Thermal power Station Construction by Limult

Intelligent thermal power plant concept

With the upgrading of productivity, the complexity and dynamics of business activities and the ability to gradually exceed the capabilities of human analysis and optimization, it is necessary to rely on intelligent technology instead of humans for process management, data analysis, decision optimization, and the core goal is to achieve intelligent production activities. The high degree of unity allows the system to work together.

Intelligent thermal Power Plants value and Goals

 In this theoretical context, intelligent thermal power plants have the following three values and goals. First, intelligently realizes the potential hidden danger display of the device, enabling it to operate more efficiently and sustainably. Second, let the machine replace humans and assist the staff to carry out thermal power plant management and operation and maintenance. Third, the production and operation process of the power plant will be more transparent and synergistic, making the management process more flexible and effective. Focusing on the above objectives, the construction of intelligent power plants needs to focus on the three-dimensional dimensions of intelligent sensing, intelligent control and intelligent management.

The big data analysis generated by coal-fired power generation in
thermal power plants is used as a clue to deeply explore the value of data to
create more benefits. To this end, according to the latest definition of the
industry, it can be concluded that the intelligent thermal power plant is based
on modern digital information processing and communication technology, and
integrates technologies such as intelligent sensing, control, management and
execution to achieve synergy with the smart grid. A highly efficient, safe and
environmentally friendly thermal power plant.

At Limult we develop
new, unique construction methods for the installation of major equipment in
thermal power stations, namely boilers, turbines, and generators.

Our delivery records for thermal
power stations

  • Conventional
    thermal power stations that use oil, coal, gas, or other fuels
  • Combined
    cycle thermal power stations
  • Gas
    turbine generator power stations
  • Diesel
    thermal power stations
  • Gas
    engine and other special thermal power stations

Project scope

scope of our work includes construction (design, manufacturing, and
installation) and preventive maintenance (modification construction, update
construction, and maintenance).

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Hydro-Electric Power Station Construction by Limult

Hydroelectric power station

In hydroelectric power station the kinetic energy developed due to gravity in a falling water from higher to lower head is utilised to rotate a turbine to produce electricity. The potential energy stored in the water at upper water level will release as kinetic energy when it falls to the lower water level. This turbine rotates when the following water strikes the turbine blades. To achieve a head difference of water, hydroelectric electric power station are generally constructed in hilly areas. In the way of the river in hilly areas, an artificial dam is constructed to create required water head. From this dam water is allowed to fall toward downstream in a controlled way to turbine blades. As a result, the turbine rotates due to the water force applied to its blades and hence the alternator rotates since the turbine shaft is coupled with alternator shaft.

The main advantage

An electrical power plant does not require any fuel. It only requires water head which is naturally available after the construction of the required dam.

No fuel means no fuel cost, no combustion, no generation of flue gases, and no pollution in the atmosphere. Due to the absence of fuel combustion, the hydroelectric power plant itself is very neat and clean. In addition to that, it does not produce any pollution to the atmosphere. Also from constructional point of view, it is simpler than any thermal and nuclear power plant.
The constructional cost of a hydroelectric power plant maybe higher than that of other conventional thermal power plants because of construction of a huge dam across the flowing river. The engineering cost in addition to the constructional cost is also high in a hydroelectric power plant. Another disadvantage of this plant is that it cannot be constructed anywhere according to the load centres.
So, long transmission lines are required to transmit the generated power to the load centres.

Limult is a
leader in the design of hydroelectric power plants, with years of experience in
the design and development of these projects. Limult has participated in feasibility studies, preliminary and
tender design, procurement and/or the construction management for major
hydropower projects.

Limult’s expertise in hydroelectric power projects includes:

  • Feasibility Studies
  • Hydropower Engineering
  • Environmental Impact Assessments and Reports
  • Site Investigations
  • Civil, Structural and Mechanical Design
  • Cost Estimates
  • Contract Documents
  • Tender Evaluations
  • Project Management
  • Project Planning
  • Construction Supervision
  • On-site Inspections

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Electricity Generation in Nigeria by Limult

Nigeria is endowed with large oil,
gas, hydro and solar resources, and it has the potential to generate 12,522 MW
of electric power from existing plants. On most days, however, it is only able
to dispatch around 4,000 MW, which is insufficient for a country of over 195
million people. Power Africa technical support to distribution companies in
Nigeria helped them increase revenue by over $250 million - money that can be
reinvested into the distribution network, improving service and expanding
access. The Nigerian power sector experiences many broad challenges related to
electricity policy enforcement, regulatory uncertainty, gas supply,
transmission system constraints, and major power sector planning shortfalls
that have kept the sector from reaching commercial viability.

