CN109745860A - A kind of novel coupled desulfurization trap and preparation method thereof - Google Patents
A kind of novel coupled desulfurization trap and preparation method thereof Download PDFInfo
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- CN109745860A CN109745860A CN201711063976.3A CN201711063976A CN109745860A CN 109745860 A CN109745860 A CN 109745860A CN 201711063976 A CN201711063976 A CN 201711063976A CN 109745860 A CN109745860 A CN 109745860A
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Abstract
The invention discloses a kind of novel coupled desulfurization traps and preparation method thereof, the coupled desulfurization trap is mainly by high temperature desulfurizing material, three moderate temperature desulphurization material, low-temp desulfurization material parts form, as mass fraction, by 20 ~ 30% high temperature carbonate material, 40 ~ 60% medium temperature metal oxide materials and the honeycomb that forms of 10 ~ 20% low temperature C-base composte materials, the high temperature desulfurizing material is selected from CaCO3,MgCO3,K2CO3,Na2CO3Etc. cheap carbonate material, moderate temperature desulphurization material is selected from MnO2, Fe2O3,CaO,CuO,CeO2Equal metal oxide materials, low-temp desulfurization material is selected from the composite material of metal oxide and active carbon, the present invention has coupled the high-efficiency desulfurization material under different temperatures section, and diesel engine vent gas desulfurization trap is made to have excellent desulfurization performance under high, normal, basic temperature range (50 ~ 650 DEG C).Improve the defect that can not remain high desulfurization efficiency under wide temperature range applied to the dry type desulfurizing trap of diesel engine vent gas at present.
Description
Technical field
The present invention relates to diesel engine vent gas field of purification, and in particular to a kind of dry type desulfurizing filter and preparation method thereof.
Background technique
Special attention is received from the sulfur dioxide of diesel power plant and ship combustion emission, main cause has
Two: Sulfur Dioxide On Human health and environment is harmful；Sulfur dioxide can reduce the work of the catalyst of removing oxynitrides
Property.In order to solve these problems caused by the sulfur dioxide largely discharged from diesel engine vent gas, scholars are for removing dioxy
Change sulphur paid great effort and propose a kind of compact sulfur dioxide trap be placed in removing nitrogen oxidation close
The sulfur dioxide of the catalyst of object come to capture in tail gas is so as to avoid sulfur dioxide for removing oxynitrides catalysis
The toxic action of agent.
It is in imperfect combustion of the initial stage due to diesel oil of igniting in diesel engine, the temperature of diesel engine vent gas is in 50
DEG C in 200 DEG C of this relatively low temperature ranges, when diesel engine is in running order, the temperature of diesel engine vent gas is 200
DEG C in 650 DEG C of this temperature ranges, therefore, the temperature of diesel engine vent gas will be in 50 DEG C to 650 DEG C this very wide temperature
In section.
Currently based on some basic research, experiment discovery calcium carbonate has good desulfurization performance under the conditions of 650 DEG C, however
Since the influence of carbonate suspension decomposition rate causes the desulfurization rate of calcium carbonate to significantly reduce under the conditions of temperature is lower than 450 DEG C；
The desulphurization reaction of metal oxide be () and its temperature at 200 DEG C to 450 DEG C
There is extraordinary desulfurization performance under section；Carbon-based material has good desulfurization performance at 200 DEG C or so.However, these grind
The sulfur removal material studied carefully can not remain good desulfurization performance in 50 DEG C to 650 DEG C this very wide temperature ranges.
Summary of the invention
The object of the present invention is to provide a kind of novel coupled desulfurization traps and preparation method thereof, for solving current desulfurization
The problem of material can not remain good desulfurization performance in 50 DEG C to 650 DEG C this very wide temperature ranges.
