多孔材料对柴油脱色及脱碱性氮性能的对比研究

doi:10.19964/j.issn.1006-4990.2021-0146

Abstract

Abstract:

The mixed hydrogenation of coking diesel and catalytic diesel was used as raw material.Under certain conditions,the effect of different types of adsorbents on decolorization and debasing nitrogen of diesel oil was investigated.The results of static test showed that the decolorization effect of activated carbon adsorbent was best,ASTM D1500 chroma reached 0.2. Aluminum silicate adsorbent had the best effect of removing basic nitrogen and the removal rate reached 90%.Dynamic test results showed that the adsorption capacity of the activated carbon adsorbent was the highest,which reached 5.58%,but the saturated adsorption capacity of basic nitrogen was only 0.45%.The aluminum silicate adsorbent had the best effect of remov-ing basic nitrogen,the adsorption capacity of basic nitrogen was 0.91%,and the adsorption capacity of saturated nitrogen was 1.24%.Comparing to the fresh agent,using high temperature roasting and regeneration,activated carbon adsorbent could completely restore decolorization and gelatinization ability.Using polar solvent regeneration,aluminum silicate adsorbents could fully restore the ability to debase nitrogen.

Key words: diesel, solid adsorbent, decolorization, debasing nitrogen, regeneration

CLC Number:

TQ127.1

ZHAO Chuang,GUO Chunlei,LI Ben,LI Bin. Comparative study on decolorization and nitrogen removal of diesel oil by porous materials[J]. Inorganic Chemicals Industry, 2021, 53(11): 129-132.

Figures/Tables 9

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References 15

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吸附剂	w（Al₂O₃）/%	w（SiO₂）/%	备注
氧化铝	98.900	0.657	活性γ-Al₂O₃
硅胶	0.325	98.950	C型
硅酸铝	65.770	33.940	无定型
大孔树脂	0.150	0.032	极性离子交换性树脂
X分子筛	31.700	48.100	Na型13X分子筛
活性炭	0.286	0.313	柱状炭

项目	ASTM	D1500色度ρ（胶质）/（10^-2 mg·mL^-1）	w（碱性氮）/ （mg·kg^-1）
氧化铝	2.3	45.9	7.9
大孔硅胶	2.3	46.1	7.7
硅酸铝	1.5	12.9	1.6
大孔树脂	2.4	47.5	7.6
Na-13X分子筛	2.4	48.2	18.5
大孔活性炭	0.2	4.3	16.1
原料	2.5	48.3	18.9

穿透时间/ d	w（碱性氮）/ （mg·kg^-1）	ASTMD1500 色度号	ρ（胶质）/ （10^-2 mg·mL^-1）
0.5	<1.0	0.1	0.0
1.5	<1.0	0.2	0.0
2.5	<1.0	0.2	0.0
3.0	<1.0	0.9	12.5
3.5	<1.0	1.5	35.2
4.0	3.55	1.9	48.3
5.0	5.80	2.5	48.5
7.0	11.52	2.5	48.3
9.0	15.29	2.5	48.3
10	18.92	2.5	48.3
11	18.90	2.5	48.3
12	18.92	2.5	48.3

穿透时间/ d	w（碱性氮）/ （mg·kg^-1）	ASTMD1500 色度号	ρ（胶质）/ （10^-2 mg·mL^-1）
1	<1.0	0.9	17.65
2	<1.0	2.0	32.50
4	<1.0	2.5	44.38
8	<1.0	2.5	48.31
12	<1.0	2.5	48.4
16	<1.0	2.5	48.32
18	<1.0	2.5	48.31
19	<1.0	2.5	48.3
20	1.37	2.5	48.3
22	5.34	2.5	48.3
26	16.51	2.5	48.3
27	18.90	2.5	48.3
28	18.91	2.5	48.3
29	18.90	2.5	48.3

吸附剂	比表面积/ （m²·g^-1）	孔容/ （cm³·g^-1）	平均孔径/ nm
氧化铝	263.7	0.38	5.54
大孔硅胶	449.3	0.68	4.75
硅酸铝	366.2	0.65	8.02
大孔树脂	679.6	0.42	7.15
X分子筛	515.6	0.33	2.83
大孔活性炭	850.6	1.01	8.45

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Comparative study on decolorization and nitrogen removal of diesel oil by porous materials

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Figures/Tables 9

References 15

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吸附剂	脱附温度/℃	酸量/（mmol·g^-1）
大孔氧化铝	197.2	0.342
大孔硅胶	118.5,315.9	0.298,0.024
硅酸铝	227.7	0.395
大孔树脂	109.4,205.5	0.103,0.009
X分子筛	178.3	0.393
大孔活性炭	122.5	0.094

再生温度/ ℃	胶质吸附容量/%	胶质饱和吸附量/%	碱性氮饱和吸附量/%
500	1.65	2.20	0.44
700	2.01	2.49	0.41
800	3.19	4.63	0.46
900	3.65	5.62	0.46
1 000	2.98	4.99	0.42

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溶剂类型	碱性氮吸附容量/%	碱性氮饱和吸附量/%
甲苯	0.49	0.75
乙醇	0.91	1.25
混合溶剂	0.71	1.01