Chloride Ingress In Marine Boiler - tobo boiler

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θrion Gas Fired Steam Boiler

Capacity:1-20t/h

Rated thermal efficiency: 100-104%

Fixed working pressure: ≤1.6MPa

Applicable fuel:natural gas etc.

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Gas(oil) Fired Integrated Hot Water Boiler

Capacity:0.7-14MW

Rated thermal efficiency:96-98%

Fixed working pressure:≤1.25MPa

Applicable fuel:Natural gas, light oil, etc.

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H6 Gas Fired Hot Water Boiler

Capacity:0.7-2.8Mw

Rated thermal efficiency: 97.2-106%

Fixed working pressure:0.1MPa

Applicable fuel:Natural gas, etc.

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T7 Vacuum Hot Water Boilerr

Capacity:2.8-7.0Mw

Rated thermal efficiency:≥105.5%

Fixed working pressure:-0.02MPa

Applicable fuel:Natural gas, etc.

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HOT

V6 Gas Fired Hot Water Boiler

Capacity:99Kw

Rated thermal efficiency:97.2-104.4%

Fixed working pressure:1.0MPa

Applicable fuel:Natural gas, etc.

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HOT

Electric Steam Boiler

Capacity:0.5-4.0 t/h

Rated thermal efficiency:98%

Fixed working pressure:≤1.25MPa

Applicable fuel:electric energy

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    NOTE 9. Chloride attack. In high pressure, highly rated water tube boilers, the ingress of chloride ions can constitute a hazard. The chloride ions can penetrate deposits and hydrolyze to form hydrochloric acid, which will then attack the tube metal. In severe cases the hydrogen formed in this corrosion process diffuses into the metal.Get Price

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    Chloride content: Chloride content determines the level of chloride salt in the boiler water, which may be due to ingress of seawater or impure water (shore water). Chloride ions, unlike other ions that enter the boiler, are extremely soluble and do not precipitate or decompose when subjected to boiler conditions.Get Price

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    Oct 13, 2015 · For fire tube boiler out of service for short period. The boiler must be completely filled with alkaline water. The boiler must be topped up periodically and any air in the system must be got rid off. Regularly test the boiler water and keep the alkalinity in the range of recommended value. If the boiler is to be taken out of service for long Get Price

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    Testing Alkalinity In Boiler Water. Alkalinity is a key control parameter for boilers (outside of the prescribed operating range, it can lead to corrosion, caustic metal embrittlement, and carryover) and cooling water systems (where it has a significant effect on chemical treatments for scale and corrosion inhibition).Get Price

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    Hydrogen embrittlement of mild steel boiler tubing occurs in high-pressure boilers when atomic hydrogen forms at the boiler tube surface as a result of corrosion. Hydrogen permeates the tube metal, where it can react with iron carbides to form methane gas, or with other hydrogen atoms to form hydrogen gas.Get Price

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    Feb 20, 2019 · Boiler water tests (explain chloride test ) Why phosphate test is done. Lube oil tests. What is your action if intercooler tube is leaking. What is your action if lube oil temperature is increasing. What is your action if u find oil in d hot well. What to do if chloride content in d boiler is high. How much should be the chloride content.Get Price

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    Jan 05, 2022 · The test samples were samples cut from boiler tubes, and had an area of 3.2 cm 2. The chemical environment was introduced into the electric furnace, which recreated a superheater tube furnace with a temperature range of 400–550 °C. The gas environment was formed by a stream of O 2, CO 2, H 2 O, HCl, SO 2 and N 2 gases. The influence of Get Price

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    Answer (1 of 6): CBD - Continuous Blow Down 1. to maintain the drum level - if the drum level increases the water will ingress to the super heaters coils of the boiler. If the water enters the super heater coils the coils would get puncher or burst thus result in shutdown of boiler ( …Get Price

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    Equipment employed. Blowdown control. Boiler blowdown is the removal of water from a boiler. Its purpose is to control boiler water parameters within prescribed limits to minimize scale, corrosion, carryover, and other specific problems. Blowdown is also used to remove suspended solids present in the system.Get Price

  • Boiler Water Treatment - An overview - Marinerspoint

    Apr 29, 2020 · For water tube boiler (Z boiler): 1. Stop the firing – open up the combustion chamber, – Fill up the boiler water level to full. – leakage can seen easily be seen & identify the individually boiler water tube. For smoke tube boiler: – Stop the firing – open the smoke side drain valve, – If there is any leakage water will come out.Get Price

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    The system consists of a boiler feed water tank, also known as cascade tank or hot well, boiler feed water pump, condenser, de-aerator and feed water heater. A chemical dosing unit with a separate chemical dosing pump can be installed to automate the chemical treatment process of the marine boiler. Boiler Feed Water Tank/ Cascade Tank: Also known as hot well, it supplies …Get Price

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    Sep 03, 2020 · Magnesium Chloride (MgCl 2) Magnesium Chloride, like Magnesium Sulphate, is soluble in fresh water. In the high temperature and alkaline conditions normally maintained in a boiler, any soluble Magnesium ions in the boiler water become extremely reactive with Hydroxyl ions, which may be present in high concentrations in this type of environment.Get Price

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    Dec 14, 2003 · Encountered in Boilers w/ Demin water and most often occurs in phosphate-treated boilers where tube deposits form Caused by localized concentration of NaOH under porous boiler deposits on heat transfer surfaces The localized high pH environment continuously dissolves away the protective magnetite layer to create a broad area of wall thinning (i Get Price

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    Chloride (NaCl) as Chloride NA < 120 < 120 NA Silica (SiO2) (at pH - 9) < 350 <250 < 150 < 100 Sulphate (SO4) NA LD LD NA Besides changes in boiler water characteristics & consequently increase in boiler deposits and corrosion, condenser tube leakages contribute towards enhanced copper pick up andGet Price

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    The system consists of a boiler feed water tank, also known as cascade tank or hot well, boiler feed water pump, condenser, de-aerator and feed water heater. A chemical dosing unit with a separate chemical dosing pump can be installed to automate the chemical treatment process of the marine boiler. Boiler Feed Water Tank/ Cascade Tank: Also known as hot well, it supplies …Get Price

  • MARINE ENGINEERING KNOWLEDGE BY RAJAN - BOILER WATER TREATMENT

    For water tube boiler (Z boiler): 1. Stop the firing – open up the combustion chamber, – Fill up the boiler water level to full. – leakage can seen easily be seen & identify the individually boiler water tube. For smoke tube boiler: – Stop the firing – open the smoke side drain valve, – If there is any leakage water will come out.Get Price

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    Jul 12, 2017 · For water tube boiler (Z boiler): 1. Stop the firing – open up the combustion chamber, – Fill up the boiler water level to full. – leakage can seen easily be seen & identify the individually boiler water tube. For smoke tube boiler: – Stop the firing – open the smoke side drain valve, – If there is any leakage water will come out.Get Price

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    Jun 09, 2017 · chloride test:- is carried out to find out presence of chlorine in boiler water which can lead to corrosion. chlorine presence in boiler water means ingress of sea water in boiler water most probably from dump/vacuum condenser. test procedure:-a) p-alkalinity sample+ 2ml h2so4. b) then add 20 ml potassium chromate.Get Price

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