Knowledge for the
Sulphuric Acid Industry 
![]()
Sulphuric Acid on the Web
		
		Introduction
General
Equipment Suppliers
Contractor
Instrumentation
Industry News
Maintenance
Acid
Traders
Organizations
Fabricators
Conferences
		Used
Plants
		Intellectual
Propoerty
		Acid
Plant Database
		Market
Information
		Library
Technical Manual
Introduction
General
Definitions
Instrumentation
Plant Safety
Metallurgial
Processes
Metallurgical
Sulphur Burning
Acid Regeneration
Lead Chamber
Technology
Gas Cleaning
Contact
Strong Acid
Acid Storage
Loading/Unloading
Transportation
Sulphur
Systems
Liquid SO2
Boiler Feed Water
Steam Systems
Cooling Water
Effluent Treatment
Utilities
Construction
Maintenance
Inspection
Analytical Procedures
Materials of Construction
Corrosion
Properties
Vendor Data
DKL Engineering, Inc.
		
Handbook of Sulphuric Acid Manufacturing
Order
Form
		Preface
		Contents
Feedback
Sulphuric Acid 
Decolourization
Order Form
Preface
Table of Contents
Process Engineering Data Sheets - PEDS
Order 
Form
Table of Contents
Introduction
Bibliography of Sulphuric Acid Technology
Order Form
Preface
Contents
Acid Plant Database May 2, 2024
| Owner | Ma'aden Phosphate Company | 
	
	![]()  | 
  ||
| Location | Kingdom of Saudi Arabia | |||
| Background | Waad Al Shamal Phosphate Project | |||
| Website | www.maaden.com.sa | |||
| Plant | Plant 1 | Plant 2 | Plant 3 | |
| Coordinates* | 31° 49' 27" N 39° 2' 60" E | 31° 49' 27" N 39° 2' 53" E | 31° 49' 27" N 39° 2' 47" E | |
| Type of Plant | Sulphur Burning | Sulphur Burning | Sulphur Burning | |
| Gas Source | 
	Elemental Sulphur Refinery, Molten  | 
    
	Elemental Sulphur Refinery, Molten  | 
    Elemental Sulphur Refinery, Molten  | 
  |
| Plant Capacity | 5050 MTPD | 5050 MTPD | 5050 MTPD | |
| SA/DA | 3/1 DA | 3/1 DA | 3/1 DA | |
| Emissions | - | - | - | |
| Status | Operating | Operating | Operating | |
| Year Built | 2016 | 2016 | 2016 | |
| Technology | MECS | MECS | MECS | |
| Contractors | SNC-Lavalin/Sinopec Engineering Group (SEG) | SNC-Lavalin/Sinopec Engineering Group (SEG) | SNC-Lavalin/Sinopec Engineering Group (SEG) | |
| Remarks | Power Generation: 2x75 MW | |||
| Pictures | 
	
	![]()  | 
    
	
	![]()  | 
    
	
	![]()  | 
  |
	
	  
	
	  
	
	![]() Tower Replacement - Mammoet   
	
	![]()  | 
  ||||
| General | Project 
	Award: February 2014 Storage Tank Design and Fabricator: sasec.com.sa The total value of the contract is approximately USD$764 million with SNC-Lavalin’s portion estimated at USD$500 million.  | 
  |||
| Reference | - | |||
| News | 
	April 30, 2024
	- US fertilizer company Mosaic is 
	selling its 25% stake in an $8 billion Saudi Arabian phosphate 
	production joint venture to the country’s flagship miner Ma’aden, in a stock 
	deal worth about $1.5 billion.  
	
