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Acid Plant Database December 9, 2023
| Owner | Awash Melkasa Aluminum Sulfate and Sulfuric Acid |
|
| Location |
Awash Melkasa Ethiopia |
|
| Background | - | |
| Website | - | |
| Plant | - | |
| Coordinates* | 8° 25' 23.5" N, 39° 19' 44" E | |
| Type of Plant | Sulphur Burning | |
| Gas Source | Elemental Sulphur | |
| Plant Capacity | 50 MTPD | |
| SA/DA | - | |
| Status | - | |
| Year Built | 1995 | |
| Technology |
Nuberg EPC
 |
|
| Contractor | - | |
| Remarks | 40 MTPD Aluminum Sulphate Plant | |
| Pictures |
 |
|
| General | - | |
| References |
Lemessa, A., Birlie, M., Kassahun, M., Mengistu,
Y. (2022). Process Revamping of H2SO4 Plant to Double Contact Double
Absorption (DCDA) Using ASPEN HYSYS to Reduce SO2 Emission: Case of Awash
Melkassa Sulfuric Acid Factory. In: Berihun, M.L. (eds) Advances of Science
and Technology. ICAST 2021. Lecture Notes of the Institute for Computer
Sciences, Social Informatics and Telecommunications Engineering, vol 411.
Springer, Cham. Abstract - Sulfur dioxide (SO2) is identified as among one of the major air pollutant gases in the globe. SO2 cause severe adverse effects on the respiratory system of all living things and causes several difficulties in the environment such as acid rain and plant growth retardation. This work presents a virtual experimental investigation of the simulation of H2SO4 using Double contact double absorption (DCDA) to reduce the SO2 emission. Awash Melkassa Aluminum Sulfate and Sulfuric Acid Share Company (AMASSASC) produce Sulfuric acid by using single contact single absorption (SCSA) which releases up to 3% SO2 to the atmosphere. In this work, the simulation uses ASPEN HYSYS with Antoine based fluid package to predict several values. The major unit operation involved in the design includes four consecutive converters and absorption columns including the proposed intermediate absorber and secondary absorber. Different recycle setup configuration was considered to achieve the best possible SO2 reduction. The effect of inlet temperature, split ratio of mass to the modeled absorber in response to the final SO2 amount was studied. From the optimal design it was able to reduce SO2 to 0.12 mol%. The trade-off between utility power consumption and SO2 emission for different design options was also studied to obtain optimal design setup. |
|
| News |
July 21, 2000 - The Awash
Melkasa Aluminum Sulphate and Sulphuric Acid Factory has announced that it
will be exporting its products to Sudan, Kenya, Djibouti, Tanzania, Zambia,
Israel and Yemen. According to the general manager of the factory, the
factory's annual production capacity is 1,700 tonnes of chemicals but the
country's demand for the chemicals is only 700 tonnes. Over 11.3
million birr worth of the chemicals was sold during the just concluded
Ethiopian budget year, it was leant. February 24, 2018 - The Awash Melkassa Aluminum Sulphate and Sulfuric Acid SC suspended production following a mine closure that supplies raw materials to the factory.Located 107km east of Addis Ababa, the Awash Melkassa Factory mainly produces Aluminum Sulphate and Sulfuric acid chemicals. The factory supplies its products to the cities’ water and sewerage authorities which uses it to treat drinking water.The factory mainly uses kaolin mineral as a raw material to produce Aluminium sulphate. Kaolin is mined in Bambo Wuha locality, near Kibre Mengist town in the Oromia Regional State. The mine is operated by the state owned Ethiopian Minerals, Petroleum and Bio Fuel Development Corporation.The mine was closed last month due to a dispute with the local community and administration in connection with youth benefit demands in the Oromia Regional State. Following the closure of the mine, the Corporation has been unable to supply kaolin mineral to the Awash Melkassa Aluminum Sulphate and Sulfuric Acid Factory.Teshome Tessema, deputy general manager of Awash Melkassa Aluminum Sulphate and Sulfuric Acid SC, told The Reporter that, the factory ceased production as of February 16, due to the critical shortage of raw material the factory faced in the wake of the closure of Bambo Wuha kaolin mine. “Our stock run out last week,” Teshome said.According to Teshome, his company has written a letter in detail, the challenges the factory is facing to the relevant government bodies. The company wrote to its board of directors chaired by Motuma Mekassa, minister of Mines, Petroleum and Natural Gas, the Ministry of Public Enterprises, Chemical Corporation, Construction and Chemical Inputs Development Institute and the Minerals, Petroleum and Bio Fuel Development Corporation.