CN101168677A

CN101168677A - Method for producing high-strength post-forming biomass charcoal

Info

Publication number: CN101168677A
Application number: CNA2006101500490A
Authority: CN
Inventors: 许绍良
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-25
Filing date: 2006-10-25
Publication date: 2008-04-30

Abstract

The invention discloses a production method for producing high intensity post forming biomass charcoal, and belongs to the resource and environment technical field. The invention adopts the material which takes lignin or biomass material as the raw material, the substance containing a great amount of lignin components produced during the product processing process acts as adhesive agent, the powder made by the biomass charcoal with fineness of 40 mesh and mesh residue no more than 20 percent, and the high quality refined coal powder with fineness no less than 60 mesh is used according to the proportion of biomass charcoal powder:refined coal powder:adhesive agent of 55 to 95:0 to 40:5 to 45 (percent, all are converted into dehydrated products), the adhesive agent, the biomass charcoal powder and the refined coal powder are processed to be the post forming biomass charcoal semi-finished products having certain shape and size under the condition that the moisture content percentage is suitable for the molding equipment to be molded, and finally are processed to be the post forming biomass charcoal finished products processed through the heating no less than 350 DEG C and the carbonizing treatment.

Description

A kind of production method of producing high-strength post-forming biomass charcoal

Technical field

The invention discloses that a kind of to 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 transform into biomass charcoal powder last, 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

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, passes through dry distillation charring then, can obtained performance good mechanism charcoal with sawdust, Pericarppium arachidis hypogaeae, rice husk.Because its production process is earlier starting material compressed moulding and then charing to be become charcoal, therefore traditionally this charcoal is called by " first moulding charcoal ".

And sawdust, Pericarppium arachidis hypogaeae, the charing of rice husk elder generation are become charcoal bit and pass through grinding and processing again, 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, obtained.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, and intensity difference, particularly waterproof ability are poorer; Use inanimate matter material not only to increase the ash content of product, also may have influence on result of use simultaneously, the ability of waterproof 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 at present also only still are limited in sawdust 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 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 at water ratio, 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 roller briquetting machine to make oblate spheroid shape charcoal, generally all more than 25MPa even can reach 300MPa or higher, this moment, suitable water ratio was 5～13% to its pressure; 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 about in the of 18～25%.

And ' being processed into the moulding biomass charcoal work in-process with definite shape and size ', 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 that single volume has only φ 8mm or 0.3cm ³Small-particle, also can be that single volume is φ 250mm or 400*400*400 (64000cm ³) 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 to be limited only within 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 1,1000kg weedtree breeze is become 40 purpose fine powders with the pulverizer grinding, the xylogen of adding 5%, add the 120kg water up and down back that stirs and use the screw extrusion rod-made machine that generally uses at present to create the bar-shaped fuel of hexagon of φ 60, and then carry out heat treated through 400 ℃ temperature and promptly become the post-forming biomass charcoal finished product.

This moulding charcoal has and the same combustionproperty of first moulding charcoal, has equally to soak the advantage that the time of length can be not defeated and dispersed yet arbitrarily in water.

Embodiment 2, use inventor herein's application patent of invention " that the organic solid waste waste is innoxious, resource utilization, the method that minimizing is administered " (application number: that 200510052337.8) makes has ' a continuous pyrolysis, charing, catalytic pyrolysis, reduction, the gasification and the equipment of security function initiatively ' (perhaps other can finish the equipment of carbonization process) become biomass charcoal powder (perhaps other other biomass charcoal powder) with the cow dung charing that the milk cattle cultivating field produces, the clean fine coal coal dust of adding 20% also mixes, be 30% papermaking wastewater concentrated solution modulation becoming walk with solid content then, insert and be of a size of in 400 * 400 * 400 the mould, carrying out heat treated through 350 ℃ temperature again after the demoulding and the drying promptly becomes and has the very post-forming biomass charcoal finished product of favorable waterproof property.

This superhuge post-forming biomass charcoal finished product 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 the biomass charcoal powder stock and proceeds the reworking utilization.But when drying process was not thorough, product was easy to generate the crack.

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

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 φ 15～φ 30, just can create the very good furnace of calcium carbide carbon material of conductivity, can be after drying directly into stove, 400 ℃ 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. production method of producing high-strength 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 more 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 at water ratio, 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.

2. according to claim one 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. according to claim one said ' being processed into post-forming biomass charcoal work in-process ' with definite shape and size, each the post-forming biomass charcoal work in-process that it is characterized in that moulding of the present invention, all have satisfactory shape and size: its shape can be square, rectangle, spheroid, cylindrical, pincushion, also can be spheroidal or other shape; Its size can be that single volume has only φ 8mm or 0.3cm ³Small-particle, also can be that single volume is φ 250mm or 40*40*40 (64000cm ³) even bigger bulk.

4. according to claim one said ' clean fine coal coal dust ', it is characterized in that it to be fine hard coal clean fine coal coal dust; It also can be fine caking coal clean fine coal coal dust.