Still kettle system for producing ardealite steam-pressing bricks

[0019] The technical solutions of the present invention are further described below in conjunction with the accompanying drawings, but the scope of protection is not limited to the description.

[0020] like figure 1 As shown, an autoclave system for producing phosphogypsum autoclaved bricks according to the present invention includes a hot total steam source header 1, an autoclave A2, an autoclave B3, an autoclave C4, an autoclave Kettle D5, autoclave E6, steam source distribution pipe 13, spent steam distribution pipe 14, steam extraction and extraction pipe A21, steam extraction and extraction pipe B31, steam extraction and extraction pipe C41, steam extraction and extraction pipe D51 and steam extraction The suction pipe E61, the total steam source header 1 is connected with the steam source distribution pipe 13 through the steam source master valve A11 and the steam source master valve B12 respectively; the autoclave A2, the autoclave B3, and the autoclave C4 , The inlets of the autoclave D5 and the autoclave E6 are respectively connected with the steam source distribution pipe 13 and the exhausted steam distribution pipe 14, and the outlets are respectively connected with the steam extraction and extraction pipe A21, the steam extraction and extraction pipe B31, and the steam extraction and extraction pipe C41 , The steam extraction pipe D51 is connected with the steam extraction pipe E61.

[0021] The inlet of the autoclave A2 is connected with the No. 1 valve C24 and the No. 1 valve E26 at the same time, and the outlet is connected with the steam extraction pipe A21 through the No. 1 valve B23; the inlet of the steam extraction pipe A21 is connected with the No. The valve B23 is connected with the No. 1 valve D25, and the outlet is connected with the spent steam distribution pipe 14 through the No. 1 valve A22.

[0022] The inlet of the autoclave B3 is connected with the No. 2 valve C34 and the No. 2 valve E36 at the same time, and the outlet is connected with the steam extraction pipe B31 through the No. 2 valve B33; the inlet of the steam extraction pipe B31 is respectively connected with the No. The valve B33 is connected to the No. 2 valve D35, and the outlet is connected to the No. 1 valve C24 and the No. 2 valve A32 through the No. 2 valve F37. The No. 1 valve C24 enters the steam inlet pipe of the autoclave A2, and the No. 2 valve A32 enters the spent steam Distribution tube 14.

[0023] The inlet of the autoclave C4 is connected with the third valve C44 and the third valve E46 at the same time, and the outlet is connected with the steam extraction pipe C41 through the third valve B43; the inlet of the steam extraction pipe C41 is respectively connected with the third valve B43. Valve B43 is connected to No. 3 valve D45, and the outlet is connected to No. 2 valve C34 and No. 3 valve A42 through No. 3 valve F47, respectively. The No. 2 valve C34 enters the steam inlet pipe of the autoclave B3, and the No. 3 valve A42 enters the spent steam. Distribution tube 14.

[0024] The inlet of the autoclave D5 is connected with the fourth valve C54 and the fourth valve E56 at the same time, and the outlet is connected with the steam extraction pipe D51 through the fourth valve B53; the inlet of the steam extraction pipe D51 is respectively connected with the fourth valve B53. Valve B53 is connected to No. 4 valve D55, the outlet is connected to No. 3 valve C44 and No. 4 valve A52 respectively through No. 4 valve F57, and No. 3 valve C44 enters the steam inlet pipe of autoclave C4, and No. 4 valve A52 enters the spent steam Distribution tube 14.

[0025] The inlet of the autoclave E6 is connected with the fifth valve C64 and the fifth valve E66 at the same time, and the outlet is connected with the steam extraction pipe E61 through the fifth valve B63; the inlet of the steam extraction pipe E61 is respectively connected with the fifth valve B63. Valve B63 is connected to No. 5 valve D65, the outlet is connected to No. 4 valve C54 and No. 5 valve A62 respectively through No. 5 valve F67, and No. 4 valve C54 enters the steam inlet pipe of autoclave D5, and No. 5 valve A62 enters the spent steam Distribution tube 14.

[0026] The exhaust steam distribution pipe 14 is also provided with a plurality of steam traps 15 .

[0027] The exhausted steam distribution pipe 14 is connected to the steam inlet pipe of the autoclave E6 through the fifth valve G68 and the fifth valve C64 respectively.

[0028] The present invention is simple, compact, reasonable and easy to operate; because the main steam source header is connected to the steam source distribution pipe 13 through the main steam source valve A11 and the main steam source valve B12 at the same time; the autoclave A2 and the autoclave B3 , The inlets of the autoclave C4, the autoclave D5 and the autoclave E6 are respectively connected with the steam source distribution pipe 13 and the spent steam distribution pipe 14, and the outlets are respectively connected with the steam extraction pipe A21, the steam extraction pipe B31, the steam extraction pipe The steam extraction pipe C41, the steam extraction pipe D51 and the steam extraction pipe E61 are connected; by arranging several autoclaves side by side, all the exhausted steam from the autoclave is sucked into the steam extraction pipe twice, and the high-pressure exhausted steam is completely sucked into the steam extraction pipe. The steam passes through the steam extraction pipe (without opening high-pressure steam) and directly enters the next kettle for preheating in the high-pressure stage by natural depressurization; the remaining spent steam after natural depressurization passes through the steam extraction pipe (opens high-pressure steam) to heat up After boosting, it is fed into the spent steam distribution pipe, and then the spent steam is introduced into the back pressure kettle that needs to be preheated in turn for preheating. It is recycled without discharge, which solves the problem of incomplete recovery and utilization of spent steam, and improves the quality of spent steam energy. It can be reused most effectively while avoiding environmental pollution, and it is suitable for a wide range of exhausted steam, especially for installation systems with large exhausted steam. It solves the defects of limited recovery and utilization of spent steam, and achieves the purpose of recycling and reuse. Save energy and reduce the total cost of production. It is suitable for the transformation of various types of autoclave exhaust steam recovery devices, and its environmental and economic effects are remarkable. It has the advantages of wide application range, good promotion prospect and long service life, etc. It is especially suitable for wide application in the field of new construction and reconstruction technology of large-scale phosphogypsum brick autoclave system.