湿热磷化工耦合绿色生产饲料磷酸盐技术

doi:10.11962/1006-4990.2020-0048

Abstract

Abstract:

The production green and sustainable method of coupling production of feed phosphate,such as feed-grade mono-calcium phosphate（MCP）,monodicalcium phosphate（MDCP）,dicalcium phosphate（DCP）,tricalcium phosphat（DFP） and special phosphoric acid-ditricalcium phosphate（MDTCP）,by using phosphate rock,wet phosphoric acid and yellow phosphorus tail gas was introduced.By the method,the calcium resource in the phosphate rock is economically utilized and the primary limestone resource for producing the feed phosphate is saved.Meanwhile,it not only explore an economical utilization route of yellow phosphorus tail gas,eliminate tail gas burning and save resource,but also fully recover the fluorine resources in the phosphate rock for producing the feed phosphate.The innovative coupling production brings the full resource utilization of phosphorus,calcium and fluorine in the phosphate rock.

Key words: wet coupling, green, phosphate, technology

CLC Number:

TQ126.35

Gong Jiazhu. Green production technology of feed phosphate of coupling by phosphate rock, wet process phosphoric acid and yellow phosphorus production tail qas[J]. Inorganic Chemicals Industry, 2020, 52(12): 50-54.

Figures/Tables 7

References 25

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项目	φ（CO）/ %	φ（CO₂）/ %	φ（O₂）/ %	φ（H₂）/ %	φ（CH₄）/ %	φ（N₂）/ %
指标	85~89	1~4	1	1~8	0.3	2~5
项目	ρ（H₂S）/ （mg·m^-3）	ρ（PH₃）/ （mg·m^-3）	ρ（HF）/ （mg·m^-3）	ρ（AsH₃）/ （mg·m^-3）	φ（H₂O）/ %	出口压力/kPa
指标	600~1 000	400~800	600~800	70~80	2~3	10~15

产品名称	磷矿（30.4%P₂O₅）/ （t·t^-1）	湿法磷酸（45.3%P₂O₅）/ （t·t^-1）	黄磷尾气（11 704 kJ/Nm³）/（m³·t^-1）
MCP	0.428	0.875	400
MDCP	0.494	0.726	460
DCP	0.658	0.468	620
MDTCP	0.724	0.373	680

产品名称	消耗钙/（t·t^-1）				消耗硫酸/（t·t^-1）			排放磷石膏/（t·t^-1）
产品名称	传统法	耦合法	节约钙	减排 CO₂	传统法	耦合法	节约硫酸	传统法（以磷酸计）	耦合法	减排磷石膏
MCP	1.30	0.50	0.80	0.22	1.68	1.14	0.54	3.94	2.70	1.24
MDCP	1.30	0.60	0.70	0.26	1.53	0.95	0.58	3.58	2.20	1.38
DCP	1.49	0.78	0.71	0.36	1.31	0.28	1.03	3.07	0.66	2.41
MDTCP	1.43	0.85	0.58	0.40	1.10	0.21	0.90	2.60	0.49	2.11

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Green production technology of feed phosphate of coupling by phosphate rock, wet process phosphoric acid and yellow phosphorus production tail qas

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