Catalyst loading method and system, pulverized coal adding method and coal catalytic gasification system
A loading system and catalyst technology, applied in chemical instruments and methods, granular/powder fuel gasification, physical/chemical process catalysts, etc., can solve problems such as poor catalytic effect of industrial concentrated brine, improve catalytic effect and ensure catalytic effect. effect, effect of stabilizing catalytic effect
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Embodiment 1
[0075] Take the industrial brine discharged from the circulating water system, first pass the industrial brine through the reverse osmosis membrane to separate the NaCl-rich solution and the Na-rich solution. 2 SO 4 solution.
[0076] The NaCl-rich solution is concentrated, and the concentrated 40% NaCl salt solution is crystallized, and the mass percentage of the NaCl crystalline salt after crystallization accounts for 96% of the total crystalline salt. Will be rich Na 2 SO 4 The solution was concentrated to 30% Na after concentration 2 SO 4 The salt solution is crystallized, and Na after crystallization 2 SO 4 The mass percentage of crystalline salt accounts for 95% of the total crystalline salt.
[0077] The mass ratio of the NaCl salt solution input into the solid-liquid mixer to the total concentrated NaCl salt solution is 30%, and the Na 2 SO 4 The salt solution accounts for the total Na after concentration 2 SO 4 The mass ratio of the salt solution is 30%.
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Embodiment 2
[0081] The differences from Example 1 include:
[0082] NaCl crystal salt and Na 2 SO 4The crystalline salt is melted at a high temperature of 650 ℃ in a high-temperature furnace at a mass ratio of 50:50, and then the molten salt is crushed by a crusher into particles with a particle size of ≤5mm, and 2-5mm accounts for 8%. The 8% mass ratio is mixed with dry powder in the powder mixer, and the coal sample mixed by the powder mixer and the coal sample dried by the dryer are mixed and added to the gasifier together. The coal gasification with concentrated brine was carried out in the gasifier, and the carbon conversion rate and methane yield after gasification are shown in Table 1.
Embodiment 3
[0084] The differences from Example 1 include:
[0085] Will be rich Na 2 SO 4 The solution was concentrated to 40% Na after concentration 2 SO 4 The solution was crystallized, and Na after crystallization 2 SO 4 The mass percentage of crystalline salt accounts for 95% of the total crystalline salt.
[0086] The mass ratio of the NaCl salt solution input to the solid-liquid mixer to the total concentrated NaCl salt solution is 60%, and the Na 2 SO 4 The salt solution accounts for the total Na after concentration 2 SO 4 The mass ratio of the salt solution is 60%.
[0087] Take pulverized coal with a particle size of ≤5mm, 2-5mm accounting for 8%, and moisture content of 25%. 2 Concentrated high-concentration NaCl salt solution and Na 2 SO 4 Salt solution, of which, NaCl salt solution and Na 2 SO 4 Pure NaCl and pure Na in salt solution 2 SO 4 The mass ratio of coal samples was 30:70, and then dried in a dryer, and the moisture content of the coal samples after d...
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