مجموعة تكنولاب البهاء جروب

تحاليل وتنقية ومعالجة المياه
 
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تنظيف وتطهير وغسيل واعادة تاهيل الخزانات


معمل تكنولاب البهاء جروب
 للتحاليل الكيميائية والطبية
والتشخيص بالنظائر المشعة
 للمخدرات والهرمونات والسموم
 وتحاليل المياه

مجموعة
تكنولاب البهاء جروب
لتصميم محطات الصرف الصناعى والصحى
لمعالجة مياه الصرف الصناعى والصحى
مجموعة تكنولاب البهاء جروب
المكتب الاستشارى العلمى
دراسات علمية كيميائية



معالجة الغلايات وانظمة البخار المكثف
معالجة ابراج التبريد المفتوحة
معالجة الشيللرات
مجموعة تكنولاب البهاء جروب
اسنشاريين
كيميائيين/طبيين/بكترولوجيين
عقيد دكتور
بهاء بدر الدين محمود
رئيس مجلس الادارة
استشاريون متخصصون فى مجال تحاليل وتنقية ومعالجة المياه
متخصصون فى تصنيع وتصميم كيماويات
معالجة الصرف الصناعى والصحى
حسب كل مشكلة كل على حدة
تصنيع وتحضير كيماويات معالجة المياه الصناعية
مؤتمرات/اجتماعات/محاضرات/فريق عمل متميز
صور من وحدات معالجة المياه


technolab el-bahaa group
TECHNOLAB EL-BAHAA GROUP
EGYPT
FOR
WATER
TREATMENT/PURIFICATION/ANALYSIS
CONSULTANTS
CHEMIST/PHYSICS/MICROBIOLIGIST
 
INDUSTRIAL WATER
WASTE WATER
DRINKING WATER
TANKS CLEANING
 
CHAIRMAN
COLONEL.DR
BAHAA BADR EL-DIN
0117156569
0129834104
0163793775
0174041455

 

 

 

تصميم وانشاء محطات صرف صناعى/waste water treatment plant design

technolab el-bahaa group
egypt
We are a consultants in water treatment with our chemicals as:-
Boiler water treatment chemicals
Condensated steam treatment chemicals
Oxygen scavenger treatment chemicals
Ph-adjustment treatment chemicals
Antiscale treatment chemicals
Anticorrosion treatment chemicals
Open cooling tower treatment chemicals
Chillers treatment chemicals
Waste water treatment chemicals
Drinking water purification chemicals
Swimming pool treatment chemicals
Fuel oil improver(mazote/solar/benzene)
technolab el-bahaa group
egypt
We are consultants in extraction ,analysis and trading the raw materials of mines as:-
Rock phosphate
32%-30%-28%-25%
Kaolin
Quartez-silica
Talcum
Feldspae(potash-sodumic)
Silica sand
Silica fume
Iron oxid ore
Manganese oxid
Cement(42.5%-32.5%)
Ferro manganese
Ferro manganese high carbon

 

water treatment unit design


 

وكلاء لشركات تركية وصينية لتوريد وتركيب وصيانة الغلايات وملحقاتها
solo agent for turkish and chinese companies for boiler production/manufacture/maintance

 

وكلاء لشركات تركية وصينية واوروبية لتصنيع وتركيب وصيانة ابراج التبريد المفتوحة

 

تصميم وتوريد وتركيب الشيللرات
design/production/maintance
chillers
ابراج التبريد المفتوحة
مجموعة تكنولاب البهاء جروب
المكتب الاستشارى العلمى
قطاع توريد خطوط انتاج المصانع
 
نحن طريقك لاختيار افضل خطوط الانتاج لمصنعكم
سابقة خبرتنا فى اختيار خطوط الانتاج لعملاؤنا
 