The present invention is achieved by the following technical programs:
A kind of novel coupled desulfurization trap, it is characterised in that the coupled desulfurization trap is by 20 ~ 30% high temperature carbonate material
Material, 40 ~ 60% medium temperature metal oxide materials and the cellular devices of 10 ~ 20% low temperature C-base composte materials composition, the high temperature
Sulfur removal material is selected from CaCO3, MgCO3, K2CO3, Na2CO3Etc. cheap carbonate material, moderate temperature desulphurization material is selected from
MnO2, Fe2O3, CaO, CuO, CeO2Equal metal oxide materials, low-temp desulfurization material are selected from metal oxide and active carbon
Composite material；Preparation method includes the following steps:
A, a certain amount of high temperature, medium temperature, low-temp desulfurization material is weighed to be respectively placed in three different beakers, by sulfur removal material with
Binder 7-9:1-3 in mass ratio weighs a certain amount of binder and is directed respectively into beaker and mixes, and suitable water is then added,
It is uniformly mixed；
B, the resulting three kinds of high temperature of step a, medium temperature, low-temp desulfurization mixture 2-3:6-7:1 in mass ratio are successively added in mold,
It is compacted under the pressure of 10 ~ 100kN, is squeezed out by extrusion die and machined honeycomb porous structure is made；
C, the resulting cellular material of step b obtains honeycomb coupled desulfurization filter in the at a temperature of drying and moulding of 393K.
Air inlet in the coupled desulfurization trap is high temperature desulfurizing material, and gas outlet is low-temp desulfurization material；It is described
Silica solution, carboxymethyl cellulose etc. are used as binder.
Compared with traditional dry type desulfurizing trap, the present invention has coupled the sulfur removal material in different temperatures section, desulfurization effect
Rate significantly improves.
Detailed description of the invention:
Fig. 1 is the curve graph that desulfurization degree of the invention changes with desulfurization temperature.
Fig. 2 is the schematic diagram of novel coupled desulfurization trap.
Specific embodiment:
It is to further explanation of the invention, rather than limiting the invention below.
Embodiment 1: a kind of novel coupled desulfurization trap, by high temperature desulfurizing material C aCO3, moderate temperature desulphurization material MnO2, it is low
Warm sulfur removal material MnO2/ absorbent charcoal composite material and binder carboxymethyl cellulose composition, preparation method are as follows:
By 2g CaCO3、6g MnO2With 1g MnO2/ active carbon is mutually mixed with 0.2g, 0.6g and 0.1g carboxymethyl cellulose respectively
It closes, is then respectively adding the water of 5 ml, be uniformly mixed it with glass bar stirring；
It is squeezed 2. the mixture after stirring is filled in metalware, wherein pressure is 10 kN；
3. being processed into honeycomb with numerically-controlled machine tool；
4. then putting it into 393K drying and moulding in air dry oven, coupled desulfurization filter is made.
Fig. 1 is the curve graph that the desulfurization degree of the coupled desulfurization trap of the present embodiment changes with desulfurization temperature.
As can be seen from the figure for coupled desulfurization trap at 50 DEG C to 650 DEG C of wide temperature range, desulfurization degree is close
100%。
Embodiment 2: a kind of novel coupled desulfurization trap, by high temperature desulfurizing material MgCO3, moderate temperature desulphurization material C eO2, it is low
Warm sulfur removal material CeO2/ absorbent charcoal composite material and binder carboxymethyl cellulose composition, preparation method are as follows:
By 2g MgCO3、6g CeO2With 1g CeO2/ active carbon is mutually mixed with 0.2g, 0.6g and 0.1g carboxymethyl cellulose respectively
It closes, is then respectively adding the water of 5 ml, be uniformly mixed it with glass bar stirring；
It is squeezed 2. the mixture after stirring is filled in metalware, wherein pressure is 10 kN；
3. being processed into honeycomb with numerically-controlled machine tool；
4. then putting it into 393K drying and moulding in air dry oven, coupled desulfurization filter is made.
