{"id":4978,"date":"2022-02-23T11:06:14","date_gmt":"2022-02-23T11:06:14","guid":{"rendered":"https:\/\/riverdelta.in\/cl\/?page_id=4978"},"modified":"2022-04-07T07:53:35","modified_gmt":"2022-04-07T07:53:35","slug":"stepping-up-with-esp-success","status":"publish","type":"page","link":"https:\/\/riverdelta.in\/cl\/stepping-up-with-esp-success\/","title":{"rendered":"Stepping-up with ESP success"},"content":{"rendered":"\t\t
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Stepping-up with ESP success<\/strong><\/p>

Introduction:<\/strong><\/p>

A reputed client located in Gujarat, has an existing ESP of Flakt make commissioned in the year 1993. The ESP was installed for clinker cooler application and was designed for achieving an outlet emission of \u2264 100 mg\/Nm3<\/sup>.\u00a0 With the stringent emission norms introduced by the Central Pollution Control Board (CPCB), the client approached Clair to retrofit the ESP for achieving an outlet emission of \u2264 25 mg\/Nm3<\/sup> in the year 2007. The existing ESP is a 3 field ESP designed for a gas volume of 4,80,000 m3<\/sup>\/h (Table 1). Client suggested to add an additional field (4th<\/sup> field) to achieve the outlet emission of \u2264 25 mg\/Nm3<\/sup>.<\/p>

Data\/ Table:<\/strong><\/p>

Table 1: Existing ESP Parameters<\/p>

Sl. No.<\/strong><\/p><\/td>

Description<\/strong><\/p><\/td>

Unit<\/strong><\/p><\/td>

Value<\/strong><\/p><\/td><\/tr>

1<\/p><\/td>

Gas Volume<\/p><\/td>

Nm3<\/sup>\/hr<\/p><\/td>

4,80,000<\/p><\/td><\/tr>

2<\/p><\/td>

Operating Temperature<\/p><\/td>

0<\/sup>C<\/p><\/td>

280<\/p><\/td><\/tr>

3<\/p><\/td>

Inlet dust load<\/p><\/td>

gm\/Nm3<\/sup><\/p><\/td>

41<\/p><\/td><\/tr>

4<\/p><\/td>

Gas velocity<\/p><\/td>

m\/s<\/p><\/td>

0.79<\/p><\/td><\/tr>

5<\/p><\/td>

Collecting plate height<\/p><\/td>

m<\/p><\/td>

14<\/p><\/td><\/tr>

6<\/p><\/td>

No. of gas passages<\/p><\/td>

No.<\/p><\/td>

30<\/p><\/td><\/tr>

7<\/p><\/td>

Specific collection area (SCA)<\/p><\/td>

m2<\/sup>\/m3<\/sup>\/s<\/p><\/td>

70.9<\/p><\/td><\/tr>

8<\/p><\/td>

Outlet dust load<\/p><\/td>

mg\/Nm3<\/sup><\/p><\/td>

\u2264 100<\/p><\/td><\/tr><\/tbody><\/table>

Table 2: Retrofit ESP Parameters<\/p>

Sl. No.<\/strong><\/p><\/td>

Description<\/strong><\/p><\/td>

Unit<\/strong><\/p><\/td>

Value<\/strong><\/p><\/td><\/tr>

1<\/p><\/td>

Gas Volume<\/p><\/td>

Nm3<\/sup>\/hr<\/p><\/td>

3,80,000<\/p><\/td><\/tr>

2<\/p><\/td>

Operating Temperature<\/p><\/td>

0<\/sup>C<\/p><\/td>

160<\/p><\/td><\/tr>

3<\/p><\/td>

Inlet dust load<\/p><\/td>

gm\/Nm3<\/sup><\/p><\/td>

41<\/p><\/td><\/tr>

4<\/p><\/td>

Gas velocity<\/p><\/td>

m\/s<\/p><\/td>

0.63<\/p><\/td><\/tr>

5<\/p><\/td>

Collecting plate height<\/p><\/td>

m<\/p><\/td>

14<\/p><\/td><\/tr>

6<\/p><\/td>

No. of gas passages<\/p><\/td>

No.<\/p><\/td>

30<\/p><\/td><\/tr>

7<\/p><\/td>

Specific collection area (SCA)<\/p><\/td>

m2<\/sup>\/m3<\/sup>\/s<\/p><\/td>

89.5<\/p><\/td><\/tr>

8<\/p><\/td>

Outlet dust load<\/p><\/td>

mg\/Nm3<\/sup><\/p><\/td>

\u2264 25<\/p><\/td><\/tr><\/tbody><\/table>

Observations:<\/strong><\/p>

The client also had plans to install a Waste heat recovery (WHR) system before the ESP to utilize the available heat. Based on the installation of WHRS, the new gas volume would be 3,80,000 m3<\/sup>\/h at temperature of 160 0<\/sup>C. Based on the new information made available and inspection done on the existing ESP, Clair set out to retrofit the ESP for achieving an outlet emission of \u2264 25 mg\/Nm3<\/sup>.<\/p>

Clair took up the challenge to retrofit the ESP to achieve the requested outlet emission. The first approach was to inspect the existing ESP and determine the healthiness of the equipment. Based on inspection, following steps were taken:<\/p>