, 90～80%, 85～70%, 75～55%, 65～45%, 58-38%, 39～ 20% and 25～15%, the humidity initial value before stagewise is dried is 100～90%；
During I time is dried, catalyst prod is divided into 10 sections be dried, 10 sections be dried in every section be dried corresponding circulating fan frequency values It is respectively 10Hz～24Hz, 15Hz～25Hz, 18Hz～25Hz, 19Hz～25Hz, 20Hz～30Hz, 20Hz～30Hz, 28Hz ～38Hz, 30Hz～39Hz, 38Hz～49Hz and 38Hz～50Hz,
Circulating fan frequency initial value before stagewise is dried is 10Hz～24Hz.
Embodiment one
After being aged 16h-30h in the catalyst prod of extrusion molding is put in I hothouse, set I drying parameter such as table 1 institute Showing, the qualification rate being dried end rear catalyst product for I time is 53%.
1 I Drying Technology Parameters of table
Embodiment two
After being aged 16h-30h in the catalyst prod of extrusion molding is put in I hothouse, set I drying parameter such as table 2 institute Showing, the qualification rate being dried end rear catalyst product for I time is 73%.
2 I Drying Technology Parameters of table
Embodiment three
After being aged 16h-30h in the catalyst prod of extrusion molding is put in I hothouse, set I drying parameter such as table 3 institute Showing, the qualification rate being dried end rear catalyst product for I time is 82%.
3 I Drying Technology Parameters of table
After being dried end due to catalyst prod at I time, II time dry qualification rate is 100%, in the above-described embodiments The most just be not added with II dry description, the most to sum up, collaborative denitration demercuration catalyst prod through ageing, be dried for I time, II time Dried product qualified rate can be effectively improved.

Claims (8)

1. the drying process working in coordination with denitration demercuration catalyst for coal-fired plant flue gas, it is characterised in that: it is specifically dried Processing step is:
Ageing, is put in the cellular catalyst product after extrusion molding in the control room in hothouse, and Aging Temperature is set to 20 DEG C ~ 30 DEG C, ageing humidity is not less than 90%, and digestion time is 16 h-30h；
I time be dried, after be aged, catalyst prod is carried out stagewise and is dried, then in hothouse operation 100h- Check the outward appearance of catalyst prod and dry and cracked situation after 140h, after then running 190h-300h in described hothouse, survey it Weight-loss ratio, terminates to be dried for I time after catalyst prod sample weight loss rate reaches 14% ~ 20%；
It is dried for II time, is dried for I time after terminating, catalyst prod is unpacked, and to be positioned over temperature range be 58 DEG C ~ 68 DEG C No. II drying baker carries out in the way of recirculated hot air forced convertion II time be dried, after running 12h-24h in staying in drying baker Survey its weight-loss ratio, after catalyst prod sample weight loss rate reaches 23% ~ 28%, terminate II time be dried.
A kind of drying process working in coordination with denitration demercuration catalyst for coal-fired plant flue gas the most according to claim 1, its Being characterised by: described hothouse uses steam indirectly to heat, described hothouse is built with 16 dry dollies, and each is described dry Equipped with 34 ~ 42 catalyst in dolly, every described catalyst is by the carton package with sponge.
A kind of drying process working in coordination with denitration demercuration catalyst for coal-fired plant flue gas the most according to claim 1, its It is characterised by: catalyst prod, after unpacking, is placed by the catalyst prod that described I time is dried after terminating with 6 × 6 arrangement modes On pallet and catalyst prod sample is in the sample lay down location of the superiors, the catalyst prod in described 6 × 6 arrangement modes Separate with cardboard between layers and between every catalyst, leave the interval of 2cm ~ 3cm.
A kind of drying process working in coordination with denitration demercuration catalyst for coal-fired plant flue gas the most according to claim 1, its Be characterised by: during I time is dried, product be divided into 10 sections be dried, described 10 sections be dried in every section be dried the corresponding time and be respectively 12 h ~36h、14 h ~25h、10 h ~30h、18 h ~28h、19 h ~27h、9 h ~26h、18 h ~25h、20 h ~ 28h, 22 h ~ 30h and 20 h ~ 44h.
A kind of drying process working in coordination with denitration demercuration catalyst for coal-fired plant flue gas the most according to claim 1, its Be characterised by: during I time is dried, product be divided into 10 sections be dried, described 10 sections be dried in every section be dried corresponding temperature value respectively It it is 25 ~ 35 DEG C, 28 ~ 35 DEG C, 33 ~ 39 DEG C, 36-45 DEG C, 36-45 DEG C, 39 ~ 49 DEG C, 42 ~ 55 DEG C, 44 ~ 58 DEG C, 48 ~ 62 DEG C and 58 ~ 68 DEG C, the temperature initial value before stagewise is dried is 20 ~ 30 DEG C.
A kind of drying process working in coordination with denitration demercuration catalyst for coal-fired plant flue gas the most according to claim 1, its Be characterised by: during I time is dried, product be divided into 10 sections be dried, described 10 sections be dried in every section be dried corresponding humidity value respectively It is 100 ~ 90%, 100 ~ 85%, 95 ~ 84%, 90 ~ 80%, 85 ~ 70%, 75 ~ 55%, 65 ~ 45%, 58-38%, 39 ~ 20% and 25 ~ 15%, Humidity initial value before stagewise is dried is 100 ~ 90%.
A kind of drying process working in coordination with denitration demercuration catalyst for coal-fired plant flue gas the most according to claim 1, its Be characterised by: during I time is dried, product be divided into 10 sections be dried, described 10 sections be dried in every section be dried corresponding circulating fan frequency Rate value be respectively 10 Hz ~ 24Hz, 15 Hz ~ 25Hz, 18 Hz ~ 25Hz, 19 Hz ~ 25Hz, 20 Hz ~ 30Hz, 20 Hz ~ 30Hz, 28 Hz ~ 38Hz, 30 Hz ~ 39Hz, 38 Hz ~ 49Hz and 38 Hz ~ 50Hz, the circulated air before stagewise is dried Unit frequency initial value is 10 Hz ~ 24Hz.
A kind of drying process working in coordination with denitration demercuration catalyst for coal-fired plant flue gas the most according to claim 1, its It is characterised by: the computing formula of described weight-loss ratio is (m0 -m1)/m0, wherein m0For the catalyst precursor weight when extrusion Amount, i.e. original weight；m1For the weight of catalyst precursor during detection.
CN201610460414.1A 2016-06-23 2016-06-23 Drying process for cooperating denitration and demercuration catalyst of flue gas coal-fired power plant Pending CN106040315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610460414.1A CN106040315A (en) 2016-06-23 2016-06-23 Drying process for cooperating denitration and demercuration catalyst of flue gas coal-fired power plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610460414.1A CN106040315A (en) 2016-06-23 2016-06-23 Drying process for cooperating denitration and demercuration catalyst of flue gas coal-fired power plant

