CN106554832A - A kind of preparation method of concave-convex bar methane desulfurizing dessicant - Google Patents
A kind of preparation method of concave-convex bar methane desulfurizing dessicant Download PDFInfo
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- CN106554832A CN106554832A CN201510614378.5A CN201510614378A CN106554832A CN 106554832 A CN106554832 A CN 106554832A CN 201510614378 A CN201510614378 A CN 201510614378A CN 106554832 A CN106554832 A CN 106554832A
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Abstract
The invention discloses a kind of preparation method of concave-convex bar methane desulfurizing dessicant, the main points of its technical scheme, the preparation method of concave-convex bar methane desulfurizing dessicant is：Oxidation processes, dispensing crushing, immersion extruding, dry in the sun pulverizing, pelletize dry in the sun, roasting are sieved, are packaged as finished product.The dispensing of concave-convex bar methane desulfurizing dessicant is made up of attapulgite clay, waste iron filing and dolomite.When the hydrogen sulfide in biogas and other harmful gass pass through from concave-convex bar methane desulfurizing dessicant, the hydrogen sulfide in biogas generates iron sulfide and calcium sulfide, and vapor is attracted to inside granule.The preparation method of concave-convex bar methane desulfurizing dessicant has simple production process, with low cost and the characteristics of do not pollute, and is conducive to popularization and application, the preparation method of concave-convex bar methane desulfurizing dessicant to be applied to the desulfurizing dessicant of production biogas, natural gas and coal gas.
Description
Technical field
The present invention relates to biogas, and in particular to a kind of preparation method of concave-convex bar methane desulfurizing dessicant.
Background technology
The main component of biogas has methane, carbon dioxide and hydrogen sulfide, also a small amount of ammonia, nitrogen, hydrogen and carbon monoxide etc..
Hydrogen sulfide in biogas has stench egg flavor, is strong neurotoxic substance, and Jing respiratory systems are entered in blood, systemic toxicity profiles can be caused to react when oxidation is had little time, as the increase of concentration of hydrogen sulfide can cause respiratory paralysis, death by suffocation.The sulfur dioxide that sulfureted hydrogen burning is generated is a kind of very strong gas of corrosivity, " acid rain " can be produced into air simultaneously, can be not only detrimental to health, pollute environment, and meeting accelerated corrosion stove, cooker, water heater and household electrical appliance, shorten its service life.
In biogas, Jing often contains a certain amount of vapor, can block gas pipeline, when there is condensation water slug in appendix after these water vapor condensations, when marsh gas stove and biogas lamp burn, Jing often flashes, cause flame suddenly big or suddenly small, lights keep flickering affects the using effect of biogas.The area of very cold, every winter, the hydrops in appendix often make gas transmission blockage because of icing, and biogas can not be unimpeded.
To ensure health, marsh gas stove, biogas lamp normal work and environment protection, extend the service life of gas-fired equipment etc., improve the burning quality of gas utensil especially Marsh gas water heater, biogas has to carry out desulfurization dewatering dried.
The content of the invention
The purpose of the present invention is to overcome weak point in prior art, there is provided a kind of simple production process, the preparation method of the concave-convex bar methane desulfurizing dessicant of with low cost, desulfurizing and drying effect is significant.
The preparation method of concave-convex bar methane desulfurizing dessicant is：Oxidation processes, dispensing crushing, immersion extruding, dry in the sun pulverizing, pelletize dry in the sun, roasting are sieved, are packaged as finished product.The dispensing of concave-convex bar methane desulfurizing dessicant is made up of attapulgite clay, waste iron filing and dolomite.
Attapulgite clay is a kind of clay mineral of magnesium silicate containing Shuifu County of tool chain layer structure, and soil property is fine and smooth, and surface is smooth, and quality is lighter, and tacky when moist and plasticity, its viscosity can reach more than 3000mPas, is conducive to the bonding between raw material；Attapulgite clay after roasting has unique crystal structure, preferably larger specific surface area and absorption and water absorbing properties, water absorption rate more than own wt 85%, and immersion will not disintegrate for a long time in water.
Waste iron filing refer in metal cutting process produced by various iron filings, iron filings are commonly referred to as waste iron filing except reclaiming melting again, no great value, factory, and waste iron filing generates iron sulfide with the hydrogen sulfide reaction in biogas after oxidation processes.
Dolomite main component is CaMg (CO3)2, the specific surface area of natural dolomite is very little, and the specific surface area and pore volume of baked dolomite are then much greater than non-roasting dolomite, this be due to dolomite in roasting process MgCO3And CaCO3Decomposition discharges CO2So which has been internally formed uniform, sparse pore structure, and the dolomite chemism after roasting is higher, generates calcium sulfide with the hydrogen sulfide reaction in biogas.