	 March 28, 2023 - The Ma’aden Waad Al Shamal Phosphate 
	Company (MWSPC), based in Saudi Arabia, is the latest company to have 
	benefitted from Mammoet’s specialised logistics offering. 
	MWSPC operates some of the largest and busiest fertiliser plants 
	anywhere in the world, including the Umm Wu’al Sulphuric Acid and Power 
	Plant. This plant is in a new industrial city in the extreme northeast of 
	the kingdom. Structured around three sulphuric acid trains containing a 
	total of nine vast process towers, it produces almost 14,000 t/d of 
	fertiliser a day.  When the 
	company was looking to upgrade the facility, and replace the original towers 
	with cleaner, more efficient equivalents, it needed to keep downtime to an 
	absolute minimum. To compound the issue, the towers had originally been 
	stick-built; not designed to be lifted in one piece when they needed to be 
	replaced. The conventional approach for dismantling them piece-by-piece 
	would take several months for each train. 
	Fluor, the project consultant, reached out to Mammoet to lift out the 
	old towers in one piece. With careful planning, sophisticated computer 
	modelling, the right equipment, and an expert team, Mammoet was able to 
	develop the solution to delicately lift out the old towers intact, then 
	manoeuvre the modular replacements into position. 
	To convince MWSPC and Fluor that this unlikely operation could be 
	achieved, Mammoet prepared a detailed engineering study. Three dimensional 
	digital models of each tower were supplemented by a series of ultrasonic 
	tests to reveal their true structure and strength. A finite element 
	simulation showed how they would respond to the pressure of being hoisted 
	out of the plant. And a series of bespoke frames and slings were designed to 
	safely cradle the towers throughout the move. 
	A key requirement was to draft in the right equipment, and Mammoet 
	had two crawler cranes – the 1,600-t capacity CC8800-1 and 1,250-t capacity 
	CC6800 – and the 3,200 t MSG-80 ring crane in place for this. With this 
	combination, it became possible to reach far above the tight confines of the 
	site, extract all nine of the towers, move them to a central staging area, 
	and hoist the replacements into position, according to the company. 
	Abdullah Terkaoui, Project Manager for Mammoet, explains: “Our 
	methodology enabled our customers to reduce the planned shutdown schedule 
	for each train from 120 days to 45 days. Then, as the operation progressed, 
	further time savings were realised: the complete shutdown of the first train 
	was completed in 30 days; the second shutdown, where the lifts took only 
	seven days, enabled completion in 22 days; and, for the third, the lift took 
	just three days, with a total mechanical completion in 19 days. 
	“This meant that, thanks to the entire project team and everyone 
	involved, all three shutdowns were completed two months (64 days) ahead of 
	the original schedule – representing a time saving of over 50%.” 
	Nayef Rowily, Project Director for MWSPC, stated that considerable 
	effort was put into reviewing Mammoet’s plan repeatedly, while keeping in 
	mind the nature of the job, which involved integration in a brownfield and 
	MWSPC’s strong desire to maintain production: “This was accomplished through 
	excellent teamwork, including assessing all risks associated with the scope. 
	Ultimately, we are pleased with Mammoet’s performance across all three SAP 
	train tower replacements. They surpassed our expectations, and the site team 
	did an exceptional job in delivering the project in record time. The MWSPC 
	team takes pride in this significant achievement and recommends Mammoet’s 
	expertise on a global scale.” 
	
	January 8, 2016 - The Saudi 
	Arabian Mining Co. (Ma’aden) has announced the approval of a Saudi 
	Industrial Development Fund loan of Saudi Arabian riyal 4bn ($1bn*) for the 
	Ma’aden Waad Al Shamal Phospahte Co. (MWSPC). 
	The loan is split into four facilities, each of which provides 
	separately for the construction of an ammonia plant in Ras Al Khair, a 
	diammonium phosphate (DAP) plant in the same city, a sulphuric acid plant in 
	Waad Al Shamal and a phosphate plant, likewise in Waad Al Shamal. 
	Ma’aden said that the loans would complete the debt financing of its 
	phosphate joint venture. Saudi Basic Industries Corp. (SABIC) and 
	US-based Mosaic Co. retain 15% and 25% 
	stakes in the business, respectively. February 4, 2014 - SNC-Lavalin in consortium with Sinopec Engineering Group (SEG), has signed a contract with Ma'aden in Saudi Arabia to provide engineering, procurement, construction, commissioning and start-up services for a three-line 15,150-metric-tonne-per-day sulphuric acid plant. Also included in the agreement are two 75-MW power plants that will recover heat generated by the acid plant operations. The total value of the contract is approximately USD$764 million with SNC-Lavalin's portion estimated at USD$500 million.The project was awarded as part of Ma'aden's Waad Al Shamal Phosphate Project, which involves the conversion of phosphate ore from the Al Khabra mine into various end products, primarily for the agricultural sector. The contract signing was formalized at a ceremony held in Turaif, Saudi Arabia today with the participation of the Saudi Royal Family, Government Ministers and various dignitaries.The sulphuric acid plant will use industry leading technology from MECS, Inc. (a wholly-owned subsidiary of DuPont) to produce acid and generate power through the efficient recovery of process waste heat. The project, scheduled to be operational in the fourth quarter of 2016, will be one of the largest complexes of its kind."We are honoured to be part of a project that will support Ma'aden in its mandate to develop its mineral resources and increase industrial development in the Northern Province and Al-Jouf areas of Saudi Arabia," said Dale Clarke, Executive Vice-President, SNC-Lavalin Group Inc.SNC-Lavalin is a longstanding leader in the sulphuric acid industry, having successfully installed more than 60 plants around the world over the past 25 years. Maaden also signed the contract for building a phosphoric acid plant worth SR3,506 million ($935 million) to Hanwha Engineering & Construction Co. Ltd & Hanwha Saudi Contracting Co. Ltd. The phosphoric acid plant which will consist of three phosphoric acid lines when completed will have a production capacity of 1.5 million tons.  | 
  |||
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