The granular activated carbon with high strength was prepared by heating wood phosphate mixture at low temperature and using tar generated during its pyrolysis as binder.
In this paper, the process conditions and plasticizing mechanism of granular activated carbon prepared by phosphoric acid were studied, which provided scientific data and theoretical basis for the preparation of high strength granular activated carbon.
Fir chip as the raw materials, H - POs as activator, using single factor analysis and orthogonal experimental design method, this paper discusses the influence granular activated carbon pore structure and the iodine adsorption value, methylene blue and strength of various preparation factors, determine the optimum process conditions of preparation of granular activated carbon phosphoric acid, phosphoric acid concentration is 70%, dipping 180%, kneading temperature is 170 ℃, for 60 min kneading time, activation temperature is 350 ℃, the activation time of 210 min.
The kinetic data are consistent with the quasi-second-order kinetic model, which can more accurately describe the adsorption process of methylene blue on activated carbon.
The prepared activated carbon can effectively adsorb and remove methylene blue solution in different concentration range in aqueous solution, and the removal effect is better, which is a kind of adsorbent with development potential.coconut shell activated carbon manufacturers
In activated carbon adsorption characteristics of mercury in flue gas of experiments, the experimental results show that: the preparation of activated carbon and commercial activated carbon has the same ability to mercury, commercial activated carbon on mercury adsorption efficiency was 53.5%, the biggest physical activation, the preparation of activated carbon on mercury adsorption efficiency was 47.5%, the largest chemical activation of the activated carbon prepared by the biggest adsorption efficiency for the mercury is 57.64%.www.chinactivecarbon.com
According to the above experimental results, biomass is an ideal raw material for the preparation of activated carbon, and the prepared activated carbon is an adsorbent with development potential.
By comprehensive comparison between physical activation method and chemical activation method, the activated carbon prepared by physical activation method has better economic benefit and environmental protection value.
Activated carbon is a kind of carbon adsorption material with rich pore structure and high specific surface area, which is widely used in various fields, and its demand is increasing year by year.
At present, domestic activated carbon preparation technology is relatively backward, equipment automation degree is low, resulting in waste of resources, environmental pollution and other phenomena.
In view of the above problems, through in-depth analysis of the carbonization process of activated carbon, the design of FX2N PLC as the core controller, Mitsubishi touch screen as the man-machine interface automatic control system, to achieve the automatic control of the carbonization section, improve the degree of automation of equipment.
The quality of activated carbon is directly affected by the control performance of furnace temperature and pressure of carbonization furnace.