Gas desulfurization adsorbent, preparation method thereof and desulfurization method for sulfur-containing gas
An adsorbent and gas technology, applied in the field of desulfurization of sulfur-containing gas, can solve the problems of insufficient sulfur adaptability and low removal activity of sulfur-containing organic matter, and achieve the effect of convenient industrial application, good practical industrial application value, and improved physical and chemical properties.
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[0030] The present invention also provides a method for preparing a gas desulfurization adsorbent, the method comprising:
[0031] (1) Mix and contact silicon oxide source, aluminum oxide source, zinc oxide source, M41S family mesoporous molecular sieve, second metal promoter and acidic liquid, and shape, dry and roast the obtained mixture;
[0032] Wherein, the method also includes at least one of the following steps:
[0033] (2a) Before said mixing and contacting, said M41S family mesoporous molecular sieve is mixed and contacted with the first metal promoter precursor;
[0034] (2b) mixing and contacting the roasted product obtained in step (1) with the first metal promoter precursor to obtain an adsorbent precursor, and then roasting the adsorbent precursor;
[0035] Wherein, the precursor of the first metal accelerator is selected from acetates, carbonates, nitrates, sulfates, thiocyanates and oxides of metals in the group consisting of VIIB group metals and VIII group ...
Embodiment 1
[0059] This example is used to illustrate the gas desulfurization adsorbent of the present invention and its preparation method.
[0060] 4.21 kilograms of zinc oxide powder (purchased from Headhorse company, purity is about 99.7% by weight), 2.23 kilograms of MCM-41 (purchased from Nanjing Catalyst Branch, containing 2.00 kilograms on a dry basis) and 6.30 kilograms of deionized water were mixed, stirred for 30 Minutes later, a mixed slurry of zinc oxide and MCM-41 was obtained.
[0061] Get 1.37 kilograms of alumina (purchased from Shandong Aluminum Works, containing 1.00 kilograms on a dry basis), 0.83 kilograms of diatomite (purchased from Nanjing Catalyst Branch, containing 0.8 kilograms on a dry basis) and 4.1 kilograms of deionized water are mixed under stirring, Then, 280 ml of 30% by weight hydrochloric acid (chemically pure, purchased from Beijing Chemical Plant) was added to acidify for 1 hour with stirring. Then, a mixed slurry of zinc oxide and MCM-41 and 0.81 kg...
Embodiment 2
[0077] This example is used to illustrate the gas desulfurization adsorbent of the present invention and its preparation method.
[0078] 5.01 kilograms of zinc oxide powder (purchased from Headhorse Company, with a purity of about 99.7% by weight), 1.88 kilograms of MCM-48 (purchased from Nanjing Catalyst Branch, containing 2.00 kilograms on a dry basis) and 6.60 kilograms of deionized water were mixed and stirred for 30 Minutes later, a mixed slurry of zinc oxide and MCM-48 was obtained.
[0079] Get 1.64 kg of alumina (purchased from Shandong Aluminum Works, containing 1.20 kg on a dry basis), 1.0 kg of kaolin (purchased from Nanjing Catalyst Branch, containing 0.8 kg on a dry basis) and 4.1 kg of deionized water and mix them under stirring, then add 300 ml of 30% by weight hydrochloric acid (chemically pure, purchased from Beijing Chemical Plant) was stirred and acidified for 1 hour. Then a mixed slurry of zinc oxide and MCM-48 and 0.61 kg of vanadium pentoxide (purchased...
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