“We produce a chemical which is used to treat drinking water for the masses. We believe that the problem needs urgent solution, as it will not be able to supply aluminum sulphate to the cities’ water authorities,” Teshome told The Reporter.The state-owned company currently produces around 13,000 tons of aluminum sulphate and 17,000 tons of sulfuric acid annually, which are used in the production of leather, car batteries, cotton, and for water treatment. The company generates more than birr 100 million of revenue every year. Motuma, told The Reporter that, the MMPNG is working with the Oromia Regional State, local administration and Ethiopian Minerals, Petroleum and Bio Fuel Development Corporation, to amicably solve the problem. “To resolve the disputes sustainably, it is necessary to engage with the local communities,” Motuma said.Bambo Wuha kaolin mine began production 1992. The pilot plant has a capacity of producing 15,000 tons annually, but due to the prevailing domestic market demand, it’s production is limited to nearly 4,000 tons. May 18, 2015 - Awash Melkasa Aluminum Sulphate & Sulfuric Acid S.C. will begin production of hydrogen peroxide, a major input in the textile industry, by the end of June, 2015 at a plant it established at a cost of 234 million Br.The factory is located on 9,000sqm at Awash Melkasa, around 107 km from Addis Abeba. The state-owned company currently produces around 13,000tn of aluminum sulphate and 17,000tn of sulfuric acid annually, which are used in the production of leather, car batteries, cotton, and for water treatment.In the 2013/14 fiscal year, the company generated revenue of around 80 million Br, which was followed with a plan for 100 million Br for 2014/15.The company signed a turnkey contract with Nuberg Engineering Limited for the construction of the hydrogen peroxide manufacturing plant, which will have a production capacity of 4,500tn annually. The project is based on findings of a feasibility study conducted by Industrial Project Services, which is under the Privatization & Public Enterprises Supervising Agency (PPESA). Construction started in August 2013.Nuberg Engineering Limited, established in 1996, is an Indian maker of manufacturing equipment for various chemical plants, according to its website.Currently, Awash Melkasa’s plant is going through a pre-commissioning process, said Admassu Kabeto, the company’s CEO. On the first of June, it will start the commissioning process, which will take about one month, followed by the completion of the project, he added.The demand for hydrogen peroxide in Ethiopia can reach up to 900tn annually on average, according to the study by Industrial Project Service. In the 2014 fiscal year, around 678tn of hydrogen peroxide, worth 908,258 dollars, was imported into the country, according to the Ethiopian Revenues & Customs Authority.Awassa Textile, which is owned by Dukem Textile Plc, uses imported hydrogen peroxide for bleaching cotton. The textile factory, established in 1989, had been under state ownership but in 2011, the ownership was transferred to Dukem Textile Plc at a cost of 37 million Br. The company uses 400Kg of hydrogen peroxide monthly at a cost of 7,600Br to produce four tonnes of textile on a daily basis, said Tariku Assefa, purchasing head of Awassa Textile S.C.There are 130 medium and large scale textile factories in Ethiopia, of which 37 are owned by foreign investors. For the first Growth & Transformation Plan (GTP) period, the government has earned around 427 million dollars from the textile export trade, less than half the one billion dollars it had planned.In addition to use in the textile industry, hydrogen peroxide can also be used in the production of pulp, paper, milk treatment and cosmetics.In the international market hydrogen peroxide is sold for around 20 Br per kilogram. Admassu says their company will break into the market with a price of 14Br a kilogram.
February 14, 2012 -
The Awash Melkasa Aluminum Sulfate and Sulfuric Acid Factory announced plans
to establish a hydrogen peroxide factory in Ethiopia. The hydrogen peroxide
factory, which will begin construction soon will cost an estimated 155
million birr according to Admasu Tabaeto, Production and Technical Support
Process Owner with Awash Melkasa.
The factory is expected to have the capacity to produce 13,600 metric
tons of aluminum sulfate and 17,000 metric tons of sulfuric acid he said.
Awash Melkasa has been struggling with financial loss for several
years because it has been unable to access the market explained Admasu.
The factory has acquired better access to potential markets and is
now geared towards selling its products to the domestic market and for
export to Sudan Admasu said. It is no longer operating at a loss due to its
ability to access markets he noted.
The chemicals produced by the Awash Melkasa factory are primarily
used in the manufacture of textile products. |
|
MTPD - Metric Tonne per Day
STPD - Short Ton per Day
MTPA - Metric Tonne per Annum STPA - Short Ton per
Annum
SA - Single Absorption
DA - Double Absorption
* Coordinates can be used to
locate plant on Google Earth
