PRODUCT
PRODUCT
SAQ™
What is SAQTM?
- A delignification agent used in the chemical pulp manufacturing process of kraft pulp.
- A reddish brown alkaline liquid.
- The active ingredient is anthraquinone, an aromatic compound which occurs naturally in aloe and other plants, as well as in fungi and insects.
- Anthraquinone is a yellow, water-insoluble solid, but SAQTM offers an anthraquinone-derived substance as an aqueous solution.
SAQTM (left) Anthraquinone (right)
Characteristics
- To be effective as a delignification agent, it must be able to penetrate to the interior of the wood chip through the micron-sized pores on the surface.
- Anthraquinone is a water-insoluble particle, so only a few, very small particles can reach the inside of the chips.
- Because SAQTM is a water-soluble liquid, it can quickly penetrate into chips and manifest its effects.
Penetration of SAQTM and anthraquinone (slurry AQ) into wood chips
Action and Effects
- The quinone structure of SAQTM is characterized by the forming of a catalytic cycle mechanism that repeats oxidation and reduction reactions.
- SAQTM takes advantage of its quinone structure to facilitate two digesting reactions: the oxidative stabilization of cellulose necessary for pulping concurrently with reductive degradation of lignin in the wood.
- Various derivative effects are evident in the pulp manufacturing process from these functions of SAQTM.
- SAQTM reduces the amount of carbon dioxide generated by pulp mills and thereby contributes to conservation of our global environment.
Production of chemical pulp from wood chips
Action and Derived Effects of SAQTM in the Digesting Process