CN1896180A

CN1896180A - Production of high-strength and waterproofing postform biomass carbon

Info

Publication number: CN1896180A
Application number: CNA2006100814185A
Authority: CN
Inventors: 张宇振
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-19
Filing date: 2006-05-19
Publication date: 2007-01-17

Abstract

Production of high-strength and water-proofing post-formed biomass carbon is carried out by taking lignin or biomass material as raw materials, processing, taking lignin as binder, using biomass powder with fineness=40 mesh and high-quality wash refined coal powder with fineness >=60meshin proportion of biomass carbon: wash refined coal powder: binder=55-95:0-40:5-45, processing into post-formed biomass carbon half-finished product and heat carbonizing to obtain the final product.

Description

A kind of production method of high-strength and waterproofing postform biomass carbon

Technical field

The invention discloses a kind of be applicable to that the various biomass wastes that will be produced in process of production by industry, agricultural, forestry, livestock breeding industry and other industries are converted into powdered biomass after, how further to be processed into the production method of high-strength post-forming biomass charcoal, to belong to the technical field of resource and environment with excellent water resistance.

Background technology

To saw foam, Pericarppium arachidis hypogaeae, rice husk, corn stalk etc. after being dried to certain moisture, can create density by the screw extrusion rod-made machine under the condition of heating is bar-shaped fuel about in the of 1.2～1.4, pass through dry distillation charring then, can obtained performance good mechanism charcoal.Because its production process is earlier starting material compressed moulding and then charing to be become charcoal, therefore fly traditionally this charcoal to be called " first moulding charcoal ".

Become charcoal bit and pass through grinding and processing again and will saw first charings such as foam, Pericarppium arachidis hypogaeae, rice husk, corn stalk, add an amount of organic and/or inanimate matter material as tamanori, be called as " aftershaping charcoal " at the charcoal that has compressed moulding on the shaper of certain pressure and after super-dry, obtain.The problem that this " aftershaping charcoal " exists at present is: use organic material (as Mierocrystalline cellulose, starch, polyvinyl alcohol etc.), production cost is than higher, intensity difference, particularly waterproof ability is poorer: use inanimate matter material not only to increase the ash content of product, also may have influence on result of use simultaneously, waterproof ability is poor too.

Because lack the tamanori technology and the production technique of excellent property, therefore, " aftershaping charcoal " the technology development at home with good overall economic efficiency is slower, even some charcoal dealer refuses to accept " aftershaping charcoal ".And " aftershaping charcoal " employed starting material also are limited only within present the saw foam and by the softer charcoal aspect that the carbonization of wood produced.A large amount of exist by plant straw and mass-producing the formed biomass charcoal cellulosic material resource of the solid waste that large-scale livestock breeding industry produced (ight soil and the carcase that dies of illness); at present also because the tamanori problem; also do not possess the condition of developing the carbon material that becomes moulding in a large number, it is blank that this industry also belongs at home basically.

The content of invention

The present invention has proposed a kind of concrete production method for solving the problem that " aftershaping charcoal " exists in the background technology.Specifically, the present invention is with xylogen or is being that the material that includes a large amount of xylogen compositions that starting material carry out producing in the process of product processing is made tamanori with the biological material, using fineness is that 40 mesh sieve surpluses are not more than powder and the fineness that 20% biomass charcoal makes and are not less than 60 purpose high-quality clean fine coal coal dusts according to (biomass charcoal powder: clean fine coal powder: tamanori=55～95: 0～40: 5～45) (%, all be converted into dry product), under water ratio is suitable for condition that molding device become to do, be processed into aftershaping and give birth to the speciality carbon semiproduct, be treated as the post-forming biomass charcoal finished product through the heating charing that is not less than 350 ℃ more at last with definite shape and size.

Here, ' being fit at water ratio under the condition of molding device moulding ', what say was that the forming method that has added the biomass charcoal powder of tamanori has multiple, and various moulding processes require raw-material water ratio all not necessarily identical: such as, when adopting the roller press briquetting machine to make oblate spheroid shape charcoal, its pressure is generally all more than 25MPa even can reach 300MPa or higher, this moment, suitable water ratio was 5～13%, and when adopting comminution granulation to make the spheroidal charcoal, its pressure has only the deadweight of material, and this moment, suitable water ratio was approximately 18～25%.

And " be processed into have definite shape and the size moulding charcoal work in-process " what say is each moulding biomass charcoal work in-process of moulding, all have satisfactory shape and size: its shape can be square, rectangle, spheroid, pincushion, also can be spheroidal or other shape; Its size can be the small-particle that single volume has only diameter 8mm or 3mm, also can be that single volume is diameter 250mm or 40*40*40 (64000 cubic centimetres) even bigger bulk.

In addition, clean fine coal coal dust used in the present invention, refer to and to select hard coal clean fine coal coal dust or caking coal clean fine coal coal dust as required, to reach carbon content that improves product and/or the purpose that improves final cold strength, hot strength and the thermostability of product.

