Purification recovery method of Fischer-Tropsch synthesis water

A technology of Fischer-Tropsch synthesis and recovery method, which is applied in the field of purification and recovery of Fischer-Tropsch synthetic water, and can solve the problems of difficult industrial amplification, content fluctuation, and complicated process.

A technology of Fischer-Tropsch synthesis and recovery method, which is applied in the field of purification and recovery of Fischer-Tropsch synthetic water, and can solve the problems of difficult industrial amplification, content fluctuation, and complicated process.

CN103435211AActive Publication Date: 2013-12-11SYNFUELS CHINA TECH CO LTD
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  • Purification recovery method of Fischer-Tropsch synthesis water
  • Purification recovery method of Fischer-Tropsch synthesis water
  • Purification recovery method of Fischer-Tropsch synthesis water

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Embodiment Construction

[0054] The experimental methods used in the following examples are conventional methods unless otherwise specified.

[0055] The materials and reagents used in the following examples can be obtained from commercial sources unless otherwise specified.

[0056] according to figure 1 The shown flow process purifies and recovers Fischer-Tropsch synthetic water, and adds 150 kg / h calcium hydroxide to 30,000 kg / h Fischer-Tropsch synthetic water 1 with a pH value of 3.10 to obtain 30,150 kg / h containing oxygen-containing organic matter and a pH value of 7.37. Fischer-Tropsch synthetic water 4 of calcium carboxylate, and solid-liquid separation of Fischer-Tropsch synthetic water 4 by means of filtration to remove solid impurities brought in by the above process. The composition of the Fischer-Tropsch synthetic water 1 is shown in Table 1, and the content of oxygen-containing organic matter in the Fischer-Tropsch synthetic water 1 is 3.3832%.

[0057] The Fischer-Tropsch synthetic wa...

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Abstract

The invention discloses a purification recovery method of Fischer-Tropsch synthesis water, which comprises the following steps: (1) adding inorganic alkali into Fischer-Tropsch synthesis water to carry out acid-alkali neutralization reaction, thereby obtaining Fischer-Tropsch synthesis water containing oxygenated organic substance and carboxylate; (2) delivering the Fischer-Tropsch synthesis water containing oxygenated organic substance and carboxylate into a rectification tower to carry out rectification, and separating to obtain non-acid oxygenated organic substance and Fischer-Tropsch synthesis water containing carboxylate; (3) removing carboxylate in the Fischer-Tropsch synthesis water containing carboxylate to obtain desalted Fischer-Tropsch synthesis water; and (4) carrying out oxygenolysis on the oxygenated organic substance in the desalted Fischer-Tropsch synthesis water to obtain the recoverable Fischer-Tropsch synthesis water. The method can maximally recover the oxygenated organic substance, such as non-acid oxygenated organic substance, in the Fischer-Tropsch synthesis water on the premise of achieving the goal of purifying and recovering Fischer-Tropsch synthesis water; and the purification can be performed according to the fine chemical engineering purity requirement.

Description

technical field [0001] The invention relates to a method for purifying and recovering Fischer-Tropsch synthetic water. Background technique [0002] Fischer-Tropsch synthesis is the conversion of synthesis gas (carbon monoxide and hydrogen) derived from natural gas, coal, etc., into normal hydrocarbons (alkanes and α-olefins) with chain lengths from C1 to C100 or more, a small amount of isomeric hydrocarbons and low carbon number containing The reaction process of oxygen organic compounds (acids, alcohols, aldehydes, ketones and esters) and water, and this reaction process is accompanied by a strong exotherm. [0003] The detailed stoichiometric relationship of the Fischer-Tropsch synthesis reaction can be expressed as: [0004] Alkanes nCO+(2n+1)H 2 =C n h 2n + 2 +nH 2 O (1-1) [0005] Alkenes nCO+2nH 2 =C n h 2n +nH 2 O (1-2) [0006] Acid nCO+(2n-2)H 2 =C n h 2n o 2 +(n-2)H 2 O (1-3) [0007] Alcohol nCO+2nH 2 =C n h 2n + 2 O+(n-1)H 2 O (1-4) [00...

Claims

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Application Information

Patent Timeline
11 Dec 2013
Publication
CN103435211A
IPC
C02F9/10; C02F9/14; C02F1/66; C02F1/04; C02F1/72; C02F1/42; C02F1/469; C02F1/44
Inventors
李永旺; 郝栩