## 4 Result: Emission List for the Whole Process of Refrigerant Production  
Based on a typical monthly material and energy input data in a R134a production workshop of a refrigerant manufacturer in a cooperative investigation in Section 3.1, this paper combines the energy consumption and material consumption of the intermediate product production process obtained by querying various documents in Section 3.2 and sorts out and calculates the whole process of refrigerant R134a production. Energy consumption and carbon emissions are shown in Table 3. Among them, different types of energy have different carbon emission factors R, and carbon emission factors are related to the quality, attributes and efficiency of energy fuels during combustion. Differences in the composition of energy fuels, energy utilization methods and energy utilization efficiency in different countries will lead to different countries. The difference in energy carbon emission factors between regions and regions. The emission factors used in this article refer to the data from the national greenhouse gas inventory report submitted by the Chinese government to the United Nations, which has a high degree of credibility. It should be noted that due to the limitation of the amount of data, the emission factors used in this article do not fully represent the types of energy consumed in the actual production process. For example, coal includes anthracite, bituminous coal, coking bituminous coal, lignite and other types. Only refer to the mean values of emission factors of various energy sources.  
Table 1 shows the energy consumption and material consumption in the direct production process of R134a per ton. Table 2 shows the material consumption and energy consumption in the production process of other intermediate materials. Table 3 shows the energy consumption and carbon emissions per ton of R134a production process. This article uses the energy emission factor method to evaluate and calculate CO\({}_{2}\). Table 3 uses the relevant energy consumption data of the substances in Tables 1 and 2 are used for calculation. The data in Table 3 uses the calculation methods in Formulas (1)-(3).  
\begin{table}
\begin{tabular}{c c c} \hline \hline
**Type** & **Ways to Produce** & **Energy Consumption and Material Consumption** \\ \hline \multirow{4}{*}{Electrolysis of chlorine, alkali and hydrogen} & The electrolysis of sodium chloride or potassium chloride brine is usually done in mercury batteries, and the hydrogen produced by electrolysis is used as an energy input in other reactions. & Each ton of chlorine requires 3.53 tons of water, 1.27 tons of sodium chloride, 2.06 MWh of electricity, and 1.97 GJ of hydrogen production. \\  & Pyrolysis of mixed hydrocarbon raw materials (from natural gas to heavy oil). & Each ton of ethylene requires 25.9 GJ of natural gas and 1.6 tons of water. \\ \hline \hline \end{tabular}
\end{table}
Table 2: Cont.  
It can be seen from the data in the table that for every ton of R134a refrigerant produced, the direct and indirect energy consumption of the production process will cause 15.9 tons of CO\({}_{2}\) emissions, and the multi-stage composite carbon emission factor of the R134a production process is 15.9 kg CO\({}_{2}\) eq/kg. As shown in Figure 5, the carbon emissions of various types of energy, in the production process of refrigerant R134a, the carbon emissions caused by the input of electrical energy accounted for the highest proportion, reaching 58.4%, and electrical energy is also one of the most widely used secondary energy sources.