CN104121769B - The drying means of honeycomb fashion denitration ceramic catalyst - Google Patents
The drying means of honeycomb fashion denitration ceramic catalyst Download PDFInfo
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- CN104121769B CN104121769B CN201310621949.9A CN201310621949A CN104121769B CN 104121769 B CN104121769 B CN 104121769B CN 201310621949 A CN201310621949 A CN 201310621949A CN 104121769 B CN104121769 B CN 104121769B
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Abstract
The invention discloses the drying means of a kind of honeycomb fashion denitration ceramic catalyst, belong to the catalyst technical field of selective catalytic reduction, this drying means, including the first dry run utilizing drying device to be dried by honeycomb fashion denitration ceramic catalyst and the second dry run utilizing drying device to be dried by described honeycomb fashion denitration ceramic catalyst; The circulation of whole dry run carries out, and produces without waste gas, it is to avoid contaminated environment; And taking full advantage of heat energy, drying capacity is strong, reaches 91% through the dry qualification rate of long-term experiment, not only saved the energy, also reduced production cost.
Description
Technical field
The present invention relates to the catalyst technical field of selective catalytic reduction, the drying means of especially a kind of honeycomb fashion denitration ceramic catalyst.
Background technology
In the process of thermal power plant's generating, the flue gas containing oxynitride NOx can be produced, and oxynitride NOxBeing one of primary pollution source causing atmospheric pollution at present, current thermal power plant many employings selective catalytic reduction reduces the pollution of nitrogen oxides. Honeycomb fashion denitration ceramic catalyst is as one of the core technology of selective catalytic reduction system, and its cost generally accounts for 30% the 50% of denitrification apparatus gross investment. Wherein, this catalyst drying means in preparation process and drying device determine the dimensional stability of prepared honeycomb fashion denitration ceramic catalyst, thus affecting catalytic effect. The drying means of traditional honeycomb fashion denitration ceramic catalyst is to adopt the situation controlling temperature and humidity to dry next time, and energy consumption is big, drying time is long. Later it has been proposed that adopt the mode of microwave drying, dry rate is fast, effective, but treating capacity is little.
Summary of the invention
The technical problem to be solved is to provide the drying means of a kind of honeycomb fashion denitration ceramic catalyst, the drying means of this honeycomb fashion denitration ceramic catalyst can solve that dry run energy consumption is big, drying time length and the little problem for the treatment of capacity.
In order to solve the problems referred to above, the technical solution adopted in the present invention is: the drying means of this honeycomb fashion denitration ceramic catalyst, including the first dry run utilizing drying device to be dried by honeycomb fashion denitration ceramic catalyst and the second dry run utilizing drying device to be dried by described honeycomb fashion denitration ceramic catalyst; Described drying device includes drying unit, and described drying unit has air inlet and air outlet, and the drying unit of described first dry run is hothouse, and the drying unit of described second dry run is drying baker;
Its dry run is as follows:
First dry run:
A, honeycomb fashion denitration ceramic catalyst is positioned in hothouse;
B, by drying device, hot-air is sent in hothouse from the air intake vent of hothouse, keeping indoor temperature is 50 DEG C～70 DEG C, and humidity is 45%～65%, and the time is 4 days;
Second dry run:
A, the honeycomb fashion denitration ceramic catalyst of the first dry run gained is positioned in drying baker;
B, by drying device, hot-air is sent into drying baker from the air intake vent of drying baker, in holding tank, temperature is 100 DEG C～120 DEG C, until described honeycomb fashion denitration ceramic catalyst moisture content, less than 2%, to obtain final product.
In the technical scheme of the drying means of above-mentioned honeycomb fashion denitration ceramic catalyst, technical scheme is it may also is that the air inlet of described drying unit connects the air outlet of an aerator by electromagnetic valve more specifically, the air inlet of described aerator is communicated in the air outlet of an electric heater, the air inlet of described electric heater connects the heating end outlet of a heat exchanger, and the heat source side inlet communication of described heat exchanger is in the air outlet of drying unit; Described aerator, described electromagnetic valve and described electric heater electrically connect with electric cabinet respectively.
