Benefits in bagasse fractionation by the soda process

2020-3-3 · discharge. Also, soda pulping has the advantage that sulfur free lignin and possibly silicic acid gel can be obtained which can be used in specialty applications further increasing the revenue for the pulp mill. This project is a preliminary investigation into soda pulping of Australian bagasse. Delignification processes

Recyclable Caustics | Beneficial Reuse | Merichem

2021-12-14 · As a cost-effective alternative to caustic materials, Merichem ® provides the pulp and paper and other industries with recyclable caustic products from caustic treating operations in various refinery and petrochemical processes. In addition to reducing chemical costs, this approach helps companies achieve sustainability goals by promoting beneficial reuse.

Application of Caustic Soda Lye in Paper and Pulp Industry

2020-9-28 · Caustic Soda Lye in Paper Industries. The chemical composition of caustic soda lye is one of the most widely used alkalis in various industries. This alkaline substance is used for different purposes in industries. The main consumption of caustic soda is due to adjusting the pH of the environment to alkaline and neutralizing acidic environments.

To be published in Part-I Section I of the Gazette of ...

2020-12-18 · all forms. Caustic Soda is chemically known as NaOH or Sodium Hydroxide. It is a soapy, strongly alkaline odorless liquid widely used in diverse industrial sectors, either as a raw material or as an auxiliary chemical. Caustic Soda is produced in two forms, lye and solids. Solids can be in the form of flakes, prills, granules or any other form. 4.


2015-3-4 · 1 The application and the tariff position 1 Sappi Fine Paper (Pty) Ltd applied for a rebate of the full customs duty on caustic soda lye (sodium hydroxide), classifiable under tariff subheading 2815.12, for the manufacture of wood free coated paper, classifiable under

(PDF) Hydrogen Peroxide and Caustic Soda: Dancing with …

2021-12-15 · Abstract. Abstract When hydrogen peroxide is mixed with caustic soda (NaOH), an auto-accelerating reaction can lead to generation of significant …

Kraft Pulping and Recovery Process basics

2017-6-16 · History • Soda pulping process patented, 1854. • Soda recovery via incineration patented, 1865. • First successful soda mill, 1866. • Kraft pulping process patented by Dahl, 1884. • First commercially viable kraft mill, Sweden, 1885. • Kraft recovery furnace, 1930''s.


In order to remove aluminum from the reflux liquors from the pickling process of extrusion dies and to regenerate the NaOH solution for re-employing the same in subsequent pickling processes, the process of synthesizing of zeolites is exploited, by previously adding a suitable source of silicon, said process of synthesis allowing the sodium hydroxide solution to be …

Lime in Pulp and Paper Mills | Graymont

Another common application is the Kraft-pulping process. This most-modern means of making pulp uses caustic soda (NaOH), among other chemicals, to dissolve the lignin. Kraft mills have two internal loops in their system working together to generate caustic soda. The first involves the caustic soda itself.

The Kraft Recovery Process

2008-1-4 · mill can generate 25 to 35 MW of electricity by burning 1500 t/d black liquor dry solids in its recovery boiler. The lowered pressure steam exiting from the turbine is used in various processes in the mill. OPERATIONAL PROBLEMS Although the kraft recovery process is straightforward in principle, it is not easy to operate at high efficiency. Many

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2020-9-22 · COMPLIANCE OFFICER. CS. Vritti Todi Choudhary 2/10 Sarat Bose Road Garden Apartment, Block-E, Floor-1 Kolkata -700020 Moblie No: 9929877340

Pulp Makeup Chemicals | Paper Chemicals | Merichem

2021-12-16 · Caustic Soda in the Kraft process or Sodium Hydroxide in soda pulping are used to break the lignin bonds of wood being processed into pulp for papermaking. Using recycled chemicals as makeup from other sources (spent caustics) aids in the reduction of the environmental impact of chemical pulping.

Application of Caustic Soda in Paper making

2019-9-10 · Application of Caustic Soda in Paper making. Caustic soda plays an important role in paper industry. Because of its alkaline properties, it is used in the process of cooking and bleaching paper. The raw material of paper making is wood or grass plants, which contain not only cellulose, but also quite a lot of non-cellulose (lignin, gum, etc.).

