As part of us is the former No. 7 Design Institute under the former Ministry of Chemical Industry, we specialize in the engineering for the sulfuric acid, phosphate and catalyst sector. Enabled by dozens of patented and proprietary technologies, we offer integrated solutions for sulfuric acid (from various feeds, including elemental sulfur, pyrite, H2S through wet process or dry process, spent acid, sulfurous slurry, phosphogypsum, and sulfurous flue gas), wet-process phosphoric acid, phosphate fertilizer, yellow phosphorus, thermal-process phosphoric acid, fluorides, and phosphates. Historically, we designed over 40% of China's sulfur-burning sulfuric acid plants, the first 300 KTPA, 400 KTPA and 800 KTPA sulfur-burning sulfuric acid plants, the first 300 KTPA, 400 KTPA pyrite-based sulfuric acid plants, and the first 80 KTPA, 400 KPTA wet sulfuric acid plants. Globally, our sulfuric acid and phosphate footprint covers Vietnam, Malaysia, Bangladesh, Saudi Arabia and Uzbekistan.
Flagship Projects：
1.2 MMTPA slow- and controlled-release fertilizers project, Inner Mongolia Dati Yuntian Chemical Co., Ltd.
We delivered as EPC contractor the 300 KTPA phosphoric acid plant for Phase I of the project. The plant is located in an alpine cold region which comes with robust freezing protection design. The feed, which is iron ore tailing after floatation, contains residual phosphorous, and presents tremendous challenge for engineering and design.
800 KTPA sulfur-burning sulfuric acid plant, Yunnan Phosphate Chemical Group
The plant covers sulfur melting, sulfur burning, conversion, drying and absorption, product packaging, thermal system, start-up boiler, demineralized water station, power generation, and associated auxiliary systems. The 98% industrial grade sulfuric acid product satisfies the requirements for Grade I product according to GB/T534-2014 "Sulphuric acid for industrial use".
150 KTPA H2S-based sulfuric acid plant (dry process) for 200 KTPA alkylation plant, Sinopec Jingmen Company
This plant we designed satisfy all design specifications. The overall sulfur recovery rate is ~99%. The SO2 emission is less than 100mg/m3. Barring a small amount of weak acid generated in the purification system, no other pollutants are generated. Barring consumption of a small amount of electricity and cooling water, no other fuels or feeds are consumed.
Inorganic Chemical (Sulfuric Acid, Phosphate, Catalyst) | ||||
No. | Project | Scope | Year | Remark |
1 | Samarkand Fertilizer Complex, Uzbekistan | E | 2019 | Sulfuric acid, phosphoric acid, phosphate fertilizers |
2 | 800 KTPA sulfur-burning sulfuric acid, Fujian Eversun Technology Co., Ltd. | E | 2019 | Sulfur-burning sulfuric acid |
3 | 150 KTPA H2S-based sulfuric acid plant (dry process) for 200 KTPA alkylation plant, Sinopec Jingmen Company | E | 2017 | H2S-based sulfuric acid |
4 | Integrated Phosphates Complex, Malaysian Phosphate Additives (Sarawak) Sdn. Bhd. | E | 2016 | Phosphate |
5 | 3 KTPA SMTO catalyst plant, Sinopec Nanjing Catalyst Co., Ltd. | EPC | 2015 | Catalyst |
6 | 2x800 KTPA sulfuric acid plant, 2x300 KPTA phosphoric acid plant, Guizhou Kailin Group Co., Ltd. | E | 2015 | Sulfuric acid, phosphoric acid |
7 | 500 KTPA oleum plant for 400 KTPA polyamide complex, Fujian Shenyuan New Materials Co., Ltd. | EPC | 2014 | Oleum |
8 | 1.2 MMTPA slow- and controlled-release fertilizers project, Inner Mongolia Dati Yuntian Chemical Co., Ltd. | EPC | 2014 | Phosphoric acid |
9 | 2x100 KTPA spraying granulation S-based compound fertilizer plant, Standley Fertilizer (Pingyuan) Co., Ltd. | E | 2014 | Compound fertilizer |
10 | 2x100 KTPA spraying granulation S-based compound fertilizer plant and 100 KTPA ammonia-process compound fertilizer plant revamp project, Stanley Fertilizer (Fengcheng) Co., Ltd. | E | 2014 | Compound fertilizer |
11 | 500 KTPA oleum plant, Zhejiang Baling Hengyi Caprolactam Co., Ltd. | E | 2014 | Oleum |
12 | Sulfurous gas to sulfuric acid project, PetroChina Daqing Refining & Chemical Company | EP | 2014 | Sulfurous gas to sulfuric acid |
13 | 60 KTPA sulfurous gas to sulfuric acid project, Shandong Kenli Petrochemical Group Co., Ltd. | EPC | 2014 | Sulfurous gas to sulfuric acid |
14 | 120 KTPA H2S-based sulfuric acid plant, Renqiu Jiujiu Industry and Trade Co., Ltd. | E | 2014 | H2S-based sulfuric acid |
15 | 150 KTPA phosphoric acid, 300 KTPA DAP, 6 KTPA sodium fluorosilicate project, Xinjiang Fukang Xinlin Chemical Co., Ltd. | E | 2014 | Phosphoric acid, DAP, sodium fluorosilicate |
16 | 500 KTPA DCP project, Yunnan Phosphate Chemical Group | EP | 2013 | Dicalcium phosphate |
17 | 300 KTPA phosphoric acid project, Yunnan Yuntianhua International Sanhuan Branch | EPC | 2013 | Phosphate fertilizer |
18 | 800 KTPA sulfuric acid project, Yunnan Phosphate Chemical Group | EPC | 2013 | Sulfuric acid |
19 | 200 KTPA pyrite-based sulfuric acid project, Jinduicheng Molybdenum Industry Co., Ltd. | EPC | 2010 | Pyrite-based sulfuric acid |
20 | 250 KTPA sulfur-burning sulfuric acid plant with low-grade heat recovery unit, Shandong Bofeng Compound Fertilizer Co., Ltd | EPC | 2009 | Sulfur-burning sulfuric acid |
21 | 2x800 KTPA sulfur-burning sulfuric acid plant with power generation, Guizhou Kailin Group Co., Ltd. | E | 2009 | Sulfur-burning sulfuric acid |
22 | 2 x 1 MMTPA sulfur-burning sulfuric acid plant waste heat recovery system, Bateman Minerals & Metals Co., Ltd. | EPC | 2007 | Sulfur-burning sulfuric acid |
23 | 400 KTPA pyrite-based sulfuric acid project, Jiangxi Copper Industry Co., Ltd. | E | 2006 | Pyrite-based sulfuric acid |
24 | Jordan compound fertilizer project (15 KTPA nitric acid, 75 KTPA calcium phosphate) in Zhanjiang, Kemira Arab Potassium Carbonate Co., Ltd. | EPC | 2002 | Compound fertilizer |