Owing to have employed technique scheme, the present invention compared with prior art has the advantages that
1, temperature, humidity, pressure etc. are adjusted accurately according to practical situation by the present invention by electric cabinet, make inside and outside prepared honeycomb fashion denitration ceramic catalyst uniform and indeformable, reach the drying effect of the best; Automaticity is high, product quality is high.
2, the present invention adds heat exchanger between the air outlet and electric heater of drying unit, will be heated by the cold air in heat exchanger from drying baker steam out by heat exchanger; Drying unit steam out becomes the water heat source side outlet outflow from heat exchanger on the one hand, produces without waste gas, it is to avoid contaminated environment; Air after heating is again introduced into drying unit by circulating-heating on the other hand, takes full advantage of heat energy, has not only saved the energy, also reduced production cost.
3, the circulation of whole dry run carries out, and drying capacity is strong, reaches more than 91% through the dry qualification rate of long-term experiment.
Accompanying drawing explanation
Fig. 1 is the key wiring diagram of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the invention will be further described:
The drying means of this honeycomb fashion denitration ceramic catalyst, including the first dry run utilizing drying device to be dried by honeycomb fashion denitration ceramic catalyst and the second dry run utilizing drying device to be dried by honeycomb fashion denitration ceramic catalyst; As shown in Figure 1, drying device includes drying unit 1, drying unit 1 has air inlet 1a and air outlet 1b, the air inlet 1a of drying unit 1 connects the air outlet 3b of an aerator 3 by electromagnetic valve 2, the air inlet 3a of aerator 3 is communicated in the air outlet 4b of an electric heater 4, the air inlet 4a of electric heater 4 connects the heating end outlet 5c of a heat exchanger 5, the heating end import 5b of heat exchanger 5 and atmosphere, the heat source side import 5a of heat exchanger 5 is communicated in the air outlet 1b of drying unit 1, and the heat source side outlet 5c of heat exchanger 5 is communicated in outdoor; Aerator, electromagnetic valve, electric heater electrically connect with electric cabinet respectively; The drying unit of the first dry run is hothouse, and the drying unit of the second dry run is drying baker;
Embodiment one
Its dry run is as follows:
First dry run:
A, the honeycomb fashion denitration ceramic catalyst formed body of preparation is positioned in hothouse;
B, by aerator, air quantity is 4000m3/ h, sends in hothouse by hot-air from the air intake vent of hothouse, and keeping indoor temperature is 50 DEG C, and humidity is 65%, and the time is 4 days;
This process is extruded the Free water in honeycomb fashion denitration ceramic catalyst honeycomb shape, and is taken away gradually;
Second dry run:
A, the honeycomb fashion denitration ceramic catalyst honeycomb shape of the first dry run gained is positioned in drying baker,
B, by aerator, hot-air is sent into drying baker from the air intake vent of drying baker, in holding tank, temperature is 100 DEG C, until described honeycomb fashion denitration ceramic catalyst moisture content is 2%, to obtain final product.
In this process, hot blast is through honeycomb fashion denitration ceramic catalyst honeycomb hole, is progressively taken away by the absorption water remained in its hole, makes the honeycomb fashion denitration ceramic catalyst honeycomb shape of the first dry run be further dried.
Embodiment two
Its dry run is as follows:
First dry run:
A, the honeycomb fashion denitration ceramic catalyst formed body of preparation is positioned in hothouse;
B, by aerator, air quantity is 4000m3/ h, sends in hothouse by hot-air from the air intake vent of hothouse, and keeping indoor temperature is 55 DEG C, and humidity is 60%, and the time is 4 days;
This process is extruded the Free water in honeycomb fashion denitration ceramic catalyst honeycomb shape, and is taken away gradually;
Second dry run:
A, the honeycomb fashion denitration ceramic catalyst honeycomb shape of the first dry run gained is positioned in drying baker,
B, by aerator, hot-air is sent into drying baker from the air intake vent of drying baker, in holding tank, temperature is 105 DEG C, until described honeycomb fashion denitration ceramic catalyst moisture content is 1.8%, to obtain final product.
