High-temperature gas composite oxide desulfurizer and production thereof
A technology of composite oxides and desulfurizers, applied in the catalytic conversion of impurities, gas purification, etc., can solve the problems of desulfurization performance and mechanical strength attenuation, affecting the service life of desulfurizers, etc., and achieve the effect of high wear resistance
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Embodiment 1
[0018] No. 1 desulfurizer is composed of the following components: 35% of zinc oxide, 51% of titanium dioxide, 4.0% of nickel oxide, 2.5% of aluminum oxide, 5.5% of inorganic binder (bentonite, kaolin, clay, etc.), organic binder Binder (cellulose, polyvinyl alcohol and starch, etc.) 2.0%, etc.;
[0019]The components of No. 2 desulfurizer are: zinc oxide 37%, titanium dioxide 36%, copper oxide 10%, manganese dioxide 6.5%, aluminum oxide 1.5%, chromium oxide 2.0%, inorganic binder (including phosphoric acid) 6.0 %, organic binder 1.0%, etc.;
[0020] The components of No. 3 desulfurizer are: 50% zinc oxide, 33% titanium dioxide, 4.5% nickel oxide, 4.0% aluminum oxide, 2.5% chromium oxide, 4.5% inorganic binder, 1.5% organic binder, etc.;
[0021] The components of No. 4 desulfurizer are: 44% zinc oxide, 42% titanium dioxide, 4.0% nickel oxide, 1.5% aluminum oxide, 1.5% chromium oxide, 3.5% inorganic binder, 3.5% organic binder, etc.;
[0022] The composition of No. 5 desulfu...
Embodiment 2
[0025] According to the ratio of No. 1 and No. 2 desulfurizers, 10 kg of desulfurizers for entrained bed desulfurization were prepared according to the aforementioned preparation method. First, mix and grind the prepared materials to disperse the components evenly, then add water for kneading, and use an extruder to make a cylindrical shape with a diameter of φ2~5mm. Drying at high temperature for 8 hours, the molded product is made into 200-500 μm particles, and No. 1 desulfurizer is roasted at 1000 ° C for 6 hours. No. 2 desulfurizer was roasted at 960°C for 8 hours.
[0026] Element
H 2
CO
CO 2
CH 4
C 2 h 4
C 2 h 6
N 2
O 2
%
40.9
24.8
30.4
2.6
0.02
0.03
0.9
0.09
[0027] H into the reactor gas 2 The S content is 14~21g / m3, the reactor outlet H 2 The S content is 0-10 mg / m3. The results of 17 times of desulfurization are shown in Table 1.
[0028...
example 3
[0032] According to the ratio of No. 3 and No. 4 desulfurizing agents, the roasting temperature of No. 3 desulfurizing agents during preparation is 940° C., and the roasting time is 6 hours. The roasting temperature of No. 4 desulfurizer is 1020°C for 8 hours, and the particle size of the finished product is φ4.5mm×5~10mm. The rest of the process is the same as the preparation of desulfurizer in Example 2.
[0033] The prepared desulfurizer was tested with real gas in a miniature high temperature and normal pressure packed bed reactor. The composition of the gas: H 2 32.45~44.3%, CO 25.88~36.06%, CO 2 22.8~41.2%, O 2 0.29~1.30%, CH 4 1.23~3.01%, N 2 0.462~5.41%, H in gas 2 S content up to 10g / m 3 , and regenerated with a mixed gas containing 50% steam, nitrogen and 3-6% oxygen. Four desulfurization / regeneration tests were carried out for the above two desulfurizers at a space velocity of 3000 / h and a temperature of 500°C, 550°C, 600°C and 650°C. The results show tha...
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