Clean burning bio-coal

Abstract

A clean burning bio-coal consists of 70˜90 wt % of bio-fiber material and 1˜20 wt % of coal material. With the above composition percentages for the bio-fiber material and the coal material, emission of greenhouse gases and pollution gases during burning of the bio-coal can be reduced, total heat energy producible from the bio-coal is high enough to satisfy requirements in industrial activities, and a high burn-out rate of the bio-coal can be advantageously achieved.

1 . A clean burning bio-coal, comprising bio-fiber material and coal material, wherein the bio-fiber material accounts for 70˜90 wt % of a total weight of the bio-coal, and the coal material accounts for 1˜20 wt % of the total weight of the bio-coal to enable production of total heat energy high enough to satisfy requirements in industrial activities. 
     
     
         2 . The bio-coal as claimed in  claim 1 , wherein the bio-fiber material is a carbon-containing botanical substance. 
     
     
         3 . The bio-coal as claimed in  claim 2 , wherein the carbon-containing botanical substance is selected from the group consisting of different agricultural wastes, including wood dust, corn stalks, rice straws, wheat straws, cotton stalks, peanut vines, sweet potato vines, bark, palms, bagasses, and any combination thereof. 
     
     
         4 . The bio-coal as claimed in  claim 1 , wherein the coal material is selected from the group consisting of peat, brown coal, soft coal, hard coal, and any combination thereof. 
     
     
         5 . The bio-coal as claimed in  claim 2 , wherein the coal material is selected from the group consisting of peat, brown coal, soft coal, hard coal, and any combination thereof. 
     
     
         6 . The bio-coal as claimed in  claim 4 , further comprising a botanical binder added to the bio-fiber material and the coal material, and the added botanical binder accounting for 15 wt % of the total weight of the bio-coal. 
     
     
         7 . The bio-coal as claimed in  claim 5 , further comprising a botanical binder added to the bio-fiber material and the coal material, and the added botanical binder accounting for 15 wt % of the total weight of the bio-coal. 
     
     
         8 . The bio-coal as claimed in  claim 6 , wherein the botanical binder is starch. 
     
     
         9 . The bio-coal as claimed in  claim 7 , wherein the botanical binder is starch. 
     
     
         10 . The bio-coal as claimed in  claim 4 , further comprising a burning resistant added to the bio-fiber material and the coal material, and the added burning resistant accounting for 1˜10 wt % of the total weight of the bio-coal. 
     
     
         11 . The bio-coal as claimed in  claim 5 , further comprising a burning resistant added to the bio-fiber material and the coal material, and the added burning resistant accounting for 1˜10 wt % of the total weight of the bio-coal. 
     
     
         12 . The bio-coal as claimed in  claim 10 , wherein the burning resistant is clay. 
     
     
         13 . The bio-coal as claimed in  claim 11 , wherein the burning resistant is clay. 
     
     
         14 . A clean burning bio-coal, comprising bio-fiber material and coal material, wherein alkaline calcium ions in the bio-fiber material fully react with acidic sulfur ions in the coal material to produce solid ashes, instead of reacting with oxygen atoms to produce sulfur dioxide, so that emission of greenhouse gases and pollution gases during burning of the bio-coal is reduced. 
     
     
         15 . The bio-coal as claimed in  claim 14 , wherein the bio-fiber material accounts for 70˜90 wt % of a total weight of the bio-coal, and the coal material accounts for 1˜20 wt % of the total weight of the bio-coal. 
     
     
         16 . The bio-coal as claimed in  claim 14 , wherein the bio-fiber material is a carbon-containing botanical substance. 
     
     
         17 . The bio-coal as claimed in  claim 15 , wherein the bio-fiber material is a carbon-containing botanical substance. 
     
     
         18 . The bio-coal as claimed in  claim 14 , further comprising a botanical binder added to the bio-fiber material and the coal material, and the added botanical binder accounting for 1˜5 wt % of the total weight of the bio-coal. 
     
     
         19 . The bio-coal as claimed in  claim 15 , further comprising a botanical binder added to the bio-fiber material and the coal material, and the added botanical binder accounting for 1˜5 wt % of the total weight of the bio-coal. 
     
     
         20 . The bio-coal as claimed in  claim 14 , further comprising a burning resistant added to the bio-fiber material and the coal material, and the added burning resistant accounting for 1˜10 wt % of the total weight of the bio-coal. 
     
     
         21 . The bio-coal as claimed in  claim 15 , further comprising a burning resistant added to the bio-fiber material and the coal material, and the added burning resistant accounting for 1˜10 wt % of the total weight of the bio-coal. 
     
     
         22 . A clean burning bio-coal, comprising bio-fiber material and coal material that are fully blended with each other, whereby when the bio-coal burns, it is the bio-fiber material that burns out first to produce a burning porous briquette, which enables an increased burn-out rate of the bio-coal. 
     
     
         23 . The bio-coal as claimed in  claim 22 , wherein the bio-fiber material accounts for 70˜90 wt % of a total weight of the bio-coal, and the coal material accounts for 1˜20 wt % of the total weight of the bio-coal. 
     
     
         24 . The bio-coal as claimed in  claim 22 , wherein the bio-fiber material is a carbon-containing botanical substance. 
     
     
         25 . The bio-coal as claimed in  claim 23 , wherein the bio-fiber material is a carbon-containing botanical substance. 
     
     
         26 . The bio-coal as claimed in  claim 22 , further comprising a botanical binder added to the bio-fiber material and the coal material, and the added botanical binder accounting for 1˜5 wt % of the total weight of the bio-coal. 
     
     
         27 . The bio-coal as claimed in  claim 23 , further comprising a botanical binder added to the bio-fiber material and the coal material, and the added botanical binder accounting for 15 wt % of the total weight of the bio-coal. 
     
     
         28 . The bio-coal as claimed in  claim 22 , further comprising a burning resistant added to the bio-fiber material and the coal material, and the added burning resistant accounting for 1˜10 wt % of the total weight of the bio-coal. 
     
     
         29 . The bio-coal as claimed in  claim 23 , further comprising a burning resistant added to the bio-fiber material and the coal material, and the added burning resistant accounting for 1˜10 wt % of the total weight of the bio-coal.