1)خطوط انتاج العصائر الطبيعية والمحفوظة والمربات
2)خطوط انتاج الزيوت الطبيعية والمحفوظة
3)خطوط انتاج اللبن الطبيعى والمحفوظ والمبستر والمجفف والبودرة
4)خطوط تعليب وتغليف الفاكهة والخضروات
5)خطوط انتاج المواسير البلاستيك والبى فى سى والبولى ايثيلين
6)خطوط انتاج التراى كالسيوم فوسفات والحبر الاسود
7)خطوط انتاج الاسفلت بانواعه
Coolمحطات معالجة الصرف الصناعى والصحى بالطرق البيولوجية والكيميائية
9)محطات معالجة وتنقية مياه الشرب
10)محطات ازالة ملوحة البحار لاستخدامها فى الشرب والرى
11)الغلايات وخطوط انتاج البخار الساخن المكثف
12)الشيللرات وابراج التبريد المفتوحة وخطوط انتاج البخار البارد المكثف
 
للاستعلام
مجموعة تكنولاب البهاء جروب
0117156569
0129834104
0163793775
 
القاهرة-شارع صلاح سالم-عمارات العبور-عمارة 17 ب
فلا تر رملية/كربونية/زلطيه/حديدية

وحدات سوفتنر لازالة عسر المياه

مواصفات مياه الشرب
Drinking water
acceptable
values

50

colour

acceptable

Taste

nil

Odour

6.5-9.2

ph

 

1 mg/dl

pb

5 mg/dl

as

50 mg/dl

cn

10 mg/dl

cd

0-100mg/dl

hg

8 mg/dl

f

45 mg/dl

N02

1 mg/dl

Fe

5 mg/dl

Mn

5.1 mg/dl

Cu

200 mg/dl

Ca

150 mg/dl

Mg

600 mg/dl

Cl

400 mg/dl

S04

200 mg/dl

Phenol

15 mg/dl

zn

 

 

الحدود المسموح به
ا لملوثات الصرف الصناعى
 بعد المعالجة
Acceptable
values
treated wate water
7-9.5

ph

25-37 c

Temp

40 mg/dl

Suspended solid

35 mg/dl

bod

3 mg/dl

Oil & grase

0.1 mg/dl

hg

0.02 mg/dl

cd

0.1 mg/dl

cn

0.5mg/dl

phenol

1.5 ds/m

conductivity

200 mg/dl

na

120 mg/dl

ca

56 mg/dl

mg

30 mg/dl

k

200 mg/dl

cl

150 mg/dl

S02

0.75 mg/dl

Fe

0.2 mg/dl

Zn

0.5 mg/dl

Cu

0.03 mg/dl

Ni

0.09 mg/dl

Cr

0.53 mg/dl

لb

0.15 mg/dl

pb

 





pipe flocculator+daf
plug flow flocculator
lamella settels

محطات تحلية مياه البحر بطريقة التقطير الومضى على مراحل
MSF+3.jpg (image)
محطات التقطير الومضى لتحلية مياه البحر2[MSF+3.jpg]
some of types of tanks we services
انواع الخزانات التى يتم تنظيفها
ASME Specification Tanks
Fuel Tanks
Storage Tanks
Custom Tanks
Plastic Tanks
Tank Cleaning Equipment
Double Wall Tanks
Septic Tanks
Water Storage Tanks
Fiberglass Reinforced Plastic Tanks
Stainless Steel Tanks
Custom / Septic
مراحل المعالجة الاولية والثانوية والمتقدمة للصرف الصناعى

صور مختلفة
من وحدات وخزانات معالجة الصرف الصناعى
 التى تم تصميمها وتركيبها من قبل المجموعة

صور
 من خزانات الترسيب الكيميائى والفيزيائى
 لوحدات معالجة الصرف الصناعى
المصممة من قبل المحموعة



technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group

technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group


technolab el-bahaa group




مياه رادياتير اخضر اللون
بريستول تو ايه
انتاج شركة بريستول تو ايه - دمياط الجديدة
مجموعة تكنولاب البهاء جروب

