2 edition of Regeneration of spent pickle liquor found in the catalog.
Regeneration of spent pickle liquor
B. P. Martinez
|Statement||by B. P. Martinez.|
|Series||Information circular (United States. Bureau of Mines) -- 7672|
|Contributions||United States. Bureau of Mines.|
|The Physical Object|
|Pagination||18 p. :|
|Number of Pages||18|
The pickling process generates considerable quantity of spent pickle liquor (SPL) containing the dissolved metal salts as well as residual free acid. This SPL must be disposed of by chemical neutralization with alkali which consumes large chemical requirement or regenerated which is the safest way of economics and environment care. The PORI Process produces 20 degree Baume HCl directly from iron-chloride-bearing liquid wastes, including waste pickle liquor and spent leachate liquor from chlorine-based titanium dioxide processes.
treatment method of SPL, Safe disposal of sludge, utilization of sludge, acid regeneration methods and metals recovery from it. 2. Conventional treatment method of SPL Pickle liquor cannot ordinarily be processed recover usable by- products profitably. Spent liquor is a relatively dilute solution low-cost heavy chemicals. Therefore, most economical. The principal hydrochloric acid spent pickle liquor (SPL) regeneration process is the acid spray roasting process, which converts the spent pickle liquor (SPL) to between about 18% to about 20% hydrochloric acid solution containing approximately % iron and a fine iron oxide dust. The iron oxide is used for manufacturing magnetic products or.
Pickling is a metal surface treatment used to remove impurities, such as stains, inorganic contaminants, rust or scale from ferrous metals, copper, precious metals and aluminum alloys. A solution called pickle liquor, which usually contains acid, is used to remove the surface is commonly used to descale or clean steel in various steelmaking processes. variance from the requirement to manifest spent pickle liquor in transportation per OAC be granted by OEPA without limitation to a specific receiving company or facility location. AK Steel requests a variance from the hazardous waste manifesting requirements for FCS when transported to any legitimate recycling, regeneration or.
Prose of John Clare
phytogeographical study of South Greenland
profitability of coffee and maize among smallholders
The North American hunters handbook
Love and power in the peasant family
Gastrointestinal Pathology and Its Clinical Implications
Orders of magnitude
Temperature-electromotive force reference functions and tables for the letter-designated thermocouple types based on the ITS-90
Additional Physical Format: Online version: Martinez, B.P. Regeneration of spent pickle liquor. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, USA USA USA USA US A US A US A US A US A US A US A US A US A US A US A US A Authority US United States Prior art keywords liquor acid sulfuric acid ferrous sulfate pickle liquor Prior art date Legal status (The legal status is an assumption Cited by: There are several processes for the regeneration of spent hydrochloric pickle liquor.
A number of different process routes are available. The most widely used is based on pyrohydrolysis, hydro thermal and adiabatic absorption of hydrogen chloride in water, a process invented in the s.
recycle Regeneration of spent pickle liquor book regeneration of spent pickling liquor from steel pickling. The generation of spent pickling liquor can be mini-mized by following ways: (a) Use inhibitors in pickling solution which will increase the life of pickling solution (Narvaez et al.
; Tang et al. (b) Predict the concentration proﬁle of a hydrochloricCited by: Page 2 of 6 Spent Pickle Liquor Rev. 5/15 Section 4 – First-Aid Measures Description of Necessary Measures: Inhalation: If inhaled: Remove person to fresh air and keep comfortable for breathing.
Eye Contact: If in eyes: Rinse with water for 20 contact lenses. Continue rinsing Skin Contact: If on skin: Wash with skin irritation occurs: Get medical advice/attention.
USA USA USA USA US A US A US A US A US A US A US A US A US A US A US A US A Authority US United States Prior art keywords acid spent regeneration body solution Prior art date Legal status (The legal status is an assumption and is not a.
The treatment of spent pickling liquor Neutralization SPL and SSL cannot just be discharged due to the environmental reasons described, therefore the fate of these effluents is usually neutralized with alkali substances to encourage the precipitation of metal hydroxides, primarily Fe and Zn.
This exemption applies to spent pickle liquor. This notice exempts: (a) a consignor; (b) a transporter; and (c) a receiver of waste to which this exemption applies from Part 3 of the Regulation but only in so far as Part 3 applies to the transport of that waste by virtue of clause 18(1) of the Regulation.
for effective pickling, and “spent pickle liquor” must be replaced with fresh acid. It is estimated that about one-half of the steel produced in the United States is cleaned by the pickl- ing process.