The technical scheme is that：
1st, waste iron filing oxidation processes：Waste iron filing is placed into outdoor, is carried out after autoxidation with weather exposure through exposing to wind and rain, the surface of waste iron filing generates substantial amounts of rust.
2nd, dispensing is crushed：The dispensing of concave-convex bar methane desulfurizing dessicant, is made up of following component by weight percentage：Attapulgite clay 45～75%, waste iron filing 10～35% and dolomite 10～25%, the mixture after dispensing is crushed, and the grain graininess after crushing is controlled within 2 millimeters.
3rd, immersion extruding：Granule after crushing is added in cement fermentation vat, take out after carrying out immersion 1～3 day with clear water, continue to produce new rust in waste iron filing surface, attapulgite clay disintegrate after the immersion of water is tiny granule, it is bonded as one with waste iron filing and dolomite jointly, extrusion modification process is carried out in being transported to extruder, the thickness of flap for squeezing out is controlled within 3 millimeters.
4th, dry in the sun pulverizing：Tablet is transported to cement court carries out dry in the sun, water content≤13% in the tablet after dry in the sun, carries out pulverizing in the tablet input grinding machine after dry in the sun, and the pulverulent mixture grain graininess after pulverizing is controlled within 0.074 millimeter.
5th, pelletize dry in the sun：Pulverulent mixture is input in comminutor carries out pelletize, and the granule after pelletize is spherical in shape, and grain graininess is controlled at 1.0～6.0 millimeters, and the granule after pelletize is transported to cement court and carries out dry in the sun, water content≤13% in the granule after dry in the sun.
6th, roasting screening：Roasting will be carried out in granule input roaster after dry in the sun, at 600～700 DEG C, roasting time was controlled at 1.5～3 hours, was sieved after roasting for sintering temperature control, the crushed particles produced in roasting process and powder are screened out, the finished product of concave-convex bar methane desulfurizing dessicant is packaged as.
Concave-convex bar methane desulfurizing dessicant is a kind of peony spheroidal particle, its surface light and do not slide, have substantial amounts of micropore inside granule.Concave-convex bar methane desulfurizing dessicant is placed in methane-desulfurizing device, when the hydrogen sulfide in biogas and other harmful gass pass through from concave-convex bar methane desulfurizing dessicant, produce chemical reaction and physisorption, hydrogen sulfide in biogas generates iron sulfide and calcium sulfide, vapor is attracted to inside granule, reaches desulfurization and the purpose being dried.
When the concave-convex bar methane desulfurizing dessicant in concave-convex rod marsh gas desulfurization and drying apparatus is contacted for a long time with biogas, micropore major part inside its granule is blocked and lost activity by hydrogen sulfide and moisture content, concave-convex bar methane desulfurizing dessicant is in pitchy, Regeneration Treatment or the concave-convex bar methane desulfurizing dessicant for more renewing can be carried out, the method for Regeneration Treatment is：Concave-convex bar methane desulfurizing dessicant is taken out from desulfurizer, first place and aoxidized in an atmosphere, then concave-convex bar methane desulfurizing dessicant is rinsed and is dried using clear water, when concave-convex bar methane desulfurizing dessicant switchs to peony by pitchy, can be reapposed in desulfurizer and be continuing with, regeneration technology process is completed, the concave-convex bar methane desulfurizing dessicant after regeneration can be recycled for multiple times.
Concave-convex bar methane desulfurizing dessicant granule strength is high, the concave-convex bar methane desulfurizing dessicant of 30, and granule strength meansigma methodss reach more than 80 newton, and have water suction and water resistance well, will not disintegrate in being immersed in water for a long time.
The preparation method of concave-convex bar methane desulfurizing dessicant has simple production process, with low cost and the characteristics of do not pollute, concave-convex bar methane desulfurizing dessicant using method is easy, desulfurizing and drying effect is significant, can be recycled for multiple times after regeneration, be conducive to popularization and application.
The preparation method of concave-convex bar methane desulfurizing dessicant is applied to the desulfurizing dessicant of production biogas, natural gas and coal gas.
Specific embodiment
With reference to embodiment, the invention will be further described：
1st, waste iron filing oxidation processes：Waste iron filing is placed into outdoor, is carried out after autoxidation with weather exposure through exposing to wind and rain, the surface of waste iron filing generates substantial amounts of rust.
2nd, dispensing is crushed：The dispensing of concave-convex bar methane desulfurizing dessicant, is made up of following component by weight percentage：Attapulgite clay 55%, waste iron filing 25% and dolomite 20%, the mixture after dispensing is crushed, and the grain graininess after crushing is controlled within 2 millimeters.