In this process, hot blast is through honeycomb fashion denitration ceramic catalyst honeycomb hole, is progressively taken away by the absorption water remained in its hole, makes the honeycomb fashion denitration ceramic catalyst honeycomb shape of the first dry run be further dried.
Embodiment three
Its dry run is as follows:
First dry run:
A, the honeycomb fashion denitration ceramic catalyst formed body of preparation is positioned in hothouse;
B, by aerator, air quantity is 4000m3/ h, sends in hothouse by hot-air from the air intake vent of hothouse, and keeping indoor temperature is 60 DEG C, and humidity is 55%, and the time is 4 days;
This process is extruded the Free water in honeycomb fashion denitration ceramic catalyst honeycomb shape, and is taken away gradually;
Second dry run:
A, the honeycomb fashion denitration ceramic catalyst honeycomb shape of the first dry run gained is positioned in drying baker,
B, by aerator, hot-air is sent into drying baker from the air intake vent of drying baker, in holding tank, temperature is 110 DEG C, until described honeycomb fashion denitration ceramic catalyst moisture content is 1.5%, to obtain final product.
In this process, hot blast is through honeycomb fashion denitration ceramic catalyst honeycomb hole, is progressively taken away by the absorption water remained in its hole, makes the honeycomb fashion denitration ceramic catalyst honeycomb shape of the first dry run be further dried.
Embodiment four
Its dry run is as follows:
First dry run:
A, the honeycomb fashion denitration ceramic catalyst formed body of preparation is positioned in hothouse;
B, by aerator, air quantity is 4000m3/ h, sends in hothouse by hot-air from the air intake vent of hothouse, and keeping indoor temperature is 65 DEG C, and humidity is 50%, and the time is 4 days;
This process is extruded the Free water in honeycomb fashion denitration ceramic catalyst honeycomb shape, and is taken away gradually;
Second dry run:
A, the honeycomb fashion denitration ceramic catalyst honeycomb shape of the first dry run gained is positioned in drying baker,
B, by aerator, hot-air is sent into drying baker from the air intake vent of drying baker, in holding tank, temperature is 115 DEG C, until described honeycomb fashion denitration ceramic catalyst moisture content is 1.7%, to obtain final product.
In this process, hot blast is through honeycomb fashion denitration ceramic catalyst honeycomb hole, is progressively taken away by the absorption water remained in its hole, makes the honeycomb fashion denitration ceramic catalyst honeycomb shape of the first dry run be further dried.
Embodiment five
Its dry run is as follows:
First dry run:
A, the honeycomb fashion denitration ceramic catalyst formed body of preparation is positioned in hothouse;
B, by aerator, air quantity is 4000m3/ h, sends in hothouse by hot-air from the air intake vent of hothouse, and keeping indoor temperature is 70 DEG C, and humidity is 45%, and the time is 4 days;
This process is extruded the Free water in honeycomb fashion denitration ceramic catalyst honeycomb shape, and is taken away gradually;
Second dry run:
A, the honeycomb fashion denitration ceramic catalyst honeycomb shape of the first dry run gained is positioned in drying baker,
B, by aerator, hot-air is sent into drying baker from the air intake vent of drying baker, in holding tank, temperature is 120 DEG C, until described honeycomb fashion denitration ceramic catalyst moisture content is 1.6%, to obtain final product.
In this process, hot blast is through honeycomb fashion denitration ceramic catalyst honeycomb hole, is progressively taken away by the absorption water remained in its hole, makes the honeycomb fashion denitration ceramic catalyst honeycomb shape of the first dry run be further dried.
