我国的二氧化碳排放量约占总排放量的10％，为二氧化碳大排放大国，如何回收利用好二氧化碳显得意义尤为重大，也是我国实施科学发展观、能源再生利用、保护环境、构 筑和谐社会的一项重要工作。就对国内不同的二氧化碳原料气的二氧化碳生产技术作简单介绍，供二氧化碳生产企业选择参考。

吸附精馏法制备食品级CO2技术,从工业废气及其它富含CO2的气源中提纯得到符合的食品级CO2,该技术具有能耗低、投资少、运行费用低的优点,是目前国内外的方法之一.PTSA吸附精馏法是利用变温变压吸附法脱除CO2中水、硫、C2和C3以上烃类、苯、醛、醇、其它含氧有机物、氯乙烯、氨、磷化氢、氰化氢等高沸点杂质，利用精馏法脱除CO2中H2,O2,N2,CO,CH4低沸点杂质，使CO2纯度达到99.95%以上，工艺及装置的"净化"工艺均使用的PTSA工艺，一般情况下不使用催化氧化法脱烃，而要实现这一工艺的前提是所使用的吸附剂必须具有适应该工艺需要的吸附选择性和足够大的吸附容量。

浩瀚色谱（山东）应用技术开发有限公司主要论述了利用气相色谱法测定高纯二氧化碳中含氧有机物及苯,氯乙烯时色谱柱的选择和方法线性,重现性.

名称：填充柱
固定液：聚乙二醇20M
载体：101白色担体0.17mm-0.25mm
规格：3m*3mm（内径）
型号：10%PEG-20M/101
应用：食品添加剂二氧化碳中有机物测定

my country&＃39;s carbon dioxide emissions account for about 10% of the world&＃39;s total emissions. It is the second largest emitter of carbon dioxide in the world. How to recycle and utilize carbon dioxide is of great significance. An important task for a harmonious society. The carbon dioxide production technology of different domestic carbon dioxide feed gas is briefly introduced, for the reference of carbon dioxide production enterprises.

The technology of preparing food-grade CO2 by adsorption and rectification is to purify food-grade CO2 that meets national standards from industrial waste gas and other gas sources rich in CO2. This technology has the advantages of low energy consumption, low investment and low operating costs. One of the best methods at home and abroad. PTSA adsorption distillation method is to use temperature swing pressure swing adsorption method to remove water, sulfur, hydrocarbons above C2 and C3, benzene, aldehydes, alcohols, other oxygen-containing organics, vinyl chloride, Ammonia, phosphine, hydrogen cyanide and other high-boiling impurities, use rectification to remove H2, O2, N2, CO, CH4 low-boiling impurities in CO2, so that the purity of CO2 reaches more than 99.95%, and the "purification" of the process and equipment The processes all use a unique PTSA process. Generally, catalytic oxidation is not used for dehydrocarbon. The premise of realizing this advanced process is that the adsorbent used must have the adsorption selectivity and sufficient adsorption capacity to meet the needs of the process. .

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. mainly discusses the choice of chromatographic column and the linearity and reproducibility of the method for the determination of oxygen-containing organic compounds, benzene and vinyl chloride in high-purity carbon dioxide by gas chromatography.

Name: Packed Column

Fixative: polyethylene glycol 20M

Carrier: 101 white carrier 0.17mm-0.25mm

Specifications: 3m*3mm (inner diameter)

Model: 10%PEG-20M/101

Application: Determination of organic matter in food additive carbon dioxid