اسطمبات عبوات منتجات شركة بريستول تو ايه-دمياط الجديدة

مياه رادياتير خضراء فوسفورية

من انتاج شركة بريستول تو ايه 

بترخيص من مجموعة تكنولاب البهاء جروب


زيت فرامل وباكم

DOT3



شاطر | 
 

 Cleaning Tubes in Boilers, Chillers & Heat Exchangers/كيفية غسيل انابيب الغلايات والشيللرات والمبادلات الحرارية

استعرض الموضوع السابق استعرض الموضوع التالي اذهب الى الأسفل 
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عدد المساهمات : 3443
تاريخ التسجيل : 15/09/2009
العمر : 49
الموقع : مصر

مُساهمةموضوع: Cleaning Tubes in Boilers, Chillers & Heat Exchangers/كيفية غسيل انابيب الغلايات والشيللرات والمبادلات الحرارية   السبت فبراير 25, 2012 1:04 am

CLEANING TUBES IN BOILERS, CHILLERS & HEAT EXCHANGERS

by

general.dr
bahaa badr

technolab el-bahaa group


In firetube boilers, hot combustion gasses pass through the tubes depositing soot and scale on the tube walls.

Heat transfer properties of the tubes are reduced as this layer of deposit builds up and the boiler must work harder to provide the required heat.

This causes undue wear on motors, blowers and controls, resulting in higher operating costs and increased fuel consumption.

Regular cleaning of the fireside surfaces yields big payoffs in lower operating costs and fuel savings. No matter what fuel is burned, firetubes have to be cleaned.

Various methods have been employed over the years for cleaning boiler firetubes. Firetubes were traditionally cleaned manually using a brush mounted on a long rod which was manually pushed through the tubes - a dirty, labor intensive job.

In some cases, firetubes were washed out with a fire hose, creating a huge mess.

In many cases, nowadays, these methods prove to be impractical and ineffective, taking too much time and labor.

Semi automatic equipment has been developed which speeds up cleaning operations and does not create the mess associated with firetube cleaning.

One such device mechanically drives a stiff brush or scraper through the tube while a powerful vacuum simultaneously collects the soot and scale. Because the job is easy, tube cleaning can be performed more often, resulting in much lower operating costs.

In some firetube boilers, such as waste heat and process boilers, scale build up occurs which a simple in-out brushing action cannot effectively clean.

A rotary cleaning action is required to remove the scale deposit.

One approach is the use of a rotary flexible shaft machine which spins a cleaning tool through the tube while a vacuum collects the loosened deposits at the same time.

Many operators find this equipment much easier to use than turbine motors or a drill with a rod attached.

In watertube boilers, water traveling through the tubes is heated to very high temperatures causing the solids in the water to settle onto the tube surfaces. Scaling is a common problem in watertube boilers.

One cannot rely on water treatment alone to prevent scale build up. Just as is the case with firetube boilers, scale in watertubes leads to the same higher costs. Again, regular cleaning of the tubes pays dividends.

Traditional watertube cleaning equipment consisted of an air or water driven turbine motor attached to the end of a hose with a cutter head mounted on the front of the turbine.

This equipment proved awkward to use, somewhat expensive and difficult to maintain. The same rotary flexible shaft approach used in firetube boiler cleaning can be employed with watertubes.

Air powered machines of this type are in use for this application and users find it easier to handle, more powerful and less costly.

HOW DEPOSITS ON BOILER TUBES AFFECT HEAT TRANSFER

Soot Build Up
1/32"
1/16"
1/8"

Heat Loss
12%
24%
47%

Increased Fuel Consumption
2 1/2%
4 1/2%
8 1/2%

Scale Build Up
1/32"
1/16"
1/8"

Heat Loss
8%
12%
20%

Increased Fuel Consumption
2%
2 1/2%
4%


Fouled tubes in water cooled chillers cause the chiller to consume more energy to achieve the desired cooling output.

Regular chiller tube cleaning will lower operating costs and extend equipment life.

A clean chiller cycles less often, thereby reducing the load on motors, pumps and bearings.

Although helpful, water treatment will not prevent the need to clean the tubes.
A popular tube cleaning method in the past was cleaning with chemicals.