The Pulp and Paper Making Processes

2007-3-19 · THE PULP AND PAPER MILL Although there are several chemical and mechani-cal pulping methods used for delignifying wood (table 2-l), separating fibers, and removing discol-oration, all integrated pulp and paper mills involve the same general steps in the manufacture of pulp and paper. These steps include: 1 ) raw material

(PDF) Hydrogen Peroxide and Caustic Soda: Dancing with …

2021-12-15 · Abstract. Abstract When hydrogen peroxide is mixed with caustic soda (NaOH), an auto-accelerating reaction can lead to generation of significant amounts of heat and oxygen. Based on experiments ...


The versatility and consistent quality of our lime, silica, quartz & PCP products make them ideally suited for a wide range of uses in the chemical industry, including silicates, cosmetics, pharmaceutical & hygiene products, chemical …

Reduction of COD of Pulp and paper mill effluent using ...

2016-9-9 · caustic soda to produce brownstock, which is then washed with water to remove cooking (black) liquor for the recovery of chem-icals and energy [7]. Pulp is also manufactured from recycled paper. Mechanical pulp can be used without bleaching to make printing papers for applications in which low brightness is ac-

Re: How is a paper make? What''s the use of sodium ...

2000-6-14 · Paper is made continuously on large paper machines that are sometimes over 10 meters wide. The machine is very long, mostly because of the dryer section, often reaching lengths over 150 meters. At the end of the machine, the paper is collected on a big roll until it reaches the desired size (possibly around 20 tons).

Alloy selection for service in caustic soda

specific applications will depend upon factors associated with the concentration and use of the caustic and the process variables involved. A more detailed discussion of all aspects of materials selection for caustic soda is available elsewhere.2 In general, factors to be considered in materials selection

Pumping Sodium Hydroxide | AxFlow

2021-10-23 · Sodium Hydroxide is an inorganic compound, usually known as lye or caustic soda is an alkaline with a strong metallic base. Caustic soda is available in a number of forms including granules, pellets, flakes, and solutions prepared with different concentrations. Sodium hydroxide is used to increase the alkalinity of a combination to neutralize ...


2019-7-19 · Biological Treatment : recovered in all big mills 4. Semi chemical Caustic soda, Sodium sulphide, - Partially recovered in Sodium Hydrogen sulphide medium and big mills 5. Mechano- Caustic soda and mechanical grin- - No recovery chemical ding of raw material with water 6. Straw board Lime and caustic soda - No recovery and paper

Caustic Soda

Caustic Soda. Caustic Soda finds extensive application in paper, aluminium and various other industries for general purpose. TPL manufactures caustic soda, using a membrane cell process, as both lye and solid based on customer requirements. Caustic soda is …

Caustic Soda Plants – Protech Consultants Pvt. Ltd.

Scope: Basic & Detailed Engineering and project management services for 112.5 TPD caustic soda Plant for Primary brine treatment, Chlorine Handling & Liquefaction, Sodium Hypo section, Caustic Concentration unit and Utilities. Membrane Technology by UHDE. Year of Completion:2004.

Pulp and Paper Mills

high-strength papers and board. Wood chips are cooked with caustic soda to produce brownstock, which is then washed with water to remove cook-ing (black) liquor for the recovery of chemicals and energy. Pulp is also manufactured from re-cycled paper. Mechanical pulp can be used without bleach-ing to make printing papers for applications in

Application of Caustic Soda Lye in Paper and Pulp Industry

Alloy selection for service in caustic soda

LIQUID CAUSTIC SODA (Sodium Hydroxide)

2020-6-16 · Caustic soda is an essential ingredient in many industrial and commercial applications. It is a strong, colorless alkali. Caustic soda is manufactured through the electrolysis of sodium chloride (salt brine). Westlake Chemical produces liquid caustic soda as 50% and 73% solutions in water. Westlake is one of the largest global producers

Venturi Scrubbers in the Pulp and Paper Industry

Pulp & Paper: Great Northern Uses Venturi Scrubbers. The Great Northern Paper Co.''s mill in Millinocket, Maine, produces about 500,000 tpy of paper for telephone directories, magazines, almanacs, business forms, catalogs, and school workbooks. Pulp is produced in the form of chips, using the sulfite chemical process.

Caustic Soda (NaOH)

2021-12-14 · To learn more about Caustic Soda, Register with BYJU''S and download the mobile application on your smartphone. Frequently asked questions 1. List any two main uses of Caustic Soda. Ans: Caustic soda is used in the …

Western Michigan University ScholarWorks at WMU

2021-7-12 · with the caustic soda losses, recent environmental concerns about effluents from pulp ... The main application areas of membrane processes in pulp and paper industry are mill effluent treatment and boiler feed water treatment. ... Chemical recovery system in the pulp and paper mills is an integral part of overall manufacturing. A properly ...

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