Electric Demand and Electrification rate

Nigeria has an electrification rate of 45% and despite this relatively low figure in conjunction with the significant issues undermining power supply in the country, demand for electricity keeps increasing. In 2015, power supply in Nigeria averaged 3.1 GW, which was estimated to be only a third of the country’s minimum demand, with many consumers forced to rely on privately owned generators.

Causes of Failure in the Electrical distribution In Nigeria

The factors include inconsistent and misguided power reform policies; inefficiency in power generation, transmission, distribution and consumption;
and the incompetent work force of the energy companies.

Having stated the above problems of electrical
distribution in Nigeria, Limult Group is presently leading the path of
sustainable and 24/7 uninterrupted power supply to the above mentioned problems
which are;

  • Solving barriers in the gas-to power value chain: this is done by launching a federal coordination mechanism covering gas supplies, generation, transmission and distribution.
  • Plan for renewable energy integration: complete development of the 14 planned solar plants.
  • Investing in new grid infrastructure to facilitate integration of intermitted source.
  •  Integrate mini-grids into DisCo networks to supply power to underserved areas.

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Liquefied Natural Gas Plant by Limult

The earth has enormous quantities of
natural gas, but much of it is in areas far from where the gas is needed. To
move this cleaner-burning fuel across oceans, natural gas must be converted
into liquefied natural gas (LNG), a process called liquefaction.

What is LNG –
liquefied natural gas?

is natural gas that has been cooled to –260° F (–162° C), changing it from a
gas into a liquid that is 1/600th of its original volume. This reduction in volume enables the gas to be transported
economically over long distances.

Liquefaction plants

 LNG liquefaction plants are generally
classified as baseload or peak shaving, depending on their purpose and size.
The process for the liquefaction of natural gas is essentially the same as that
used in modern domestic refrigerators, but on a massive scale. A refrigerant
gas is compressed, cooled, condensed, and let down in pressure through a valve
that reduces its temperature by the Joule-Thomson effect. The refrigerant gas
is then used to cool the feed gas. The temperature of the feed gas is
eventually reduced to −161°C, the temperature at which methane, the main constituent
of natural gas, liquefies. At this temperature, all the other hydrocarbons in
the natural gas will also be in liquid form. In the LNG process, constituents
of the natural gas (propane, ethane, and methane) are typically used as
refrigerants either individually or as a mixture. Feed pretreatment and
refrigerant component recovery are normally included in the LNG liquefaction
facility. LPG and condensate may be recovered as byproducts.

How do we use

LNG is returned to a
gaseous state at LNG import and regasification terminals around the world. Once
it has been warmed to become natural gas, it is dispersed through pipelines for
use by homes and businesses. It can be used in a variety of ways: Residential
uses for natural gas include cooking, heating homes and generating electricity,
while commercial uses for natural gas include heating, generating electricity,
manufacturing products like fertilizers, paints and medicines, and occasionally
fueling commercial vehicles.

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Nigeria Minerals, Energy and Power by Limult

Nigeria has a variety of both renewable and nonrenewable resources, some of which have not yet been effectively tapped. Solar energy, probably the most extensive of the underutilized renewable resources, is likely to remain untapped for some time.

Resources extraction

This is the most important sector of the economy. The most economically valuable minerals are crude oil, natural gas, coal, tin, and columbite (an iron-bearing mineral that accompanies tin). Petroleum, first discovered in 1956, is the most important source of government revenue and foreign exchange. Most of the oil output comes from onshore fields in the Niger delta, although an increasing proportion of the crude is produced at offshore locations. There are oil refineries at Port HarcourtWarri, and Kaduna. Nigeria has been a member of OPEC since 1971.

There are vast reserves of natural gas, but most of the gas produced is a by-product of crude oil. In the past this was burned off, as there was no market for it, but production has since increased, and Nigeria became a globally ranked exporter of this commodity. Production has often been interrupted by protests, as the inhabitants of the oil-producing regions have demanded a larger share of the revenues.

