process selection of acid treating processes

ANALYSIS OF ALTERNATIVES

Surface Treatment Processes steps where sodium dichromate might be involved..... 2 Figure 2: Illustration of the development, qualification, certification and industrialisation process required in the

Selection of wastewater treatment process based on the ...

aerobic treatment processes operated in Iran's industrial estates and determining the main criteria used for treatment process evaluation, they are arranged in a hierarchy structure. Selection of the best wastewater treatment process is a multi-criteria decision making problem.

Acid gas treating process selection basis - EngStack

Acid gas treating selection basis: Type of acid contaminants present in the gas stream; Concentrations of each contaminant and degree of removal required; Gas volume, temperature, and pressure; The desirability of selectively removing one or more of the contaminants without removing the others; The feasibility of recovering sulfur

Treatments for acid mine drainage — Science Learning Hub

It is a truth in geochemistry, as it is in life, that some things are better left buried – especially when it comes to sulfide-bearing minerals in rocks. The sulfides in these rocks, when exposed to air and water, usually by mining activity, break down to release acid that can mobilise trace elements such as arsenic, zinc, nickel, boron, copper and others from waste rock and tailings into ...

Biological Wastewater Treatment: Selecting the Process ...

Oct 01, 2013· (Page 1) Chemical, pharmaceutical and related industries produce large amounts of wastewater in their production and cleaning processes. The wastewater characteristics are often diverse, and may include minimally biodegradable or toxic substances, or both. This article explains how a biological wastewater-treatment process was developed for a challenging situation where the …

Treating Processes

Treating Processes Thioalcohols or thiols, more commonoly known as mercaptans, are a family of organic sulfur compounds present in a wide variety of untreated petroleum distillates, such as LPG, naphtha, kerosene, and gas oils. Specific mercaptans found in petroleum distillates originate in the crude or may form during subsequent crude refining.

An expert system to select acid gas treating processes for ...

Jan 01, 1993· For any given problem of acid gas treating, the fuzzy expert system was useful in selecting a subset of acid gas removal processes for more rigorous technical and economical evaluation. 2 The method using applicability matrices to develop fuzzy expert systems is straightforward and should be applicable to other selection problems in which ...

Hammerfest LNG process 2008 - NTNU

• Specifications is important for process selection • The water removal process start at the wellhead • Typical processes –Cooling and expansion combined with separation process –Absorption process –Adsorption process • The natural gas will be saturated with water from the amine process.

Effective Treatment Options for Acid Mine Drainage in the ...

by using natural and biological processes. West ia has to treat a large amount of drainage and utilizes different systems at the numerous treatment sites throughout the state. Governmental agencies dealing with the environment are in charge of managing and installing these systems, or …

Acid gas treating - ScienceDirect

Jan 01, 2006· Optionally, the process can be used to produce natural gas liquids. 7.2.6 Process Selection Each of the previous treating processes has advantages relative to the others for certain applications; therefore, in selection of the appropri­ ate process, the following facts should be considered (Morgan, 1994; GPSA, 1998).

Amine gas treating - Wikipedia

Amine gas treating, also known as amine scrubbing, gas sweetening and acid gas removal, refers to a group of processes that use aqueous solutions of various alkylamines (commonly referred to simply as amines) to remove hydrogen sulfide (H 2 S) and carbon dioxide (CO 2) from gases. It is a common unit process used in refineries, and is also used in petrochemical plants, natural gas processing ...

(PDF) A Simulation of Claus Process Via Aspen Hysys for ...

An expert system was developed to select near-optimum acid gas treating processes in natural gas processing plants using heuristic knowledge from experts and literature.

Acid Gas Treating Process Selection | Hydrocarbon Compression

Each of the previous treating processes has advantages relative to the others for certain applications; therefore, in selection of the appropriate process, the following facts should be considered: 1. The type of acid contaminants present in the gas stream. 2. The concentrations of each contaminant and degree of removal desired. 3.

SWEETENING TECHNOLOGIES – A LOOK AT THE WHOLE …

- acid gas disposal method: venting or reinjection - energy costs - inlet gas pressure and CO 2 content - CO 2 specification - power availability, remoteness of location Most selection guidelines focus on the sweetening process and consider it as an isolated facility.

Recovery of acids and bases used in metal treatment ...

Abstract. The recovery of waste acid has been successfully achieved for a number of years using various processes. DD (Diffusion Dialysis) has been shown to be an attractive process on a commercial scale, because of its simplicity, reliability and relatively low operating cost.

Acid and Sour Gas Treating Book - rschendel.com

The selection of a physical solvent process depends on process objectives and characteristics of the solvents, such as selectivity for H 2 S, COS, HCN, etc., ease of handling water content in feed gas, ease of controlling water content of circulating solvent, concurrent hydrocarbon loss or removal with acid gas removal, solvent cost, solvent ...

Acid and Sour Gas Treating Processes (Book) | OSTI.GOV

@article{osti_5786250, title = {Acid and Sour Gas Treating Processes}, author = {Newman, S H}, abstractNote = {Here is a single source of the latest data and methods for selecting and designing economical gas treating processes. It includes papers from the 1984 Symposium on Acid and Sour Gas Treating Processes and covers pollution abatement, coal liquefaction, flue gas desulfurization, …

Gas treating and processing - PetroWiki

Jun 02, 2015· Free of dust, treating chemicals, and other contaminants from the process plant. In long distance transmission of sales gas by pipeline, the pressure is usually less than 1,000 psig. It is important that no liquids form in the line because of condensation of either hydrocarbons or water.

Column Optimization for Amine Based Acid Gas Removal …

absorption processes. For gas treatment, amines d to react with undesirables acid gases. A typical process based on an amine solution is shown in the Figure 1. These processes can support large quantities of H 2 S economically, and CO 2 may also be controlled if necessary. Figure 1. Flowsheet of an absorption process by amines. [2]

(PDF) Gas sweetening process | SUBHASISH MITRA - Academia.edu

A Technical Report on Gas Sweetening by Amines Subhasish Mitra, Sr. Process Engineer Petrofac Engineering (I) Ltd, Mumbai, India Gas sweetening by amine Content 1.0 Introduction 3 2.0 Gas sweetening basics 7 3.0 Alkanolamine gas treatment basics 8 4.0 Alkanolamine gas treating chemistry 13 5.0 Alkanolamine processes-strengths and weakness/solvent selection 20 6.0 Amine system …

(PDF) Selection of Amine in Natural Gas Sweetening Process ...

Selection of Amine in Natural Gas Sweetening Process for Acid Gases Removal: A Review of Recent Studies ... There is a number of absorption gas treating processes, ... This provides a fluid ...

A Summary of Passive and Active Treatment Technologies …

filtration/settling, ion exchange and crystallisation. By far the most common process for treating AMD is via pH control. The selection of an appropriate treatment system requires an understanding of the "Acidity", flow rate and "Acidity Load" (ie. the product of Acidity and flow rate) of …

Acetic Acid Process Plant Design - SlideShare

2. Process Selection 2.1 Process Technology Selection The methanol carbonylation, direct oxidation of n-butane and direct oxidation of ethylene are the three most widely implemented methods to manufacture acetic acid. Methanol carbonylation also known as the "Monsanto process" was initially developed by …

PROCESS SIMULATION AND IMPROVEMENT OF INDUSTRIAL …

Acid gas removal process, which is also known as gas sweetening process, is a very important industrial operation that has been described in many works. The main processes installed are based on absorption, and the selection of the solvent is based on its capability to absorb or remove acid gases such as carbon dioxide (CO2)