47. In March 1941, the soda ash production process developed by $\qquad$ was initially successful, and it was hailed as the "Hou's Soda Process".
A. Hou Debang
B. Hou Guangfan
C. Hou Xianglin
D. Hou Xueyu
【Answer】A
【Analysis】Hou Debang was a renowned chemical engineering expert, the founder of the "Hou's Alkali Process," and one of the pioneers of modern chemical industry in China. In 1955, he was appointed as a member (academician) of the Chinese Academy of Sciences, making outstanding contributions to the development, construction, and production of China's chemical industry. In the 1920s, under the technical blockade of the Solvay process by foreign countries, he led his staff through long-term arduous efforts, solving a series of technical problems, and produced high-quality "Red Triangle" brand soda ash in 1926. In August of the same year, at the World's Fair in Philadelphia, USA, it was awarded a gold medal. He also published the secrets of the "Solvay process" to the world, allowing people from all countries to share this scientific achievement, breaking the foreign technical monopoly. When the War of Resistance against Japan broke out, he came to Sichuan. When he encountered the situation where the "Solvay process" was not suitable for local conditions, he worked hard to research a new alkali production method, combining the Solvay process with the synthetic ammonia process. In 1941, he developed the integrated Cha'an method, which combined the alkali production process with the synthetic ammonia process, producing soda ash and ammonium chloride fertilizer simultaneously. This new method significantly increased the utilization rate of salt from 70% to 96%. At the same time, the by-product was no longer polluting the environment with tantalum chloride but could be used as fertilizer for soil. This opened a new era in the world's alkali industry. On March 15, 1941, Yongli Company held a factory meeting, and all colleagues unanimously agreed to name the new alkali process as the "Hou's Alkali Process." In 1953, the "Hou's Alkali Process" received the first invention certificate of the new China.