| abstract |
The invention discloses an acid making process which is characterized by comprising the following steps: step S1, waste acid treatment, step S2, sulfur-containing mineral treatment, step S3, preparation of mixed furnace gas, step S4, incineration, step S5, SO 3 Preparing furnace gas, and S6, preparing finished acid. The acid making process disclosed by the invention is simple, short in flow, convenient to operate, low in power consumption in the production process, capable of efficiently and quickly realizing comprehensive recycling of sulfur-containing flue gas of a multi-source acid making raw material, free of toxic and harmful substances in the process, high in production efficiency and finished product qualification rate, and suitable for large-scale continuous production; moreover, the device investment and the operation cost can be greatly reduced in the preparation process, and the economic value, the social value and the ecological value are higher. |