Publications (1)

Publication Number Publication Date
CN106040315A true CN106040315A (en) 2016-10-26

Family

ID=57167912

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610460414.1A Pending CN106040315A (en) 2016-06-23 2016-06-23 Drying process for cooperating denitration and demercuration catalyst of flue gas coal-fired power plant

Country Status (1)

Country Link
CN (1) CN106040315A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102872919A (en) * 2012-09-27 2013-01-16 浙江天蓝环保技术股份有限公司 Preparation process of honeycomb SCR (selective catalytic reduction) denitration catalyst
CN103623806A (en) * 2013-09-24 2014-03-12 无锡华光新动力环保科技股份有限公司 SCR (Selective Catalytic Reduction) honeycombed denitration catalyst production technology

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102872919A (en) * 2012-09-27 2013-01-16 浙江天蓝环保技术股份有限公司 Preparation process of honeycomb SCR (selective catalytic reduction) denitration catalyst
CN103623806A (en) * 2013-09-24 2014-03-12 无锡华光新动力环保科技股份有限公司 SCR (Selective Catalytic Reduction) honeycombed denitration catalyst production technology

Similar Documents

Publication Publication Date Title
CN203710882U (en) Collecting and purifying device for waste gases during production of density board
CN106622665A (en) Electrostatic dust removal device with pressurized cyclic adsorption function
CN204911174U (en) Adsorption dryer is retrieved to regeneration gas
CN204973496U (en) Rotary dehumidifier for wind generating set
CN107670411A (en) A kind of active carbon absorption technology
CN202166286U (en) Corrugated board drying device
CN205593434U (en) Full -automatic fireworks and crackers drying -machine
CN106040315A (en) Drying process for cooperating denitration and demercuration catalyst of flue gas coal-fired power plant
CN212006611U (en) Corrugated board drying system
CN204329553U (en) A kind of chrysanthemum dryer energy saver
CN204325206U (en) One possesses high efficiency starch dryer
CN207797606U (en) A kind of novel energy-conserving dryer device
CN207180282U (en) Possess to dive and roll the drier of lump material function
CN108020053A (en) A kind of novel energy-conserving dryer device
CN203110514U (en) Ink drying device
CN107776192A (en) A kind of printing packaging drying unit
CN207708776U (en) A kind of movable type cleaning equipment for waste organic gas
CN218545235U (en) Energy-conserving stoving room is used in packaging material production
CN203595376U (en) Equipment for improving drying effect of electronic packing materials
CN207487355U (en) A kind of solar energy drying dehumidification system
CN206173197U (en) Sludge drying device
CN206121409U (en) Purification device
CN212481960U (en) A drying equipment for enamel processing
CN202599017U (en) Fluidized bed system dried by hot air
CN217844549U (en) Quick drying equipment is used in paper article production

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20161026

RJ01 Rejection of invention patent application after publication