TUBULAR OZONIZER

1,210,614. Producing ozone. KNAPSACK A.G. 24 March, 1969 [2 April, 1968], No. 15314/69. Heading H5H. A tubular ozonizer including an oxygen chamber 1, an ozone chamber 2, an electrical discharge chamber 3 and a coolant chamber 4, with chamber 3 bounded by two spaced coaxial metal tube electrodes 5, 6, having a dielectric tube 9 arranged therebetween to form two discharge spaces 7 and 8, is characterized by the tube 9 being heated radially spaced from a bore 10 in the partition plate 11 disposed between oxygen and ozone chambers 1 and 2 and the annular gap so formed between tube 9 and wall 12 of the bore 10 receiving a packing ring 13 which has a centring ring 14 mounted thereon to provide support for the upper flanged edge 15 of the inner electrode 5. An electrically conducting pressure spring 20 is provided between the ozonizer head 19 and the flanged edge 15 to hold electrode 5 in place and supply electrical power thereto. The coolant chamber 4 is earthed at 22 and a porcelain member 23 separates head 19 and chamber 4. The lower end of electrode 6 is formed with means (not shown) for centring tube 9. The upper edge of centring ring 14 has slit-shaped gas passageways 18 and a wedge-shaped cross-sectional area corresponding to the inclination of the bore wall 12 in plate 11. Tube 9 touches the bottom of electrode 6 and has gas passageways 17 in its lower end. Two or more tubular ozonizer systems have common chambers 1, 2 and 4, and are in parallel as regards gas flow. Oxygen or oxygen-enriched gas flows via inlet 24, passageways 18, discharge space 8, passageways 17 and discharge space 7, and leaves outlet 25 as ozone or an oxygen/ozone mixture. Cooling water circulates in container 4 to remove heat set free during the discharge. Specification 1,034,509 is referred to.