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The kraft process (also known as kraft pulping or sulfate process) is a process for conversion of wood into wood pulp, which consists of almost pure cellulose fibres, the main component of paper. The kraft process involves treatment of wood chips with a hot mixture of water, sodium hydroxide (NaOH), and sodium sulfide (Na 2 S), known ...
The kraft process, sometimes called “Kraft Pulping” or the “Sulfate Process,” is the process by which wood is turned into wood pulp, the main component of the paper. Wood chips are treated with a hot mixture of water, sodium hydroxide (NaOH), and sodium sulfide (Na2S) in large pressure vessels called digesters.
kraft process. tall oil, dark, odorous liquid by-product of the sulfate (kraft) process of paper manufacture, used after refining to make coatings, sizing for paper, paint, varnish, linoleum, drying oils, emulsions, lubricants, and soaps.
Proceso industrial. Materiales 09 marzo, 2023. El papel kraft es uno de los materiales más versátiles y populares en el mundo de la industria. Esta sustancia se utiliza principalmente para envases, embalajes, entre muchas otras cosas.
Globally, kraft process is the dominant technology of paper and pulp industry. Approximately 130 million t of kraft pulp is generated annually. In kraft process, the wood chips are pretreated at 170°C for about 2 h in an aqueous solution of sodium hydroxide and sodium sulfide.
Kraft paper is produced on paper machines with moderate machine speeds. The raw material is normally softwood pulp from the kraft process. Maintaining a high effective sulfur ratio or sulfidity is important for the highest possible strength using the kraft process.
The Kraft process, also referred to as the sulfate process or as Kraft pulping, is a process used to produce paper pulp. The purpose of the process is to remove the lignin from the cellulose in the wood fibers that are placed in side larger pressure vessels that are called digesters.