This was done by circulating a cleaning chemical, often an acid, through the chiller to clean the tubes.

In recent years, this method has fallen out of favor for many operators due to excessive cost, safety concerns and disposal problems.

Rod and brush cleaning was widely used in the past, as well. Labor intensive and
unpleasant, this job was generally put off until tube cleaning was absolutely essential.

This is a two step tube cleaning method whereby the operator first manually brushes out the tubes, then follows with a flushing of the tubes with a water hose.

Often, the residue left in the chiller tube after brushing would dry back onto the tube wall before being flushed. All that work and the tubes were still dirty.

A major advancement in chiller tube cleaning came with the development of the rotary flexible shaft type systems which are widely used today.

These systems combine the brushing step with the water flushing step into one operation.

Because the cleaning tool is rotating and water is continuously being delivered right behind the cleaning tool, tubes are left thoroughly cleaned in a fraction of the time. More of these systems are in use worldwide today than any other.

It is extremely important with these systems that the torque output of the drive unit does not exceed the torque capacity of the flexible shaft.

Research has shown that 1/2 to 3/4 HP at 862.5 to 1750 RPM produces an output torque that is suitable for shafts used in tubes up to 1" ID. 1 to 2 HP is suitable for tubes larger than 1" ID.

When cleaning speed is essential, and the chiller tubes do not require any scrubbing action to achieve the desired results, another cleaning method exists.

It involves shooting a cleaning tool through the tube at high speed using a blast of water and pressurized air.

This is by far the fastest way to clean chiller tubes available today.

When speed is important but the tubes do need scrubbing, there is a newly developed flexible shaft system that mechanically feeds the shaft and rotating brush through the tubes at high speed.

This system is a significant improvement over manual feeding of the shaft.

HOW FOULING FACTORS AFFECT CHILLER PERFORMANCE

Fouling Factor
.0005
.0015
.0025
.0036
.0045

% of Efficiency
100%
94%
80%
58%
36%

Money Wasted
$0
$3,920
$7,840
$11,760
$16,520

Additional Power Req
0%
11%
22%
33%
44%


Process heat exchangers have long been a maintenance nightmare when it comes to tube cleaning. Process heat exchangers tend to be operated to the point of near failure because they are needed to produce a product.

Heat exchanger downtime means lost production and lost revenues. It is not at all uncommon for the tubes in these units to become solidly plugged with deposits.

In some cases, conventional tube cleaners are sufficient to clean process heat exchangers, but often times they are not. When this is the case, the tubes have to be cleaned using one of three mechanical methods.

Long popular in the past, and still used today, is hydroblasting. Usually performed by a maintenance contractor, hydroblasting uses water pressurized to 10,000 to 25,000 PSI to blast the deposits out of the tubes.

The equipment is costly and requires some expertise to operate. Many shy away from this approach due to concerns about safety.

The other two methods involve mechanically drilling out the tubes. One way to do this is to establish a tube drilling station on site.

This approach will necessitate removing the tube bundles from the shells and transporting them to the drilling station.

The tube bundle is then mounted on a rack and the tubes are automatically drilled out using carbide tipped drills and flushing with water simultaneously.

Once cleaned, the tube bundle is then transported back to the shell and reinstalled. While effective, these drilling machines require extended down time and are quite expensive.

Another way to drill tubes is the use of a hand held, air powered drilling gun. These guns are used to drive sectional hollow shafts with carbide tipped drills on the end.

They allow for drilling tubes from 1" to 2" OD up to 21' long without the need to remove the tube bundle.

A smaller version is available to clean small heat exchangers with tubes from 3/16" to 1" ID up to 8' long.

CONCLUSION

Tube cleaning is a simple way to lower costs and prolong equipment life. It is an important and cost effective element to any maintenance program, and should not be neglected.

The tube cleaning equipment available today can streamline cleaning operations, reduce labor, and improve operating efficiency.
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Cleaning Tubes in Boilers, Chillers & Heat Exchangers/كيفية غسيل انابيب الغلايات والشيللرات والمبادلات الحرارية
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