Low-water-intensity biocarbon products, and processes for producing low-water-intensity biocarbon products

A low-water-intensity process for producing a biocarbon product, the process comprising:

• providing a feedstock, wherein the feedstock comprises biomass and from at least about 0 wt % to at most about 75 wt % water;
• optionally, drying the feedstock, thereby generating a dried feedstock and a first vapor, wherein the feedstock comprises from at least about 0 wt % to at most about 50 wt % water;
• pyrolyzing the dried feedstock or the feedstock, thereby generating hot solids and a second vapor;
• optionally, condensing at least a portion of the first vapor, thereby generating a first condensed liquid, wherein the first condensed liquid is characterized by a first pH of at least about 1 to at most about 7;
• condensing at least a portion of the second vapor, thereby generating a second condensed liquid, wherein the second condensed liquid is characterized by a second pH of at least about 1 to at most about 7;
• generating acid water, wherein the acid water comprises at least some of the second condensed liquid, at least some of the first condensed liquid, or a mixture comprising at least some of the first condensed liquid and at least some of the second condensed liquid;
• washing and cooling the hot solids, wherein the washing and cooling is achieved using the acid water, thereby generating washed and cooled solids;
• and
• recovering the washed and cooled solids as a biocarbon product, wherein the biocarbon product comprises at least about 50 wt % carbon,
• wherein the process has a water intensity defined as kilograms of net external water utilized divided by metric tons of the biocarbon product;
• and
• wherein the water intensity is at most about 1000 kg H2O per metric ton of the biocarbon product.