Method for preparing denitration material from coal gasification slag

• Main Authors: HAN XIAONING, CUI SUPING, WANG YALI, CHAO SICONG, LIU XIAOLOU, DENG HAORAN
• Format: Patent
• Language: Chinese; English
• Published: 29.04.2022
• Subjects: DISPOSAL OF SOLID WASTE; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; RECLAMATION OF CONTAMINED SOIL SOIL; SEPARATION; TRANSPORTING

The invention discloses a method for preparing a denitration material from coal gasification slag and belongs to the technical field of chemical waste treatment. Putting the coal gasification slag particles into a grinding device, and grinding until the coal gasification slag particles pass through a 200-mesh sieve to obtain coal gasification slag powder; and mixing the coal gasification slag powder with a potassium hydroxide solution with the concentration of 3-4 mol/L according to the mass ratio of 3: (5-6), standing and dipping for 3 hours after sufficient mixing, and drying the stirred mixed solution. When the oxygen content of the denitration material prepared from the coal gasification slag is 1%, the denitration rate of the denitration material prepared from the coal gasification slag in a high-temperature area can be maintained to be 75% or above, and the highest denitration rate can reach 90% or above. 一种利用煤气化渣制备脱硝材料的方法属于化工废弃物处理技术领域。煤气化渣颗粒置于研磨装置中，研磨至过200目筛的细度，获得煤气化渣粉末；煤气化渣粉末与浓度为3～4mol/L的氢氧化钾溶液以3：5～6的