What are the desulfurization processes?
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This post was last edited by adsl121 on 2009-12-24 00:28. What are the various desulfurization processes available? (Chemical product recovery) This post was last edited by Langtaosha on 2008-3-30 22:06
This post was last edited by adsl121 on 2009-12-24 00:29. Learn*search, http://bbs.hcbbs.com/viewthread.php?tid=35901&extra=page%3D3%26amp%3Bfilter%3Dtype%26amp%3Btypeid%3D6
This post was last edited by adsl121 on 2009-12-24 00:29 regarding the ADA wet flue gas desulfurization process.
This post was last edited by adsl121 on 2009-12-24 00:30. Desulfurization processes can be mainly divided into two categories: 1. Dry desulfurization, 2. Wet desulfurization. The main agents used for dry desulfurization are iron oxide and activated carbon. Wet desulfurization methods include alkaline methods (the 888 method, tannin + vanadium pentoxide, salicylic acid + hydroquinone), as well as ammonia-based desulfurization
This post was last edited by adsl121 on 2009-12-24 00:30. The main desulfurization processes (primary desulfurization) are as follows:
1. Methods and types of desulfurization:
Wet oxidation methods include:
1. Modified ADA method
2. Gum and KCA method
3. MSQ and MQ methods
4. Naihui method
5. Oxidized coal method
6. Modified hydroquinone method
1. EATA iron complexation method
2. FD method
3. Organic phosphorus iron complexation method
4. HEDP-NTA iron complexation method
5. CN iron complexation method
1. Ammonia aqueous phase catalysis method
2. Naphthoquinone method
3. Phenanthroquinone method
4. ADA method
5. WCE method
1. 888 method
2. PDS method
1. DDS method
2. Iron-ammonia method
3. Ammonia picric acid method
Physical methods include:
1. Water washing method
2. Acrylate carbonate method
3. Low-temperature methanol method
4. Polyethylene glycol dimethyl ether method
5. Tributyl phosphate method
6. N-methylpyrrolidone method
7. N-methylε-caprolactam method
Small and medium-sized ammonia plants must carry out desulfurization of the conversion gas in the following situations: 1. Plants that use a full low-temperature shift process. 2. Manufacturers that use high-sulfur coal as raw material. 3. Manufacturers that have installed decarburization equipment and produce products such as urea and methanol (or dimethyl ether). The secondary desulfurization processes used by most manufacturers consist of: 1. Wet desulfurization (tannin + PDS, tannin + 888, DDS, PDS, 888, and other titanium-chromium-based desulfurizing agents) + dry desulfurization (activated carbon, iron oxide, zinc oxide). :lol :handshake 2. Wet flue gas desulfurization. 3. Dry desulfurization. Regardless of the method used for secondary desulfurization, the goal is to ensure that the H2S level at the outlet is as low as possible. This post was last edited by 7276166 on 2008-3-29 17:17.]
1. Methods and types of desulfurization:
Wet oxidation methods include:
1. Modified ADA method
2. Gum and KCA method
3. MSQ and MQ methods
4. Naihui method
5. Oxidized coal method
6. Modified hydroquinone method
1. EATA iron complexation method
2. FD method
3. Organic phosphorus iron complexation method
4. HEDP-NTA iron complexation method
5. CN iron complexation method
1. Ammonia aqueous phase catalysis method
2. Naphthoquinone method
3. Phenanthroquinone method
4. ADA method
5. WCE method
1. 888 method
2. PDS method
1. DDS method
2. Iron-ammonia method
3. Ammonia picric acid method
Physical methods include:
1. Water washing method
2. Acrylate carbonate method
3. Low-temperature methanol method
4. Polyethylene glycol dimethyl ether method
5. Tributyl phosphate method
6. N-methylpyrrolidone method
7. N-methylε-caprolactam method
Small and medium-sized ammonia plants must carry out desulfurization of the conversion gas in the following situations: 1. Plants that use a full low-temperature shift process. 2. Manufacturers that use high-sulfur coal as raw material. 3. Manufacturers that have installed decarburization equipment and produce products such as urea and methanol (or dimethyl ether). The secondary desulfurization processes used by most manufacturers consist of: 1. Wet desulfurization (tannin + PDS, tannin + 888, DDS, PDS, 888, and other titanium-chromium-based desulfurizing agents) + dry desulfurization (activated carbon, iron oxide, zinc oxide). :lol :handshake 2. Wet flue gas desulfurization. 3. Dry desulfurization. Regardless of the method used for secondary desulfurization, the goal is to ensure that the H2S level at the outlet is as low as possible. This post was last edited by 7276166 on 2008-3-29 17:17.]
This post was last edited by adsl121 on 2009-12-24 00:30. Power wave washing seems to be quite popular these days
This post was last edited by adsl121 on 2009-12-24 00:31. The coking plants currently use a large amount of HPF and vacuum carbonates
This post was last edited by adsl121 on 2009-12-24 00:31. There are dry and wet desulfurization methods. Among them, the dry methods are further divided into oxidation and adsorption methods ； The wet method also includes adsorption and oxidation methods.
This post was last edited by adsl121 on 2009-12-24 00:31. The vacuum carbonate method is used quite often
This post was last edited by adsl121 on 2009-12-24 00:32. Haha, there are so many ways of desulfurization; the main ones are wet methods such as the lime-gypsum process, while a small portion involve dry or semi-dry methods
This post was last edited by adsl121 on 2009-12-24 00:32: Dry and Wet methods