So, the present invention for solve a large amount of existence by plant straw and mass-producing the plain resource of the formed biomass charcoal of the solid waste that large-scale livestock breeding industry produced provide exploitation to become the necessary technical qualification of carbon material of moulding.Therefore, the starting material scope of " aftershaping charcoal " that the present invention produces has not been that father-in-law is limited in by the formed charcoal of wood materials, but expanded whole biomass categories to, so " the aftershaping charcoal " that exercise question of the present invention will be called traditionally changed over has implication " post-forming biomass charcoal " more widely.

Embodiment

Embodiment 1. wears into 40 purpose fine powders with 1000kg weedtree breeze with raymond grinding powder, the xylogen of adding 5%, add and use the screw extrusion rod-made machine that generally uses at present to create the bar-shaped fuel of hexagon of diameter 60mm after 90kg water stirs, and then, can either obtain the spherical charcoal that has enough cold strengths, hot strength and thermostability and have favorable waterproof property through 400 degrees centigrade heat treated.

This forming charcoal has the water logging bubble advantage that the time of length can be not defeated and dispersed yet arbitrarily.

It is that to add solid content wherein be 30% papermaking wastewater concentrated solution and 20% clean fine coal coal dust for the ratio of 20% (dry product) according to tamanori that the cow dung charing that embodiment 2. uses charring furnaces that the milk cattle cultivating field is produced becomes scorching biomass charcoal powder (perhaps other biomass charcoal powder), mix back mediation becoming walk, insert in the mould that is of a size of 400*400*400mm, after demoulding and the drying again the temperature through 350 degrees centigrade carry out heat treated, both become and had the very finished product of the post-forming biomass charcoal of favorable waterproof property.

This superhuge post-forming biomass charcoal can and have as the natural open-air transportation of charcoal can become the advantage that use suitable size back according to user's needs secondary breaking.And the powder that crushing process produces still can be used as biomass charcoal powder raw material and proceeds the reworking utilization.But when drying process was not thorough, product was easy to generate the crack.

Embodiment 3. biomass charcoal powder raw materials are with example 2.Mixing the back with 20% hard coal coal dust carries out temperature immediately with imines method papermaking wastewater stoste (solid content is 15%) and is not more than 180 degrees centigrade drying in the drum drying kiln after making the particulate state formed material of diameter 30-50mm on the pan-pelletizer, dried product through being not less than 400 degrees centigrade of heat treated, can either obtain the spherical charcoal that has enough cold strengths, hot strength and thermostability and have good water resistance again.

Because the half-finished intensity of globular can constantly strengthen and the crack of can preventing automatically when work in-process dried out in the drying process of drum drying kiln, therefore the product surface smoother is neat, intensity is higher, can satisfy the demand of multiple charcoal market to the charcoal product.

When the hard coal clean fine coal coal dust ratio of present embodiment is adjusted into 40%, particle diameter is adjusted into 15～30mm, just can create the very good furnace of calcium carbide carbon material of conductivity, can be after drying directly into stove, 400 degrees centigrade last heat treated program has been stayed in the furnace of calcium carbide and has been finished.

Therefore, optimum embodiment of the present invention is to use comminution granulation to carry out the suitability for industrialized production of continous way.The main points of its production process are to carry out drying and secondary charing processing immediately after finishing granulation.

Claims

1, a kind of production method of producing the high-strength waterproof post-forming biomass charcoal, it is characterized in that present method is with xylogen or be that the material that includes a large amount of xylogen compositions that starting material carry out producing in the process of product processing is made tamanori with the biological material, using fineness is that 40 mesh sieve surpluses are not more than powder and the fineness that 20% biomass charcoal makes and are not less than 60 purpose high-quality clean fine coal coal dusts according to (biomass charcoal powder: clean fine coal coal dust: tamanori=55～95: 0～40: 5～45) (%, all be converted into dry product), be suitable for being processed under the condition of molding device moulding post-forming biomass charcoal work in-process with definite shape and size at water ratio, last process again is not less than 350 degrees centigrade heating charing processing, has both become the post-forming biomass charcoal finished product.

2, according to claim 1 said " being suitable at water ratio under the condition of molding device moulding ", it is characterized in that the present invention can use multiple molding device and method to produce the work in-process of post-forming biomass charcoal: both can the very high high-tension apparatus of applying pressure produce post-forming biomass charcoal work in-process (such as the equipment forming pressure greater than 300MPa even higher), the suitable water ratio of this moment is 5～13%; Also can only produce the work in-process (such as using pan-pelletizer production with comminution granulation) of post-forming biomass charcoal under the pressure of deadweight, the suitable water ratio of this moment is 18～25%.

3, each the post-forming biomass charcoal work in-process that it is characterized in that moulding of the present invention according to claim 1 said " being processed into moulding charcoal work in-process " with definite shape and size, all have satisfactory shape and size: its shape can be square, rectangle, spheroid, pincushion, also can be spheroidal or other shape; Its size can be the small-particle that single volume has only diameter 8mm or 3mm, also can be that single volume is diameter 250mm or 40*40*40 (64000 cubic centimetres) even bigger bulk.

4, according to claim 1 said " clean fine coal coal dust ", it is characterized in that it can being fine hard coal coal dust, also can be fine caking coal clean fine coal coal dust.