Page 187 - CW E-Magazine (12-12-2023)

PARACHLORO META CRESOL We manufacture C.P. & A.R. GRADES
Acetophenone Dicyclohexylamine Itaconic Acid Para Phenetidine In 500 ml. to 2.5 lit Glass bottle, 35 kgs., 50 kgs. Special Report
Benzaldehyde Formic Acid 99% magnesium Oxide Succinic Acid / Anhy. ACID CHLOROSULPHONIC
Lithium Hydroxide Hexylene Glycol N-Butyl Amine Tributyl Amine (Commercial) 200 Kgs. MS Drum
Cinnamic Acid Iso Amyl Alcohol Pure Phthalimide Triphenyl Phosphine Acid Hydrochloric 32% & 36% Internal corrosion in gas and crude oil pipelines
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QUATERNARY PHOSPHONIUM / AMMONIUM / COMPOUNDS Acid Hydrofluoric 40% & 60%
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Benzyl Triphenyl Phosphonium Chloride Tetra-Butyl Ammonium Bromide / Iodide Acid Sulphuric
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Cetyl Trimethyl Ammonium Bromide Tetra-Butyl Ammonium Hydrogen Sulphate Acid Nitric 58% & 70% INTRODUCTION After the gas is extracted from the
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Ethyl Triphenyl Phosphonium Bromide Tetra-Ethyl Ammonium Bromide / Iodide Acid Nitric Fuming 98% here are millions of kilometres underground reservoir, it is processed DR. S.K. CHAKRAVORTY
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Ethyl Triphenyl Phosphonium Iodide Tetra-Propyl Ammonium Bromide Acid Chlorosulphonic (Distilled) of pipelines carrying natural and purifi ed to some extent by remov- Consultant (Plant Engineering)
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Butyl Triphenyl Phosphonium Bromide Triethyl Benzyl Ammonium Chloride Ammonium Chloride Email: chakravorty4410@gmail.com
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methyl Triphenyl Phosphonium Bromide Tributyl Benzyl Ammonium Chloride I.P.A. in HCl Gas 25% to 28% Tgas and crude oil in the world. ing some of the acidic gases like H S
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methyl Triphenyl Phosphonium Iodide w The integrity of these pipelines is of and CO . Amine treatment and poly- gases, which corrode internal metallic
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Phenyl Trimethyl Ammonium Chloride Contact: SAMIR CHEMICALS Liq. Ammonia 910 utmost importance, as a rupture or leak meric membrane treatment are the most surfaces causing microbial corrosion.
Flat No. 2, Kamala Terrace, Subhash Road,
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Tetra-Phenyl Phosphonium Bromide Opp. United Ink, Vile Parle (East), Mumbai 400 057. Calcium Chloride (All Grades) could have dire consequences to the popular cleaning processes. Later, ele-
Please contact:
PYRIDINIUM SALTS Tel.: 022-26169022 / 26117772 SIMA CHEMICALS environment, humanity and production mental sulphur is removed by the Claus Fire and explosion hazard prevention
SIMA CHEMICALS
Butylated Hydroxy Toluene Fax: 91-22-26169022 * mobile: 9820131245 Factory: W-13, M.I.D.C. Chemical Zone, Ambernath 421 501. loss. Corrosion is one the major factors process. Moisture removal is done in gas pipelines
Cetyl Pyridinium Chloride Email: samir835@hotmail.com / Tel.: 0251- 2610566 / 6552428 * Fax: 0251-2209243 that can cause catastrophic pipeline using triethylene glycol. Gas leaks, oxygen and the pre-
drshah@samirchem.com
Lauryl Pyridinium Chloride / Bromide Website: www.samirchem.com (AD-1) mob.: 9821136312 / 9321375313 / 9321375314 (AD-2) failure(1). sence of an ignition source are essential
Email: sheetal@simachemicals.com
Factors affecting the internal surfaces conditions of fi re and explosion. Older
The use of anti-corrosion coatings, of gas pipelines
For Your Requirement Acetic Anhydride along with cathodic protection and the An electrochemical reaction lead- gas pipes are at a greater risk due to
gas leaks at the site of internal corro-
SODIUM BI SULPHITE LR/AR/Ultra Pure continuous monitoring of pipelines, can ing to internal corrosion in gas pipe- sion. Another possible cause of leaks
strengthen corrective and preventive lines can take place when the internal is pipeline damage due to unautho-
SODIUM META BI SULPHITE Tanker Load, Carboy measures. In this article, the author has surface is exposed to moisture, forming rized digging, or natural disasters like a
and Lab Pack treated internal corrosion problems, the electrolytes along with contaminants landslide or earthquake. The sources of
SODIUM SULPHITE fi re and safety aspects, different pre- such as chlorides, CO , sulphur com- ignition include:
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ventive and monitoring measures, etc., pounds and oxygen. Stray electricity  Friction during grinding and chip-