3rd, immersion extruding：Granule after crushing is added in cement fermentation vat, take out after carrying out immersion 2 days with clear water, continue to produce new rust in waste iron filing surface, attapulgite clay disintegrate after the immersion of water is tiny granule, it is bonded as one with waste iron filing and dolomite jointly, extrusion modification process is carried out in being transported to extruder, the thickness of flap for squeezing out is controlled within 3 millimeters.
4th, dry in the sun pulverizing：Tablet is transported to cement court carries out dry in the sun, water content≤13% in the tablet after dry in the sun, carries out pulverizing in the tablet input grinding machine after dry in the sun, and the pulverulent mixture grain graininess after pulverizing is controlled within 0.074 millimeter.
5th, pelletize dry in the sun：Pulverulent mixture is input in comminutor carries out pelletize, and the granule after pelletize is spherical in shape, and grain graininess is controlled at 3.0～6.0 millimeters, and the granule after pelletize is transported to cement court and carries out dry in the sun, water content≤13% in the granule after dry in the sun.
6th, roasting screening：Roasting will be carried out in granule input roaster after dry in the sun, at 650～700 DEG C, roasting time was controlled at 2.5～3 hours, was sieved after roasting for sintering temperature control, the crushed particles produced in roasting process and powder are screened out, the finished product of concave-convex bar methane desulfurizing dessicant is packaged as.
Claims (1)
1. a kind of preparation method of concave-convex bar methane desulfurizing dessicant, it is characterised in that the preparation method of concave-convex bar methane desulfurizing dessicant is：1. waste iron filing is placed into outdoor, is carried out after autoxidation with weather exposure through exposing to wind and rain, the surface of waste iron filing generates substantial amounts of rust；2. the dispensing of concave-convex bar methane desulfurizing dessicant, is made up of following component by weight percentage：Attapulgite clay 45～75%, waste iron filing 10～35% and dolomite 10～25%, the mixture after dispensing is crushed, and the grain graininess after crushing is controlled within 2 millimeters；3. the granule after crushing being added in cement fermentation vat, taking out, carry out extrusion modification process in being transported to extruder after immersion being carried out 1～3 day with clear water, the thickness of flap for squeezing out is controlled within 3 millimeters；4. tablet is transported to cement court carries out dry in the sun, water content≤13% in the tablet after dry in the sun, carries out pulverizing in the tablet input grinding machine after dry in the sun, and the pulverulent mixture grain graininess after pulverizing is controlled within 0.074 millimeter；5. pulverulent mixture is input in comminutor carries out pelletize, and the granule after pelletize is spherical in shape, grain graininess
At 1.0～6.0 millimeters, the granule after pelletize is transported to cement court and carries out dry in the sun, water content≤13% in the granule after dry in the sun for control；6. roasting will be carried out in the granule input roaster after dry in the sun, at 600～700 DEG C, roasting time was controlled at 1.5～3 hours, was sieved after roasting for sintering temperature control, will be produced in roasting process
Raw crushed particles and powder are screened out, and are packaged as the finished product of concave-convex bar methane desulfurizing dessicant.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049111A (en) * | 1990-07-03 | 1991-02-13 | 四川建筑材料工业学院 | The acid soak acid heat activation of Concave-convex clay rod |
| US20050020446A1 (en) * | 2003-07-23 | 2005-01-27 | Choudhary Tushar V. | Desulfurization and novel process for same |
| CN1597088A (en) * | 2004-07-17 | 2005-03-23 | 兰州理工大学 | Preparation method of concave convex rod stone clay desulfur adsorption catalyst |
| CN101081347A (en) * | 2007-06-28 | 2007-12-05 | 袁长兵 | Method for preparation of concave-convex bar methane desulfurizing dessicant |
| CN101804289A (en) * | 2010-03-31 | 2010-08-18 | 淮阴工学院 | Preparation of flue gas desulfurizer and use and regeneration method thereof |
-
2015
- 2015-09-24 CN CN201510614378.5A patent/CN106554832A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049111A (en) * | 1990-07-03 | 1991-02-13 | 四川建筑材料工业学院 | The acid soak acid heat activation of Concave-convex clay rod |
| US20050020446A1 (en) * | 2003-07-23 | 2005-01-27 | Choudhary Tushar V. | Desulfurization and novel process for same |
| CN1597088A (en) * | 2004-07-17 | 2005-03-23 | 兰州理工大学 | Preparation method of concave convex rod stone clay desulfur adsorption catalyst |
| CN101081347A (en) * | 2007-06-28 | 2007-12-05 | 袁长兵 | Method for preparation of concave-convex bar methane desulfurizing dessicant |
| CN101804289A (en) * | 2010-03-31 | 2010-08-18 | 淮阴工学院 | Preparation of flue gas desulfurizer and use and regeneration method thereof |
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