china and ball clay processes including the spray drying of ceramics

Revision of the guidance …………………………………………………………………….. i

Contents……………………………………………… ii

1. Introduction ……………………………………………………………….. 1

Legal basis …………………………………………………………………………………… 1

Simplified or standard permits ……………………………………………………… 2

Who is the guidance for? ……………………………………………………….. 2

Updating the guidance …………………………………………………… 3

Consultation …………………………………………………………………… 3

Policy and procedures …………………………………………………………………. 3

2. Timetable for compliance and reviews ……………………………………………. 4

Existing processes or activities ………………………………………………. 4

Permit Reviews …………………………………………………………….. 5

3. Activity description …………………………………………………………… 6

Regulations ………………………………………………………………………….. 6

Outline of process descriptions ……………………………………………. 6

Drying and calcining of China clay ………………………………………….. 6

Ball clay……………………………………………………………….. 7

Spray drying of ceramics ……………………………………………………………….. 9

Bulk powdered material transfer ……………………………………………………. 11

4. Emission limits, monitoring and other provisions ……………….. 13

Monitoring, investigating and reporting…………………….. 16

Information required by the regulator …………………………………………….. 16

Visible Emissions ……………………………………………………………. 17

Emissions of Odour ………………………………………………………………….. 18

Abnormal Events ……………………………………………………………………….. 18

Start up and shutdown ……………………………………………………………. 19

Continuous Monitoring ………………………………………………………………. 19

Calibration and compliance monitoring…………………………………………. 20

Varying of monitoring frequency ……………………………………………………………. 22

Monitoring of unabated releases …………………………………………………. 22

Representative sampling …………………………………………………………… 23

Emissions from arrestment plant ……………………………………………… 23

Emissions from silos ……………………………………………………………….. 24

Inspection of filtration plant …………………………………………………… 24

Wet arrestment plant …………………………………………………………. 25

5. Control techniques …………………………………………………………….. 26

Summary of best available techniques …………………………………………… 26

Techniques to control emissions from contained sources …………………………. 28

Silos …………………………………………………………………………….. 28

Conveying ………………………………………………………………………… 29

Process operations …………………………………………………………. 30

Techniques to control fugitive emissions …………………………………….. 31

Loading and unloading ……………………………………………….. 32

Roadways and vehicles …………………………………………………. 32

Air Quality …………………………………………………………………. 33

Dispersion & Dilution ………………………………………………………….. 33

Ambient air quality management. …………………………………………………… 34

Stacks, vents and process exhausts …………………………………….. 34