Bamboo pulping method
A bamboo and production method technology, applied in the field of pulp and paper making, can solve problems such as difficult implementation and high equipment requirements, and achieve the effects of improving production efficiency, improving cooking efficiency, and increasing yield
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Embodiment 1
[0016] The bamboo is cut with a drum chipper, broken and cut to make bamboo chips; the bamboo chips obtained in the previous step are accumulated and stored for 3 months; 3 In a vertical cooking pot, add 28m 3 Cooking liquid, the degree of sulfide in the cooking liquid is 22%, and the alkali content in terms of NaOH is 2500kg. After the pot is installed, it is cooked. The heating process of cooking is as follows: the initial temperature is raised to 130°C for 30 minutes, and the temperature is 125°C after a small steam release. 3. It takes 35 minutes to raise the temperature to 165°C, and it takes 50 minutes to continue to heat up to 175°C, and it takes 30 minutes to keep warm at 175°C. , after depressurization, it is sprayed and discharged, and the temperature is raised by directly passing steam into the cooking pot to raise the temperature. The steam discharged during the depressurization and exhaust process enters another digester for heating at the initial stage of cooking...
Embodiment 2
[0019] The bamboo is cut with a drum chipper, broken and cut to make bamboo chips; the bamboo chips obtained in the previous step are accumulated and stored for 2 months; 3 In a vertical cooking pot, add 28m 3 Cooking liquid, the degree of sulfidation in the cooking liquid is 24%, and the alkali content in terms of NaOH is 2900kg. After the pot is installed, the cooking is carried out. The heating process of cooking is as follows: the initial temperature is raised to 135°C for 35 minutes, and the temperature is 130°C after a small release of steam. 1. It takes 25 minutes to raise the temperature to 160°C, continue to heat up to 173°C, and take 40 minutes to keep warm at 175°C for 25 minutes. Minutes, spray after depressurization, heat up by directly passing steam into the cooking pot, and the steam discharged during the depressurization and exhaust process enters another digester, which is used for heating up in the initial stage of cooking.
[0020] After cooking, the coarse...
Embodiment 3
[0022] The bamboo is cut with a drum chipper, broken and cut to make bamboo chips; the bamboo chips obtained in the previous step are accumulated and stored for 75 days; 3 In a vertical cooking pot, add 28m 3 Cooking liquid, the degree of sulfidation in the cooking liquid is 23%, and the alkali content in terms of NaOH is 2900kg. After the pot is installed, it is cooked. The heating process of cooking is as follows: the initial temperature rises to 140°C for 40 minutes, and the temperature after a small release of steam is 135°C 1. Raise the temperature to 163°C for 30 minutes, continue to heat up to 170°C for 45 minutes, and keep warm at 170°C for 20 minutes. Minutes, spray after depressurization, and heat up by directly passing steam into the cooking pot to raise the temperature. The steam discharged during the depressurization and exhaust process enters the condenser, and is discharged after heat exchange and condensation. The hot water obtained by heat exchange is used for...
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Abstract
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