(95% Minimum) (9 PH Minimum) for gas and crude oil pipelines sepa- due to nearby electric cables can also ping, causing spark generation;
(Photographic Grade) rately(2). cause or aggravate the corrosive reac-  Gas cutting or welding;
Manufacturers of tions and cause corrosive pit formation  Open flames, such as candles or

Laboratory Fine Chemicals Gas pipelines on internal surfaces. lanterns;
 Electric arc while turning a switch
For Acetic Anhydride: The severity of the corrosion dam- on or off; and
aa@pallavchemicals.com / 9820342624 Most gas pipelines are used for
Plot No. C - 1/412/1, Phase - II, G.I.D.C., Vatva, Ahmedabad - 382 445. transporting and distributing natural age of a gas pipeline depends on:  Static electric charge.
Contact : Shreeram Rajpurohit - 9824044900 / 9898384848 For Lab Chemicals: gas from gas fi elds to consumer instal-  Concentration of individual con-
Preetam Purohit - 8849754624 KNS ADS sales@pallavchemicals.com / 9136093115 lations and homes. This gas is extracted taminants; Gas distributors adopt different
E-mail : arihantchemicals22@yahoo.co.in Web.: www.pallavchemicals.com from rocky reserves occurring deep  Certain dangerous combinations of types of preventive and corrective

beneath the surface of the Earth. The these corrosive contaminants; measures for safety and fi re prevention

More than a Source OUR PRODUCTS main constituents of natural gas are  Gas velocity and pressure levels; for gas pipelines, including:
hydrocarbons such as methane, ethane,  Temperature of the gas; and
Fire prevention at the design and


fINE / OrGANIC ChEMICAlS: CAS NO. propane, butane and pentane(3).  Gas leakage as well as seepage of layout stages by complying with the
S Para Cresyl Methyl Ether (4-Methoxytoluene) 104-93-8 moisture and air from pipe joints latest global standards;
S Para Anisic Aldehyde (4-Methoxy Benzaldehyde) 123-11-5 Contaminants in natural gas in- due to low pressure in pipelines  Automatic supervisory control and

S Para Anisic Alcohol (4-Methoxybenzyl Alcohol) 105-13-5 clude oxygen, chlorides, carbon di- whenever gas supply is stopped. data acquisition (SCADA) control
S Para Anisyl Acetone (Anisyl Acetone) 104-20-1 oxide (CO ), hydrogen sulphide (H S), of critical gas fl ow and other oper-
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S Para Methoxy Phenyl Acetone (4-Methoxy Phenyl Acetone) 122-84-9 water vapour, sulphur dioxide (SO ), The temperature and velocity of ating parameters;
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AGrO ChEMICAlS: carbonyl sulphide (COS), carbon di- natural gas play a decisive role in caus-  Gas leak and smoke detection systems;
An ISO 9001-2008 Certifi ed Company S Meta Phenoxy Benzyl Alcohol (3-Phenoxy Benzyl Alcohol) 13286-35-2 sulphide (CS ), sulphur trioxide (SO ) ing the chemical and electrochemical  Heat and fi re detection systems;

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Admin. Office: 107, Abba residency, S Propanil 709-98-8 and mercaptans. Sulphur compounds reactions that result in corrosion. How-  Corrosion detection and pipe wall
C.H./S., Opp. Jogeshwari Railway Station, phArMA INTErMEdIATE: are highly corrosive to metals and some ever, even some of the microorganisms thickness monitoring;
non-metals. For example, H S attacks colonizing the wall of a gas pipe have  Automatic water sprays and other
Jogeshwari (West), Mumbai 400 102. (India) S 2-Mercapto Benzimidazole 583-39-1 most metallic pipelines as well as some been found to be the causative factors in fi refi ghting equipment and systems;
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Tel.: 0091-22-26795968 / 26795969 / S 5-Methoxy-2-Mercapto Benzimidazole 37052-78-1 plastic pipes. The minimization of many cases. Bacterial activity, which is  Multi-level emergency plans, eva-

Email: yakub@nandoliachemicals.com S 5-Difluoro Methoxy-2-Mercapto Benzimidazole 97963-62-7 impurities can reduce the rate of corrosion fed by hydrocarbon nutrients and mois- cuation plans and compliance with
Web.: www.nandoliachemicals.com INOrGANIC ChEMICAlS: damage of pipelines. ture, produces organic acids and acidic EHS regulatory requirements; and
S Manganese Sulphate Monohydrate 10034-96-5
27/20
Chemical Weekly December 12, 2023 187
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