Study On The Technique Of Safety Assessment Technology Of Biomass Liquefaction Resin Adhesive And The Curing Adhesive

Biomass adhesives are used more and more widely, so its safety and environmental protection are geting more attention. For the main ingredient in biomass liquefaction products and its resin adhesive, we need develop a rapid and simple analysis method and the experimental analysis method of stable and high recovery rate.At the same time,making the corresponding safety evaluation about biomass adhesive is the key of the biomass adhesive safety analysis and research.Biomass liquefaction products and its resin adhesive are research objects in this paper.we analysed the composition and main harmful ingredients, pre-treatment methods and detection methods and described its impact on the environment and human security.At the same time we analyzed the test method and security of the various main volatile component during biomass adhesive in the process of curing.It determines the key safety quality index and testing methods about the biomass liquefaction resin adhesive and liquefaction product.Paper main research contents are as follows:(1) Based on the research of solvent extraction, sample quantity, chromatographic conditions and the detection limit, standard curve, recovery rate and precision established a "solution extraction- GC method for determination of biomass liquefaction products and its resin adhesive of 1, 4- dioxane, benzene methyl ether, phenol, coumarone, dimethyl pyrazine compounds 5 methods". In the method,the five kinds of compounds in the minimum detection limit, the minimum quantitative limit is less than 0.5, 1.5 g/m L, respectively. recovery rate is 80.52 ~ 102.28%, the precision is 7.01% or less.(2) by the research of reaction temperature,the color dosage,color of time, wavelength absorption and the detection limits and other conditions,such as standard curve,recovery,precision,we establish a "4-amino-antipyrine spectrophotometric Determination of biomass liquefaction product and its method of phenol resin adhesive content. " Phenol method detection limit, minimum quantitation limits were less than 0.142,0.462ug/m L. The recovery rate of 92.27 ~ 109.18% and precision RSD≤6.19%.(3) By the research of typical parameters by volatile organic compounds released detection method involved, Air Toxic suction maximum amount of adsorption of the target monomer, reproduction stability, a standard control sample prepared by adsorption, thermal desorption and GC/MS parameters, the detection limit the main points of Standard curve, data stability, and establishing a "Air Toxic suction trap- secondary thermal desorption-GC/MS combined with technical testing biomass liquefaction resin adhesive in 1,4-dioxane, anisole, phenol, benzofuran, dimethyl pyrazine five kinds of volatile organic compounds method. " Five compounds method detection limit ≤5ng, recoveries of 84.06 ~ 103.59%, precision ≤3.59%.(4) Through the study Aldehyde and ketone compounds detection method involve derivatization sorbent tube sampling parameters, HPLC operating conditions, the standard curve, and the detection limit and other technical points, we established the "purge and trap- DNPH derivatized sample adsorption-HPLC Coupled with the simultaneous determination of biomass liquefaction resin adhesive 15 kinds of volatile aldehyde and ketone compounds way. " Methods 15 kinds of aldehyde and ketone compounds in the detection limit ≤ 0.25 ng / ml, recovery is 86.3% ~ 102.3% recovery, precision ≤4.99%.(5) Biomass liquefaction products and resin adhesive in raw material storage, production process have no adverse effects on the environment and the operator. Emissions of harmful substances of biomass liquefaction resin adhesive during heat curing process is in line with GB16276-1996 "air pollutant discharge standards". When ACH plywood plant is more than 12 times / h, the use of biomass liquefaction resin adhesive workshop environment is safe, the content of harmful substances in the air is below the occupational exposure limit values. Plywood biomass liquefaction resin adhesive produced no adverse effects on the home environment and have no harm to operator.