The disposal of this spent pickle liquor and the associated rinse waters creates a pollution problem for the manufacturer. The sources of. Sustainable Acid Regeneration Solutions. The PVS Advantage. PVS owns and operates multiple Spent Pickle Liquor (SPL) processing facilities that are strategically located near major steel mills in the US.
This facilitates the continuous intake of SPL from the pickling lines and replenishment with fresh Hydrochloric acid, which helps our steel. Regeneration (PHAR) system, an innovative method of regenerating spent hydrochloric acid from steel pickling.
Conventional pickling technology generates billion gallons of spent pickle liquor nationwide each year, resulting in costly and energy-intensive handling, treatment, and disposal.
PHAR technology. Field of application. The commercially most relevant field of application for HCl regeneration processes is the recovery of HCl from waste pickle liquors from carbon-steel pickling lines.
Other applications include the production of metal oxides such as, but not limited, to Al 2 O 3 and MgO, as well as rare-earth oxides, by pyrohydrolysis of aqueous metal chloride or rare-earth chloride solutions.
Pickle liquor is used for dissolving metal surface impurities during the pickling process. The pickle liquor samples consisted mainly of 11–89 g/L HNO3, 20– g/L H2SO4, 5–57 g/L HF and.
Pickle liquor cannot ordinarily be processed recover usable by- products profitably. Spent liquor is a relatively dilute solution low-cost heavy chemicals. Therefore, most economical method for treatment of spent pickling liquor is neutralization with lime or some other cheap alkaline agent.
Process Description of Spray Roaster Hydrochloric Acid Regeneration Plant Preconcentration. The metal chloride solution (in the most common case waste pickle liquor from a carbon steel pickling line) is fed to the venturi evaporator (III), where direct mass and heat exchange with the hot roast gas from the roaster (reactor/cyclone) takes place.
In steel industries the hot rolled steel coil requires pre-treatment before undergoing various other processes like cold rolling, galvanising etc.
This pre-treatment is aimed to remove various oxide layers, rust or scale and other impurities from the. SUBPART A - GENERAL DOC: (85) Key Words: Pickle Liquor, Recycling, Surface Impoundment, Exclusion Regulations: Subject: Addressee: Originator: Source Doc: Date: Summary: Use/Reuse Exemption as Applied to Spent Pickle Liquor James H.
Scarbrough, Chief, Residuals Management Branch, Region IV John Skinner, Director, Office of Solid Waste #(85).
Total Costs for Electromembrane Acid-Regeneration Processes for Treating Spent Pickle Liquor (Size— Pounds of Iron Dissolved per Day) Conditions In batch-recycle process: Composition of spent pickle liquor: HzSCU - 25 g/1 (N) wt.
FeSO, - 74 g/1 (Ni wt. Composition of regenerated acid: H2SO» - 60 g/1 (SN) wt. FeSO. Waste pickle liquor is considered to be a major water pollutant as it is very corrosive due to the presence of high amounts of acids such as H 2 SO 4, HCl, HF and appreciable amount of iron and traces of other impurities.
Nowadays, environmental protections have become one of the most concerned issue in global activities. An alternative process is the NUgen™ Spent pickle liquor regeneration process.
Introduction The process of pickling is a metal surface treatment used to remove impurities, such as stains, inorganic contaminants, rust or scale from ferrous metals, copper, and aluminium alloys. After some other processes, α-Fe 2 O 3 red powder particles -by-product of regeneration of spent pickling liquor in ARP in iron and steel industry- should be ground up to pigment grade to convert it to a value added product, red iron oxide pigment.
In this study, grinding tests on α-Fe 2 O 3 red powder were performed using four different types of laboratory-scale mills, namely the vibrating.
This structure was designed and constructed to house the Acid Regeneration Process (ARP) equipment that recycles pickle liquor from a steelmaker's pickle line.
Metals to be coated require pre-treatment to remove rust or scale, impurities and inorganic contaminants. In steel industries, pickling process generates a considerable quantity of Spent Pickle Liquor (SPL) containing the dissolved metal salts of iron, chromium, copper, nickel and zinc as well as residual free acid.
The waste generated by metal pickling and electroplating industries is.