Device for generating a combustible gas mixture from a carbonaceous starting material with a shaft seal for rotating drives for wood gas applications
The innovative seal design with elastic rings and labyrinth gaps, combined with a lubrication system, addresses the wear and leakage issues of conventional seals in wood gasification plants, ensuring prolonged maintenance intervals and enhanced operational reliability.
DE102014016856B4Active Publication Date: 2025-08-14JOOS BERND +1
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Patent Information
- Application Number
- DE102014016856
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2014-11-14
- Publication Date
- 2025-08-14
- Estimated Expiration
- 2034-11-14
AI Technical Summary
Technical Problem
Existing shaft seals in wood gasification plants are prone to wear and leakage due to exposure to tar, dust, and abrasive particles, leading to frequent maintenance and reduced operational efficiency.
Method used
A seal design featuring elastic rings with narrow, labyrinth-like sealing gaps and a lubrication system that directs lubricant against the direction of contamination, protecting the seals from tar and dust, and a combination of split rings and sealing lips to enhance durability and tightness.
Benefits of technology
The seal achieves extended maintenance intervals of up to 20,000 hours with minimal wear, improved tightness, and effective protection against harmful substances, maintaining operational integrity in harsh wood gasification environments.
✦ Generated by Eureka AI based on patent content.
Abstract
A device for producing a combustible gas mixture from a carbon-containing starting material, in particular from lumpy wood, comprising a feed unit (10) for feeding the starting material to a reactor (19), wherein the reactor (19) comprises at least one oxidation zone (24) for oxidizing the starting material and a reduction zone (25) for reducing at least one intermediate product of the oxidation, wherein a shaft seal is provided for rotating drives, and wherein a rotating shaft (4) is sealed against a dust-, pressure-, and tar-laden atmosphere by at least one sealing bush (7), wherein the sealing bush (7) consists of at least one split ring (3) consisting of an inner ring (33) mounted on the shaft (4) in a rotationally fixed manner, which inner ring is connected via a sealing gap (34, 34a-d) directed in the axial direction to a radial outer ring (32) arranged in a housing (1) of the sealing bush (7), characterized in thatthat at least one further seal (2) is arranged in the housing (1) in the axial direction away from the split ring (3), and that an annular space (31) is arranged between the split ring (3) and the at least one further seal (2), which is filled with a lubricant (38) which can be introduced via a fluid-conducting bore (5) connected to the annular space (31) and which penetrates and lubricates the entire sealing gap (34, 34a-d).
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