Claims (2)
1. the drying means of a honeycomb fashion denitration ceramic catalyst, it is characterised in that: include the first dry run utilizing drying device to be dried by honeycomb fashion denitration ceramic catalyst and the second dry run utilizing drying device to be dried by described honeycomb fashion denitration ceramic catalyst; Described drying device includes drying unit (1), and described drying unit (1) has air inlet (1a) and air outlet (1b), and the drying unit of described first dry run is hothouse, and the drying unit of described second dry run is drying baker;
Its dry run is as follows:
First dry run:
A, honeycomb fashion denitration ceramic catalyst is positioned in hothouse;
B, by drying device, hot-air is sent in hothouse from the air intake vent of hothouse, keeping indoor temperature is 50 DEG C～70 DEG C, and humidity is 45%～65%, and the time is 4 days;
Second dry run:
A, the honeycomb fashion denitration ceramic catalyst of the first dry run gained is positioned in drying baker;
B, by drying device, hot-air is sent into drying baker from the air intake vent of drying baker, in holding tank, temperature is 100 DEG C～120 DEG C, until described honeycomb fashion denitration ceramic catalyst moisture content, less than 2%, to obtain final product.
2. the drying means of honeycomb fashion denitration ceramic catalyst according to claim 1, it is characterized in that: the air inlet (1a) of described drying unit (1) connects the air outlet (3b) of an aerator (3) by electromagnetic valve (2), the air inlet (3a) of described aerator (3) is communicated in the air outlet (4b) of an electric heater (4), the air inlet (4a) of described electric heater (4) connects heating end outlet (5c) of a heat exchanger (5), and the heat source side import (5a) of described heat exchanger is communicated in the air outlet (1b) of drying unit (1); Described aerator (3), described electromagnetic valve (2) and described electric heater (4) electrically connect with electric cabinet respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310621949.9A CN104121769B (en) | 2013-11-30 | 2013-11-30 | The drying means of honeycomb fashion denitration ceramic catalyst |
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| CN201310621949.9A CN104121769B (en) | 2013-11-30 | 2013-11-30 | The drying means of honeycomb fashion denitration ceramic catalyst |
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| CN104121769A CN104121769A (en) | 2014-10-29 |
| CN104121769B true CN104121769B (en) | 2016-06-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104596229A (en) * | 2015-02-12 | 2015-05-06 | 桐乡市田野机械科技有限公司 | Fresh chrysanthemum flower drying device |
| US11168033B2 (en) * | 2017-03-24 | 2021-11-09 | Ngk Insulators, Ltd. | Method for drying columnar honeycomb formed body and method for producing columnar honeycomb structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988000678A1 (en) * | 1986-07-11 | 1988-01-28 | Max Wagner | Process and device for drying ceramic hollow bodies |
| CN1845816A (en) * | 2003-09-02 | 2006-10-11 | 日本碍子株式会社 | Method and apparatus for drying honeycomb formed article |
| CN201731732U (en) * | 2010-07-09 | 2011-02-02 | 中钢集团洛阳耐火材料研究院有限公司 | Energy-saving fiber drying kiln |
| CN102345970A (en) * | 2011-08-31 | 2012-02-08 | 江苏峰业电力环保集团有限公司 | Denitration catalyst drying apparatus |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4103984B2 (en) * | 2001-01-16 | 2008-06-18 | 株式会社デンソー | Method for manufacturing honeycomb molded body and drying apparatus |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988000678A1 (en) * | 1986-07-11 | 1988-01-28 | Max Wagner | Process and device for drying ceramic hollow bodies |
| CN1845816A (en) * | 2003-09-02 | 2006-10-11 | 日本碍子株式会社 | Method and apparatus for drying honeycomb formed article |
| CN201731732U (en) * | 2010-07-09 | 2011-02-02 | 中钢集团洛阳耐火材料研究院有限公司 | Energy-saving fiber drying kiln |
| CN102345970A (en) * | 2011-08-31 | 2012-02-08 | 江苏峰业电力环保集团有限公司 | Denitration catalyst drying apparatus |
| 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 |
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