Nalco Holding Company, a wholly owned subsidiary of Ecolab Inc.; is a Naperville, Illinois based supplier of water, energy and air improvement solutions and services for industrial and institutional markets. The company sells various products and services designed to reduce energy, water and other natural resource consumption, enhance air quality, minimize environmental releases and improve productivity and end products.The company was originally founded in 1928 as the National Aluminate Corporation, formed from the merger of Chicago Chemical Company and the Aluminum Sales Corporation. By a series of mergers and acquisition, its name changed to Nalco Chemical Company ; then Ondeo Nalco Company ; and in 2004 to Nalco Holding Company. It became a subsidiary of Ecolab Inc. in December 2011 after the completion of the US$5.4 billion acquisition by Ecolab.Nalco currently serves more than 70,000 customers employing over 11,500 employees operating in over 130 countries. Among its products is Corexit - an oil dispersant widely used in the Deepwater Horizon oil spill. Wikipedia.
Nalco Company | Date: 2017-04-06
Certain aspects of the present disclosure relate to a fluid treatment reactor. Separate input ports for influent and recycled effluent serve to eliminate the need for pH adjustment or carbonate stripping of the influent and recycled effluent flows. The fluid treatment reactor may include a media, a vessel including a top portion and a bottom portion, a solid discharge port, an effluent discharge port, an influent input in fluid communication with the media, and a recycled effluent port in fluid communication with the media.
Nalco Company | Date: 2017-03-31
A method of optimizing system parameters in a crude unit to reduce corrosion and corrosion byproduct deposition in the crude unit is disclosed and claimed. The method includes measuring or predicting properties associated with the system parameters and using an automated controller to analyze the properties to cause adjustments in the chemical program to optimize the system parameters. Adjusting the system parameters effectively controls corrosion in the crude unit by reducing the corrosiveness of a fluid in the process stream and/or by protecting the system from a potentially corrosive substance. System parameter sensing probes are arranged at one or more locations in the process stream to allow accurate monitoring of the system parameters in the crude unit.
Nalco Company | Date: 2016-08-16
The invention provides methods and compositions for inhibiting the accumulation of DSP scale in the liquor circuit of Bayer process equipment. The method includes adding one or more GPS-surfactant based small molecules to the liquor fluid circuit. These scale inhibitors reduce DSP scale formation and thereby increase fluid throughput, increase the amount of time Bayer process equipment can be operational and reduce the need for expensive and dangerous acid washes of Bayer process equipment. As a result, the invention provides a significant reduction in the total cost of operating a Bayer process.
Nalco Company | Date: 2016-11-08
The invention provides a method of inhibiting the accumulation of DSP scale in the liquor circuit of Bayer process equipment. The method includes adding one or more particular silane based small molecules to the liquor fluid circuit. These scale inhibitors reduce DSP scale formation and thereby increase fluid throughput, increase the amount of time Bayer process equipment can be operational and reduce the need for expensive and dangerous acid washes of Bayer process equipment. As a result, the invention provides a significant reduction in the total cost of operating a Bayer process.
Nalco Company | Date: 2016-10-04
A method of correcting measurements of a chemical sensor used in an industrial facility. The method involves correcting for errors known to occur in the steady state and the dynamic state for specifically recognized situations. This method allows for correcting errors that occur due to deadtime, false zero measurements, and non-linear disturbances. The method combines automated measurement techniques and human know how to progressively learn and refine the accuracy of the corrections.
Nalco Company | Date: 2017-05-24
The invention provides methods and compositions for enhancing the digestion of pulp in a chemical pulping process. The method uses ultra-low, economically feasible dosages of BH applied right before the pulping process begins, in a stable alkaline solution fed into white liquor line, to improve the process by saving pulping chemicals, increasing pulp brightness and yield and reducing the kappa number.
Nalco Company | Date: 2016-02-08
This invention is method of producing a creping cylinder adhesive comprising: contacting a dry form PVOH with a liquid form PVA at a temperature of less than 80 C., maintaining the PVOH and PVA at a temperature of between 90-95 C. until the PVOH is completely dissolved into a medium, and allowing the medium to cool to below 80 C.
Nalco Company | Date: 2016-09-21
Methods of improving dewatering efficiency, increasing sheet wet web strength, increasing sheet wet strength, and enhancing filler retention in a papermaking process are disclosed. The methods improve the efficiency of drainage aids, wet web strength aids, and/or wet strength aids by coating at least some of the filler particles with a material that prevents the filler materials form adhering to a those additives.
Nalco Company | Date: 2016-07-14
A material containment and delivery system includes a base assembly and a vessel comprising a housing configured to contain a material. In embodiments, the base is a free standing assembly, is anchored to the ground or a structure, is configured to be coupled to a vehicle, and/or the like. The vessel may be rotatably coupled to the base assembly near the second end, and may include a positioning assembly configured to move the vessel from a first position to a second position. The system may further include a load cell assembly, coupled to the positioning assembly and configured to determine a weight of material within the vessel.
Nalco Company | Date: 2016-01-11
In the mining process, linear, branched, hyperbranched or dendrimeric polyols or mixtures thereof are employed as process stabilization aids for aqueous solutions and, or suspensions of metal salts. A specific application area of the polyols is the stabilization of bauxite liquor in the Bayer process of producing alumina from bauxite.