Embodiment 3: a kind of novel coupled desulfurization trap, by high temperature desulfurizing material C aCO3, moderate temperature desulphurization material MnO2, it is low
Warm sulfur removal material MnO2/ absorbent charcoal composite material and binder carboxymethyl cellulose composition, preparation method are as follows:
By 3g CaCO3、7g MnO2With 1g MnO2/ active carbon is mutually mixed with 0.9g, 2.1g and 0.3g carboxymethyl cellulose respectively
It closes, is then respectively adding the water of 10ml, be uniformly mixed it with glass bar stirring；
It is squeezed 2. the mixture after stirring is filled in metalware, wherein pressure is 100kN；
3. being processed into honeycomb with numerically-controlled machine tool；
4. then putting it into 393K drying and moulding in air dry oven, coupled desulfurization filter is made.
Embodiment 4: a kind of novel coupled desulfurization trap, by high temperature desulfurizing material C aCO3, moderate temperature desulphurization material MnO2, it is low
Warm sulfur removal material MnO2/ absorbent charcoal composite material and binder carboxymethyl cellulose composition, preparation method are as follows:
By 2.5g CaCO3、6.5g MnO2With 1g MnO2/ active carbon respectively with 0.5g, 1.3g and 0.2g carboxymethyl cellulose
It mixes, is then respectively adding the water of 8ml, be uniformly mixed it with glass bar stirring；
It is squeezed 2. the mixture after stirring is filled in metalware, wherein pressure is 50kN；
3. being processed into honeycomb with numerically-controlled machine tool；
4. then putting it into 393K drying and moulding in air dry oven, coupled desulfurization filter is made.
Embodiment 5: a kind of novel coupled desulfurization trap, by high temperature desulfurizing material MgCO3, moderate temperature desulphurization material MnO2, it is low
Warm sulfur removal material CeO2/ absorbent charcoal composite material and binder carboxymethyl cellulose composition, preparation method are as follows:
By 2.5g MgCO3、7g MnO2With 1g CeO2/ active carbon respectively with 0.5g, 2.1g and 0.2g carboxymethyl cellulose phase
Mixing, is then respectively adding the water of 10ml, is uniformly mixed it with glass bar stirring；
It is squeezed 2. the mixture after stirring is filled in metalware, wherein pressure is 80kN；
3. being processed into honeycomb with numerically-controlled machine tool；
4. then putting it into 393K drying and moulding in air dry oven, coupled desulfurization filter is made.
Claims (2)
1. a kind of novel coupled desulfurization trap, it is characterised in that the coupled desulfurization trap is by 20 ~ 30% high temperature carbonate
Material, 40 ~ 60% medium temperature metal oxide materials and the cellular devices of 10 ~ 20% low temperature C-base composte materials composition, the height
Warm sulfur removal material is selected from CaCO3, MgCO3, K2CO3, Na2CO3Etc. cheap carbonate material, the choosing of moderate temperature desulphurization material
From MnO2, Fe2O3, CaO, CuO, CeO2Equal metal oxide materials, low-temp desulfurization material are selected from metal oxide and activity
The composite material of charcoal；
A kind of novel coupled desulfurization trap, preparation method includes the following steps:
A, high temperature, medium temperature, low-temp desulfurization material are mixed and added into suitable water with binder 7-9:1-3 in mass ratio respectively,
It is uniformly mixed；
B, the resulting three kinds of high temperature of step a, medium temperature, low-temp desulfurization mixture 2-3:6-7:1 in mass ratio are successively added in mold,
It is compacted under the pressure of 10 ~ 100kN, is squeezed out by extrusion die and machined honeycomb porous structure is made；
C, the resulting cellular material of step b obtains honeycomb coupled desulfurization filter in the at a temperature of drying and moulding of 393K.
2. a kind of novel coupled desulfurization trap according to claim 1 or 2 and preparation method thereof, which is characterized in that institute
Stating the air inlet in coupled desulfurization trap is high temperature desulfurizing material, and gas outlet is low-temp desulfurization material.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115634713A (en) * | 2022-10-26 | 2023-01-24 | 浙江誉衡环保科技有限公司 | Desulfurization synergist for flue gas desulfurization and preparation method thereof |
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| CN115634713A (en) * | 2022-10-26 | 2023-01-24 | 浙江誉衡环保科技有限公司 | Desulfurization synergist for flue gas desulfurization and preparation method thereof |
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