Nigeria possesses significant reserves of coal, but these deposits are being developed gradually. Coal is used by the railroad, by traditional metal industries, and by power plants to generate electricity. Coal mining, initially concentrated around the city of Enugu and its environs, began in 1915. It declined after the late 1950s with the discovery of oil but subsequently increased. Substantial coal reserves of varying quality can be found in south-central states in a band that stretches from Benin to Cameroon. Deposits discovered more recently in the southwestern part of the country at Lafia-Obi are being developed for the Ajaokuta steel complex.

The Jos Plateau, where tin mining began in 1905, also contains columbite. By the early 21st century, the country’s tin-smelting capacity had not been reached, a result of diminished world demand in the late 1980s; production of columbite has also declined since the mid-1970s. There are iron ore deposits in the Lokoja area, and limestone occurs in many areas, where it is widely exploited for manufacturing cement and for use in the steel industry. Extensive iron ore deposits found in Kwara state have been exploited since 1984. Other mined minerals include gypsum, kaolin, barite, gold, sapphires, topazes, and aquamarines. There are also uranium deposits in the country.

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Bonny Island Liquified Natural Gas Plant Development by Limult

The Plant

​ The plant ranks amongst the biggest and top performers worldwide; its performance is regularly benchmarked internationally with other LNG plants around the world.

The plant has rapidly and successfully made the transition
from a construction project to a stable production operation, with a robust
framework of people, processes, systems and organisation, as well as relentless
focus on operational excellence and continuous improvement. In addition to
regular maintenance of the assets to assure integrity and reliability,
opportunities are continuously sought to debottleneck the plant, incorporating
proven techniques and processes to maximize production and manage human
interferences and impacts. The plant has also embarked on a structured
programme of asset rejuvenation to extend the plant life beyond the current
design life. All these activities are underpinned by a Health, Safety, Security
and Environment (HSSE) culture that continually seeks improvements in the safe
and sustainable utilisation of our assets.

For NLNG, November 1995 will remain a remarkable month in
its corporate history. That was when the Final Investment Decision (FID) was
taken by the shareholders to build a Liquefied Natural Gas (LNG) plant in
Finima, Bonny Island in Rivers State. This was followed in December 1995 by the
award of a turnkey Engineering, Procurement and Construction (EPC) contract to
a consortium of engineering firms, TSKJ, comprised of Technip, Snamprogetti,
M.W. Kellog and Japan Gas Corporation for the Plant (consisting of two
trains—Trains 1 and 2, called the Base Project), the Gas Transmission System
(GTS) and the Residential Area (RA).

Construction at the Plant site commenced in February 1996
and on August 12, 1999, Train 2 was ready for startup. Production of LNG
commenced on September 15. Train 1 subsequently came on stream on February 27,
2000. The second phase of development, called Expansion Project, commenced with
an FID in February 1999 to develop Train 3 and the Plant's Natural Gas Liquids
(NGLs) Handling Unit (LHU)—condensate stabilisation and Liquefied Petroleum Gas
(LPG) production units. The expansion project was completed and came into
operation in November 2002.

The next phase of development called the NLNGPlus Project,
comprised of Trains 4 and 5, commenced with an FID in March 2002. Train 4 came
on stream in November 2005 and Train 5 was started up I February 2006. NLNGSix
Project, consisting of Train 6 and additional condensate processing, LPG
storage and jetty facilities, commenced with an FID in 2004. Train 6 became
operational in December 2007.

With six trains currently operational, the entire complex is
capable of producing 22 million tonnes per annum (mtpa) of LNG, and 5mtpa of
NGLs from 3.5 Billion (standard) cubic feet per day (Bcf/d) of natural gas

Plans for building Train 7 which will lift the total
production capacity to 30mtpa of LNG are currently progressing. FID for the
8mtpa train was taken in December 2019, paving the way for the award of
Engineering, Procurement and Construction Contracts to SCD JV Consortium in May
2020. Find out more about Train 7 Project.

​The main elements of the facilities already in operation

Diversified gas supply (Associated Gas and Non-Associated
Gas) and six main dedicated gas transmission pipelines, with four of them
located on-shore.

Six LNG processing units (trains) with a total nameplate
processing capacity of 22mtpa.

Four LNG storage tanks, each with a capacity of 84,200 cubic

Four LPG refrigerated storage tanks, each with a capacity of
65,000 cubic metres (two each for propane and butane).

Contact Us at +2347052446249 for more information on our refining industry development services or visit our store at to see more products that we make available for the people.